CN100469063C - GMPLS+IP/MPLS node and IP/MPLS node - Google Patents

Abstract

A network is realized having GMPLS and IP/MPLS mixed, in which an IP/MPLS node can be operated as is without replacing the IP/MPLS node with a node having a GMPLS function, even if the GMPLS and IP/MPLS are mixed. To match with the protocol of the IP/MPLS node outside of a GMPLS cloud, the GMPLS+IP/MPLS node (edge) establishes a PSC-LSP between GMPLS+IP/MPLS nodes (edge), uses the PSC-LSP as an IP/MPLS link from the viewpoint of the IP/MPLS node, and operates signaling of an MPLS-LSP establishment requested from the IP/MPLS.

Description

GMPLS+IP/MPLS node and IP/MPLS node

Technical field

The present invention relates to use the internetwork connected mode of multi-form exchanged form.In other words, the present invention relates to internetwork connected mode with diverse ways management. be particularly related to the mixed network of depositing of GMPLS (exchange of general multiple protocols label) network and IP/MPLS (Internet Protocol/multiprotocol label switching) network.

The application is willing to that to the spy of submission on March 26th, 2003 spy who submits in 2003-85423 number application, on August 20th, 2003 is willing to that the spy who submits in 2003-296440 number application and on March 1st, 2004 is willing to apply for for 2004-56129 number advocating priority, here, quoted their content.

Background technology

Below show the document guide look of this specification institute reference.

Non-patent literature 1:E.Rosen, A.Viswanathan, and R.Callon, " Multiprotocol Label Switching Architecture, " RFC 3031.

Non-patent literature 2:J.Moy, " OSPF Version 2, " RFC 2328.

Non-patent literature 3:R.Coltun, " The OSPF Opaque LSA Option, " RFC2370.

Non-patent literature 4:K.Kompella and Y.Rekhter, " OSPF Extension inSupport of Generalized MPLS, " IETF draft, draft-ietf-ccamp-ospf-gmpls-extensions-09.txt, Dec.2002.

Non-patent literature 5:P.Ashwood-Smith et al, " Generalized MPLSSignaling-RSVP-TEExtensions, " IETF draft, draft-ietf-mpls-generalized-rsvp-te-09.txt, Aug.2002.

Non-patent literature 6:D.Awduche et al., " RSVP-TE:Extensions to RSVPfor LSP Tunnels, " RFC 3209, December 2001.

Non-patent literature 7:A.Baner jee et al, " Generalized MultiprotocolLabel Switching:An Overview of Routing and ManagementEnhancements; " IEEE Commun.Mag., pp.144-150, Jan.2001.

Non-patent literature 8:D.Katz et al., " Traffic Engineering Extensionsto OSPF Version 2, " IETF draft, draft-katz-yeung-ospf-traffic-10.txt, June.2003.

Figure 21 illustrates the network that is made of existing IP/MPLS node. and in the network in IP/MPLS, the exchange capacity of node interface all is PSC (energy packet switching).The MPLS structure be for support based on the data of label transmit and definition (for example, with reference to non-patent literature 1). in RFC3031, LSR (LSR) be meant have the data transmission plane that can discern IP grouping or border, sub-district (the IP grouping of tape label) and with the corresponding node that carries out data transfer process of the content of IP packet header or sub-district title. in GMPLS, LSR is not only that LSR among the corresponding node .GMPLS that carries out data transfer process with the content of IP packet header or sub-district title also comprises with time slot, wavelength, the information of the physical port of optical fiber transmits the equipment of processing for the basis.

On the other hand, the interface of LSR among the GMPLS is divided into PSC (energy packet switching), TDM (energy time-division multiplex), LSC (energy λ exchange), FSC (energy optical fiber exchanges) 4 classes with each exchange capacity. and in addition, Figure 22 A～Figure 22 D illustrates the notion of the label among the GMPLS.

(explanation of PSC)

The interface of PCS can be discerned the border of IP grouping or sub-district, the corresponding data transfer process of carrying out with the content of IP packet header or sub-district title. in Figure 22 A, to the uniquely defined label of each link, label is given in grouping to IP, forms LSP (label switched path) in the packet layer definition.The link of Figure 22 A is the link that defines between LSR in order to transmit the IP grouping.When on SDH/SONET, transmitting the IP grouping, be the SDH/SONET path, when when Ethernet (login trade mark) is gone up transmission, be the Ethernet path.

(explanation of TDM)

The interface of TDM carries out data transfer process according to the time slot of cycle repetition in time.In Figure 22 B, at the TDM layer, label becomes time slot. and as the example of TDM interface, be the interface of DXC (data cross connection), the time slot of distributing to input side is coupled together with the time slot of distributing to outlet side, form the TDM path, be the SDH/SONET path.Link has the situation of wavelength path, and also having only is the situation of optical fiber.

(explanation of LSC)

The interface of LSC carries out data transfer process according to the wavelength in the optical fiber that transmits data.In Figure 22 C, at the λ layer, label becomes wavelength. and as the example of LSC interface, be the interface of OXC (optical cross connect), the wavelength of distributing to input side being coupled together with the wavelength of distributing to outlet side, form the λ path. the interface with OXC of LSC exchanges with wavelength unit.

(explanation of FSC)

The corresponding data transfer process of carrying out in position of the interface of FSC and the actual physics port of the optical fiber that transmits data. at Figure 22 D, at optical fiber layer, label becomes optical fiber. as the example of FSC interface, it is the interface of OXC, the optical fiber of input side and the optical fiber of outlet side being coupled together, form fiber path. the interface with OXC of FSC exchanges with optical fiber unit.Link means the physical set of optical fiber, and cable duct (コ Application デ ユ Star ト) etc. is arranged.

The interface of above-mentioned exchange capacity can layering uses. from upper layer beginning be successively FSC, LSC, TDM and PSC. among GMPLS, will be called LSP to the path of above-mentioned each exchange capacity.The hierarchy .PSC-LSP that Figure 23 illustrates LSP belongs to TDM-LSP, and the link of PSC-LSP becomes TDM-LSP.TDM-LSP and belongs to LSC-LSP, and the link of TDM-LSP becomes LSC-LSP, and LSC-LSP becomes FSC-LSP, and the link of LSC-LSP becomes FSC-LSP.In addition, when considering to omit the situation of TDM layer, PSC-LSP belongs to LSC-LSP, and the link of PSC-LSP becomes LSC-LSP.The relation of LSC-LSP and FSC-LSP is the same with the situation of Figure 22 B.Past more lower layer, the bandwidth of LSP is wide more.

In such prior art, for example, as shown in figure 24, when the GMPLS node 2,3,4,5,6 of the exchange capacity of exchange capacity with PSC and LSC and the function IP/ MPLS node 1,7 that only has a PSC mix when depositing, IP/MPLS node and GMPLS agreement do not match.Therefore,, mate, as shown in figure 25, in the prior art, all nodes must be replaced to GMPLS node by the work of GMPLS agreement in order to make itself and GMPLS agreement for the function IP/MPLS node that only has PSC.Therefore, for the importing of GMPLS node, the importing expense is increased.

In GMPLS, Routing Protocol and signaling protocol that the GMPLS after the IP/MPLS expansion is used are arranged.The Routing Protocol of using for GMPLS, in GMPLS, the LSP of all layers is regarded as the link of upper layer, the advertisement Link State. therefore, node in the GMPLS network keeps the state of all links, and having a topological structure of each layer. the database of this topological structure is that communication engineering is done, and is called GMPLSTED (communication engineering database). each node keeps GMPLSTED.

In signaling protocol, the signaling protocol that has GMPLS to use, all GMPLS nodes must connect the signaling protocol work that GMPLS uses. and Figure 26 A and Figure 26 B are illustrated in the situation that is set with LSC-LSP on the PSC-LSP layer. between node 2 and node 4, set LSC-LSP.Between node 4 and node 5, set LSC-LSP.Between node 21 and node 27,, set PSC-LSP through 2 LSC-LSP.

Figure 27 illustrates the formation of existing GMPLS node.Existing GMPLS node comprises as shown in figure 27: the GMPLSTED portion 14 of the GMPLS Route Selection portion 11 of the route of the GMPLS signaling portion 10 of the signaling of control GMPLS, control GMPLS, the link-state information of storage GMPLS network, the control part controller 20 of control that carries out each one and the exchange portion 19. that carries out packet switching

Summary of the invention

The present invention proposes under such background, its purpose is to provide a kind of GMPLS and IP/MPLS to mix the network of depositing, even mix under the situation of depositing at GMPLS node and IP/MPLS node, the IP/MPLS node need not be replaced as the GMPLS node, the IP/MPLS node can on-line operation.

In the present invention, node that will be not all is replaced as the GMPLS node.The node that is originally the IP/MPLS node can be used as the IP/MPLS node and directly uses.

Constitute the GMPLS group who only forms by node with GMPLS function, to utilize physical link to be called fringe node with node in the GMPLS group that the IP/MPLS node is connected, as fringe node, configuration can handle GMPLS agreement and IP/MPLS agreement the GMPLS+IP/MPLS node (below, note is made GMPLS+IP/MPLS node (edge)). in addition, the node except that GMPLS+IP/MPLS node (edge) in the node with GMPLS function in the GMPLS group is called core node, as core node, dispose the some of GMPLS+IP/MPLS node or GMPLS node.Have again, will make GMPLS+IP/MPLS node (core), in addition, will make GMPLS node (core) as the GMPLS node note of core node as the GMPLS+IP/MPLS node note of core node.

Function below GMPLS+IP/MPLS node (edge) is supported is mated the agreement of the outer IP/MPLS node of itself and GMPLS group. between GMPLS+IP/MPLS node (edge), set PSC-LSP.PSC-LSP can be used as the IP/MPLS link and uses from the viewpoint of IP/MPLS node. make the signaling action of setting from the MPLS-LSP of IP/MPLS requirement.GMPLS+IP/MPLS node (edge) has GMPLSTED and IP/MPLSTED.The IP/MPLS node has IP/MP_LSTED.GMPLS+IP/MPLS node (core) or GMPLS node (core) has GMPLSTED.

Therefore, even the IP/MPLS node can not be by GMPLS agreement work, but, can equally with the network that has only IP/MPLS work mixing in the network of depositing with GMPLS.

Promptly, the 1st aspect of the present invention is the CMPLS+IP/MPLS node, GMPLS network and IP network are mixed and are deposited, above-mentioned GMPLS network is made of the node with GMPLS function, the above-mentioned IP network is applicable to the network that is made of the IP/MPLS node, above-mentioned GMPLS network be can constitute, and GMPLS agreement and IP/MPLS agreement handled.

Here, the present invention have and above-mentioned GMPLS network in other GMPLS+IP/MPLS nodes between set packet layer the GMPLS tag path device and and other GMPLS+IP/MPLS nodes between to utilizing this GMPLS tag path to carry out the device that the tunnel transmits from the grouping that above-mentioned IP/the MPLS node sends.

Therefore, if from the IP/MPLS node, the GMPLS tag path of the packet layer of setting in the GMPLS network can be regarded the tag path in the IP/MPLS network as.Therefore, can constitute IP/MPLS and GMPLS and mix the network of depositing.

Can have GMPLS tag path with above-mentioned packet layer as the common link in the IP/MPLS node and utilize the device of router lsa (label exchange advertisement) with the advertisement on the IP/MPLS node of this link-state information.

Therefore, the link-state information of the GMPLS tag path of the packet layer in the GMPLS network is become the receptible form of IP/MPLS node and carry out advertisement again.

Can have maintenance with the GMPLS tag path of above-mentioned packet layer as the link advertisement link-state information device and keep the device of the link-state information of above-mentioned GMPLS network internal.

Therefore, can keep both sides' link-state information of GMPLS network and IP/MPLS network and mate with both sides' network.

Can have PSC-LSP (but packet switching-label switched path) link that IP/MPLS is used and non-number mode conversion be become the device that is re-used as the link advertisement of number mode after the number mode.Perhaps, can have the device that the GMPLS tag path of above-mentioned packet layer is carried out advertisement as the link of number mode.

Therefore, can be with the acceptable form of IP/MPLS node, the link-state information of the GMPLS tag path of the packet layer in the GMPLS network is carried out advertisement.

In above-mentioned GMPLS network, the PSC-LSP link that can have the device handled with non-number mode and IP/MPLS is used becomes non-number mode conversion in the device that is re-used as the link advertisement of number mode after the number mode. perhaps, in above-mentioned GMPLS network, the device that the GMPLS label switched path that can have the device handled with non-number mode and an above-mentioned packet layer becomes the link that is re-used as the number mode after the number mode to carry out advertisement non-number mode conversion.

Therefore, can utilize GMPLS network and IP/MPLS network to carry out suitable processing respectively.

In such number mode, can have the device of storing IP address in advance and the device that this stored IP address is used as the IP address of the link of above-mentioned number mode.

Also can have the LSA converting means that the OpaqueLSA of tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa, above-mentioned LSA converting means is when above-mentioned tag path is the point-to-point Linktype of number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

Therefore, can make the router lsa of GMPLS tag path to the effect of the MPLS web advertisement.

Also can have the LSA converting means that the OpaqueLSA of tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa, above-mentioned LSA converting means is when above-mentioned tag path is the point-to-point Linktype of non-number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the link local identifier field among the OpaqueLSA is copied in the link data field of router lsa of expression ifIndex value.

Therefore, can make the router lsa of GMPLS tag path to the effect of the MPLS web advertisement.

Also can have the LSA converting means that the OpaqueLSA of tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa, above-mentioned LSA converting means is when above-mentioned tag path is the Linktype of multiple access, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

Therefore, can make the router lsa of GMPLS tag path to the effect of the MPLS web advertisement.

Also can have router lsa that the GMPLS+IP/MPLS node that receives other makes discern again this router lsa be the above-mentioned GMPLS network of advertisement C-plane LSA or will represent the GMPLS tag path the OpaqueLSA conversion the LSA recognition device of LSA and the Link State holding device of the link-state information of the above-mentioned GMPLS network of maintenance, above-mentioned LSA recognition device will be included in the value of the advertising router in the router lsa that has received and the value of LS sequence number is retrieved the above-mentioned Link State holding device of this node as keyword, when the link-state information of same advertising router of the router lsa that has He received and LS sequence number is in above-mentioned Link State holding device, be judged as the router lsa that has received and be the OpaqueLSA conversion that will represent the GMPLS tag path LSA.

Therefore, can be identified in the LSA that generates after the LSA of C-plane that the router lsa of advertisement on the network is an expression GMPLS network or the OpaqueLSA conversion with the tag path of expression D-plane.Thereby the GMPLS node can be differentiated should be used for the generation of C-plane topology for which router lsa, which router lsa is used for the D-plane topology generates.

Also can have the LSA converting means that the OpaqueLSA of tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa, above-mentioned LSA converting means is when above-mentioned tag path is the point-to-point Linktype of number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

Therefore, can make the router lsa of GMPLS tag path to the effect of the MPLS web advertisement.

Also can have the LSA converting means that the OpaqueLSA of tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa, above-mentioned LSA converting means is when above-mentioned tag path is the point-to-point Linktype of non-number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the link local identifier field among the OpaqueLSA is copied in the link data field of router lsa of expression ifIndex value.

Therefore, can make the router lsa of GMPLS tag path to the effect of the MPLS web advertisement.

Also can have the LSA converting means that the OpaqueLSA of tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa, above-mentioned LSA converting means is when above-mentioned tag path is the Linktype of multiple access, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of above-mentioned GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

Therefore, can make the router lsa of GMPLS tag path to the effect of the MPLS web advertisement.

Also can have router lsa that the GMPLS+IP/MPLS node that receives other makes discern again this router lsa be the above-mentioned GMPLS network of advertisement C-plane LSA or will represent the GMPLS tag path the OpaqueLSA conversion the LSA recognition device of LSA and the Link State holding device of the link-state information of the above-mentioned GMPLS network of maintenance, above-mentioned LSA recognition device will be included in the value and the tag path shift sign of the advertising router in the router lsa that has received and as keyword the Link State holding device of this node be retrieved, when the value of advertising router identical with the router lsa that has received, link-state information when the label transform path is labeled as ON is in above-mentioned Link State holding device the time, be judged as the router lsa that has received and be the OpaqueLSA conversion that will represent the GMPLS tag path LSA.

Therefore, thereby can be identified in the router lsa of advertisement on the network and be the LSA. that generates after the LSA of C-plane of expression GMPLS network or the OpaqueLSA conversion with the tag path of expression D-plane, the GMPLS node can be differentiated should be used for the generation of C-plane topology for which router lsa, which router lsa is used for the D-plane topology generates.

The IP/MPLS node that also can have topology at the C-plane that utilizes the above-mentioned GMP_LS network of router lsa advertisement, has received this router lsa identifies the topology of the C-plane of above-mentioned GMPLS network, and the IP/MPLS node with information relevant with this topology has been exported under the situation of the requirement of setting the MPLS tag path after the C-plane that specifies above-mentioned GMPLS network, during the GMPLS tag path of the node unanimity of the both link ends of the C-plane on having the path that requires appointment by this, this GMPLS tag path is distributed the device in the path of appointment.

Also can have topology at the C-plane that utilizes the above-mentioned GMPLS network of router lsa advertisement, the IP/MPLS node that has received this router lsa identifies the topology of the C-plane of above-mentioned GMPLS network, and the IP/MPLS node with information relevant with this topology has been exported under the situation of the requirement of setting the MPLS tag path after the C-plane that specifies above-mentioned GMPLS network, during the GMPLS tag path of the node unanimity of the both link ends of the C-plane on not having the path that requires appointment by this, the MPLS tag path of this IP/MPLS node output is set requirement as triggering, the D-plane corresponding with the node of the both link ends of C-plane newly is provided with tag path, and this newly-installed tag path distributed the device in the path of appointment.

Therefore, when the MPLS node is specified the C-plane of GMPLS network as the path, even there be not the tag path corresponding, also suitable tag path can be set newly automatically, and use this new tag path to go to set the path of MPLS with this link.

Also can have under the situation of having distributed by the GMPLS tag path of the node unanimity of the both link ends of the C-plane of the above-mentioned GMPLS network of above-mentioned IP/MPLS node appointment, when this node is directly when above-mentioned IP/MPLS node receives the GMPLS+IP/MPLS node that requires, make from data that above-mentioned IP/the MPLS node sends not at the device that transmits at the above-mentioned GMPLS tag path that has distributed by the path of IP/MPLS node appointment.

By GMPLS node that the invention relevant with above-mentioned Routing Protocol packed into, GMPLS network and IP/MPLS network are interconnected.

The 2nd aspect of the present invention is the IP/MPLS node, and GMPLS network and IP network are mixed and deposited, and above-mentioned GMPLS network is made of the node with GMPLS function, and the above-mentioned IP network is applicable to the network that is made of the IP/MPLS node, can be connected with above-mentioned GMPLS network.

Here, the present invention constitutes above-mentioned GMPLS network, the GMPLS+IP/MPLS node that can handle GMPLS agreement and IP/MPLS agreement have and above-mentioned GMPLS network in other GMPLS+IP/MPLS nodes between set the GMPLS tag path of packet layer, have the link-state information of advertisement has been carried out the GMPLS tag path of this packet layer in maintenance as link device.

The 3rd aspect of the present invention is to mix the network of depositing by GMPLS and IP/MPLS that GMPLS+IP/MPLS node of the present invention and IP/MPLS node constitute.

The 4th aspect of the present invention is a block communication method, GMPLS network and IP network are mixed and are deposited, above-mentioned GMPLS network is made of the node with GMPLS function, the above-mentioned IP network is the network that is made of the IP/MPLS node, above-mentioned IP/MPLS node and have a grouping of receiving and sending messages between the node of above-mentioned GMPLS function.

Here, the present invention carries out following step: in the node with above-mentioned GMPLS function that constitutes above-mentioned GMPLS network, the step that directly is connected and can handles the GMPLS+IP/MPLS node of GMPLS agreement and IP/MPLS agreement with the above-mentioned IP network is set; Above-mentioned GMPLS+IP/MPLS node and above-mentioned GMPLS network in other GMPLS+IP/MPLS nodes between set the step of the GMPLS tag path of packet layer; And other GMPLS+IP/MPLS nodes between, carry out the step that the tunnel transmits to utilizing this GMPLS tag path from the grouping that above-mentioned IP/the MPLS node sends.

Can be with the GMPLS tag path of above-mentioned packet layer as the common link in the IP/MPLS node and utilize router lsa with the advertisement on the IP/MPLS node of this link-state information.

Can utilize OpaqueLSA that the MPLS router can handle this link-state information with the GMPLS tag path of above-mentioned packet layer as the common link advertisement on the IP/MPLS node in the IP/MPLS node.

Can keep the GMPLS tag path of this packet layer is carried out the link-state information of advertisement as link, and keep the link-state information of above-mentioned GMPLS network internal.

The PSC-LSP link that IP/MPLS can be used becomes the number mode from non-number mode conversion, and the link that is re-used as the number mode carries out advertisement.

In above-mentioned GMPLS network, can handle with non-number mode, and, become the number mode from non-number mode conversion with the PSC-LSP link that IP/MPLS uses, the link that is re-used as the number mode carries out advertisement.

The GMPLS label switched path of above-mentioned packet layer can be carried out advertisement as the link of number mode.

In above-mentioned GMPLS network, can handle with non-number mode, and the GMPLS label switched path of above-mentioned packet layer is become the number mode from non-number mode conversion, the link that is re-used as the number mode carries out advertisement.

Storing IP address in advance, and this stored IP address used as the IP address of the link of above-mentioned number mode.

Also can be transformed into router lsa for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network, when above-mentioned tag path is the point-to-point Linktype of number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

Also can be transformed into router lsa for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network, when above-mentioned tag path is the point-to-point Linktype of non-number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the link local identifier field among the OpaqueLSA is copied in the link data field of router lsa of expression ifIndex value.

Also can be transformed into router lsa for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network, when above-mentioned tag path is the Linktype of multiple access, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

Also can receive the router lsa that other GMPLS+IP/MPLS node is made, for discern this router lsa be the above-mentioned GMPLS network of advertisement C-plane LSA or will represent the GMPLS tag path the OpaqueLSA conversion LSA, to be included in the value of the value of the advertising router in the router lsa that has received and LS sequence number as keyword, Link State holding device to this GMPLS+IP/MPLS node of the link-state information that keeps above-mentioned GMPLS network is retrieved, when the link-state information of same advertising router of the router lsa that has He received and LS sequence number is in above-mentioned Link State holding device, be judged as the router lsa that has received and be the OpaqueLSA conversion that will represent the GMPLS tag path LSA.

Also can be transformed into router lsa for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network, when above-mentioned tag path is the point-to-point Linktype of number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of above-mentioned GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

Also can be transformed into router lsa for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network, when above-mentioned tag path is the point-to-point Linktype of non-number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the link local identifier field among the OpaqueLSA is copied in the link data field of router lsa of expression ifIndex value.

Also can be transformed into router lsa for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network, when above-mentioned tag path is the Linktype of multiple access, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of above-mentioned GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

Also can receive the router lsa that other GMPLS+IP/MPLS node is made, for discern this router lsa be the above-mentioned GMPLS network of advertisement C-plane LSA or will represent the GMPLS tag path the OpaqueLSA conversion LSA, can will be included in the value of the advertising router in the router lsa that has received and tag path shift sign as keyword, Link State holding device to this GMPLS+IP/MPLS node of the link-state information that keeps above-mentioned GMPLS network is retrieved, when the value of advertising router identical with the router lsa that has received, link-state information when the tag path shift sign is ON is in above-mentioned Link State holding device the time, be judged as the router lsa that has received and be the OpaqueLSA conversion that will represent the GMPLS tag path LSA

The topology of also can above-mentioned GMPLS+IP/MPLS node utilizing the C-plane of the above-mentioned GMPLS network of router lsa advertisement, the IP/MPLS node that has received this router lsa identifies the topology of the C-plane of above-mentioned GMPLS network, IP/MPLS node with information relevant with this topology has been exported the requirement of setting the MPLS tag path after the C-plane that specifies above-mentioned GMPLS network, during the GMPLS tag path of the node unanimity of the both link ends of the C-plane on having the path that is required appointment by this, above-mentioned GMPLS+IP/MPLS node distributes the path of appointment to this GMPLS tag path.

The topology of also can above-mentioned GMPLS+IP/MPLS node utilizing the C-plane of the above-mentioned GMPLS network of router lsa advertisement, the IP/MPLS node that has received this router lsa identifies the topology of the C-plane of above-mentioned GMPLS network, IP/MPLS node with information relevant with this topology has been exported the requirement of setting the MPLS tag path after the C-plane that specifies above-mentioned GMPLS network, during the GMPLS tag path of the node unanimity of the both link ends of the C-plane on not having the path that requires appointment by this, above-mentioned GMPLS+IP/MPLS node is set the MPLS tag path of this IP/MPLS node output and is required as triggering, the D-plane corresponding with the node of the both link ends of C-plane newly is provided with tag path, and this newly-installed tag path distributed the path of appointment.

Also can be, under the situation of having distributed, directly receive the GMPLS+IP/MPLS node that requires and make from the data that above-mentioned IP/the MPLS node sends and do not transmitting at the above-mentioned GMPLS tag path that has distributed by the path of IP/MPLS node appointment from above-mentioned IP/MPLS node by the GMPLS tag path of the node unanimity of the both link ends of the C-plane of the above-mentioned GMPLS network of above-mentioned IP/MPLS node appointment.

The IP/MPLS node can keep the GMPLS tag path of above-mentioned packet layer is carried out as link the link-state information of advertisement.

The 5th aspect of the present invention is a network constituting method, by GMPLS+IP/MPLS node that uses block communication method transmitting-receiving grouping of the present invention and the IP/MPLS node that uses block communication method transmitting-receiving grouping of the present invention are set, constitute the mixed network of depositing of GMPLS and IP/MPLS.

If according to the present invention, can realize that GMPLS and IP/MPLS mix the network of depositing, even mixing, GMPLS and IP/MPLS deposit, also the IP/MPLS node need not be replaced as node with GMPLS function, the IP/MPLS node can on-line operation.

In addition, if according to the present invention, when the GMPLS network is connected with the IP/MPLS network, by making the Routing Protocol operate as normal, and communicate engineering based on this, can the discrete communication business, the Internet resources of can applying in a flexible way effectively.

Description of drawings

Figure 1A～Fig. 1 C is the concept map that the tunnel of embodiment of the present invention transmits.

Fig. 2 is the flow chart of the packet communication order of expression embodiment of the present invention.

The figure of Fig. 3 network that to be expression be made of the IP/MPLS node and the GMPLS node of embodiment of the present invention.

Fig. 4 is the square frame pie graph of control part of the GMPLS fringe node of embodiment of the present invention.

Fig. 5 is the square frame pie graph of control part of the GMPLS core node of embodiment of the present invention.

Fig. 6 is the square frame pie graph of control part of the IP/MPLS node of embodiment of the present invention.

Fig. 7 A and Fig. 7 B are in the expression GMPLS group and the figure of the number mode outside the GMPLS group.

Fig. 8 A and Fig. 8 B are in the expression GMPLS group and the figure of the number mode outside the GMPLS group.

Fig. 9 be used for illustrating embodiment of the present invention with the figure of IP address to the number link assignment.

Figure 10 is the square frame pie graph of control part of the GMPLS fringe node of embodiment of the present invention.

Figure 11 is the square frame pie graph of control part of the GMPLS fringe node of embodiment of the present invention.

Figure 12 is the figure of the network that is made of IP/MPLS node, GMPLS+IP/MPLS node and GMPLS node of expression.

Figure 13 A～Figure 13 C is the figure that is used for illustrating the setting situation that the LSP of embodiment 4 sets.

Figure 14 is the figure of the management condition of the link-state information in the network of representing to be made of IP/MPLS node, GMPLS+IP/MPLS node and GMPLS node.

Figure 15 is the block diagram of formation of the LSA transformation component that has of GMPLS+IP/MPLS node of expression embodiment 6.

Figure 16 is the table of the parameter corresponding relation of expression OpaqueLSA and router lsa.

Figure 17 is the block diagram of formation of the router lsa identification part that has of GMPLS+IP/MPLS node of expression embodiment 7.

Figure 18 is that expression is used for illustrating the block diagram that the network of embodiment 10 constitutes.

Figure 19 is the figure of the path setting order in the network that is made of the GMPLS+IP/MPLS node of expression embodiment 10.

Figure 20 is the figure of the path setting order in the network that is made of the GMPLS+IP/MPLS node of expression embodiment 11.

Figure 21 is the figure of the network that is made of the IP/MPLS node of expression.

Figure 22 A～Figure 22 D is the figure of the notion of expression label.

Figure 23 is the figure that is used for illustrating the layering of LSP.

Figure 24 is used for illustrating the figure that inserts the situation of GMPLS node in the network that is made of the IP/MPLS node.

Figure 25 is the figure of the existing network that is made of the GMPLS node of expression.

Figure 26 A and Figure 26 B are the figure of the layering of the LSP in the existing network of representing to be made of the GMPLS node.

Figure 27 is the square frame pie graph of the control part of existing GMPLS node.

Embodiment

Constructive method with reference to GMPLS+IP/MPLS node, GMPLS node, IP/MPLS node, network and the network of description of drawings embodiment of the present invention.

In the network of embodiment of the present invention, shown in Figure 1A～Fig. 1 C, use MPLS-LSP (Figure 1A) or PSC-LSP (Figure 1B), IP grouping the carrying out tunnel that sends from the IP/MPLS node is transmitted as the GMPLS tag path of the packet layer of between GMPLS+IP/MPLS node (edge) 2 and GMPLS+IP/MPLS node (edge) 5, setting.In embodiment of the present invention, in order to make explanation understandable, describe, but the direction that transmits both can be two-way, also can be unidirectional, because of the explanation of two-way transmission is analogized according to unidirectional situation easily, so omitted with regard to the situation of one-way transmission.

Link (the step 1) that packet communication order .GMPLS+IP/MPLS node detection in the network of embodiment of the present invention is connected with oneself is described with reference to Fig. 2, when setting the internodal link of IP/MPLS (step 2), recognizing oneself is GMPLS+IP/MPLS node (edge), set again pattern (step 3). then, and the GMPLS network in other GMPLS+IP/MPLS nodes (edge) between set the GMPLS tag path (step 4) of packet layer.When having set the GMPLS tag path of packet layer, will be sent to other GMPLS+IP/MPLS node (edge) (step 5) from the grouping tunnel that the IP/MPLS node sends.

The GMPLS+IP/MPLS node of embodiment of the present invention as shown in Figure 3, be applicable to GMPLS network and IP network mix deposit, above-mentioned GMPLS network by the node with GMPLS function constitute, the above-mentioned IP network is applicable to the network that is made of the IP/MPLS node, can constitute above-mentioned GMPLS network and handle the GMPLS agreement and the IP/MPLS agreement.

Here, embodiment of the present invention is characterised in that: as shown in Figure 4, have and above-mentioned GMPLS network in other GMPLS+IP/MPLS node between set the GMPLS Route Selection portion 11 that carries out the tunnel transmission between the GMPLS signaling portion 10 of GMPLS tag path of packet layer and being grouped in of will sending from above-mentioned IP/MPLS node by this GMPLS tag path and other GMPLS+IP/MPLS nodes.

And then, have GMPLS tag path with above-mentioned packet layer as the common link in the IP/MPLS node, and utilize router lsa the IP/MPLSTED portion 13 of this link-state information to the advertisement of IP/MPLS node.This IP/MPLSTED portion 13 keeps the GMPLS tag path of the above-mentioned packet layer link-state information as the link advertisement.And then, the GMPLSTED portion 14 with the link-state information that keeps above-mentioned GMPLS network internal.

In addition, as shown in figure 10, have be used for PSC-LSP that IP/MPLS is used link with non-number mode conversion become the number mode and as the IP address storage pool 16. of the link advertisement of number mode or, as shown in figure 11, in above-mentioned GMPLS network, handle with non-number mode, have and be used for the link of PSC-LSP that IP/MPLS is used non-number mode conversion is become number mode and can be with the link advertisement as the number mode of the GMPLS label switched path of above-mentioned packet layer as the IP address storage pool 16 of the link advertisement of number mode and number/non-FH-number transform portion 15. these numbers/non-FH-number transform portion 15.

Perhaps, number/non-FH-number transform portion 15 and IP address storage pool 16 are in above-mentioned GMPLS network, also can be used for handling, the GMPLS label switched path of above-mentioned packet layer is become the number mode and as the link advertisement of number mode from non-number mode conversion with non-number mode.

IP address storage pool 16 is the storing IP address in advance, and this stored IP address is used as the IP address of the link of above-mentioned number mode.

In addition, the GMPLS+IP/MPLS node has MPLS signaling portion 17 and IP/MPLS Route Selection portion 18 as the function of IP/MPLS node.

In addition, the IP/MPLS node of present embodiment has the path of node setting has separately been carried out the GMPLS tag path of packet layer in maintenance as the 13. exchange portions 19 of IP/MPLSTED portion of the link-state information of link advertisement exchange as shown in Figure 6.

The feature of the network of embodiment of the present invention is by the GMPLS+IP/MPLS node of embodiment of the present invention and the IP/MPLS node constitutes and GMPLS and IP/MPLS mix and deposit.

Below, further describe embodiment of the present invention.

[embodiment 1]

Use the setting situation .GMPLS+IP/MPLS node (edge) 2 and the GMPLS+IP/MPLS node (edge) 5 of the LSP setting of Figure 1A～Fig. 1 C explanation embodiment 1 to set PSC-LSP.PSC-LSP is because of setting by LSC-LSP, so set LSC-LSP before PSC-LSP sets.GMPLS+IP/MPLS node (edge) is to the outer IP/MPLS node of GMPLS group, as the common link use of IP/MPLS.

Shown in Figure 1A, when to IP/MPLS node 1 and IP/MPLS node 7 setting MPLS-LSP, MPLS-LSP uses PSC-LSP as common link to the IP/MPLS node.The IP grouping is by MPLS-LSP inside.

In addition, shown in Figure 1B, also there is IP/MPLS node 1 IP/MPLS node 7 not to be transmitted the situation of IP grouping by MPLS-LSP. at this moment, to the IP/MPLS node, will use as common link at the PSC-LSP of GMPLS+IP/MPLS node (edge) 2 and GMPLS+IP/MPLS node (edge) 5 settings.

Fig. 3 illustrates GMPLS+IP/MPLS node in the management condition .GMPLS group of the link-state information in the network that is made of GMPLS node, GMPLS+IP/MPLS node and IP/MPLS node or the link-state information of GMPLS node administration GMPLS.For example, in GMPLS, during the advertisement link-state information, use OpaqueLSA (for example with reference to non-patent literature 2,3,4) when the Routing Protocol that uses GMPLS to use.As the PSC-LSP that will between GMPLS+IP/MPLS node (edge), set to the IP/MPLS router as common link processing, with the form advertisement identical with the internodal link of IP/MPLS.For example, when using OSPF (preferential open shortest path) Routing Protocol, use router lsa (for example, with reference to non-patent literature 2).

GMPLS+IP/MPLS node (edge) has GMPLSTED portion 14 and IP/MPLSTED portion 13 as Fig. 4, Figure 10, shown in Figure 11.The IP/MPLS node has IP/MPLSTED portion 13. and as shown in Figure 5, has GMPLSTED portion 14 as the GMPLS node of core node (below, note is made GMPLS node (core)) as shown in Figure 6.PSC-LSP in the GMPLS group is in the IP/MPLS node, and the common link between IP/MPLS is treated equally.In the IP/MPLS node, not advertisement is by the link-state information of the Routing Protocol advertisement of GMPLS.

Fig. 4 illustrates the formation of the control part of GMPLS+IP/MPLS node (edge).The control part of GMPLS+IP/MPLS node (edge) is made of MPLS signaling portion 17, GMPLS signaling portion 10, IP/MPLS Route Selection portion 18, GMPLS Route Selection portion 11, IP/MPLSTED portion 13 and GMPLSTED portion 14. 20 controls of their controlled controllers.GMPLS signaling portion 10 is for example according to GMPLS-RSVP-TE protocol action (for example, with reference to non-patent literature 5).In addition, MPLS signaling portion 17 is according to RSVP-TE protocol action (for example, with reference to non-patent literature 6).

Fig. 5 illustrates the formation of the control part of GMPLS node (core).The control part of GMPLS node (core) is made of GMPLS signaling portion 10, GMPLS Route Selection portion 11 and GMPLSTED portion 14.Their controlled controllers 20 control .GMPLS nodes (core) needn't mate with the IP/MPLS agreement.

The control part of formation .IP/MPLS node that Fig. 6 illustrates the control part of IP/MPLS node is made of MPLS signaling portion 17, IP/MPLS Route Selection portion 18 and IP/MPLSTED portion 13.20 controls of their controlled controllers.The IP/MPLS node needn't mate with the GMPLS agreement.

The IP/MPLS node can be not according to the GMPLS protocol action.The IP/MPLS node can not communicate engineering under the GMPLS agreement. and on the other hand, GMPLS group can communicate engineering under the GMPLS agreement.

[embodiment 2]

When realizing the interface of link, the number mode that shows by the distributing IP address being arranged and by will be as the IP address of node identifier and distributed intrinsic link identifier to make up the non-number mode that shows at intranodal. the link that will use the number mode to show is called the number link, the link that uses non-number mode to show is called non-number link (for example, with reference to non-patent literature 7).

The common distributing IP of LI(link interface) address in the non-number link .MPLS network is described.By the link of IP address in can recognition network. still, in GMPLS, 1 optical fiber can hold the wavelength more than 100, if interface assignment IP address to each wavelength, the IP address that then needs will be a huge number. in addition, because of the LSP of each layer as TE Link to the advertisement of upper layer, so, the anxiety of IP address resource exhaustion is arranged then as if to each TE Link distributing IP address.

Therefore, in GMPLS,, import the link identifier that LI(link interface) is distributed in order to discern link (below, also TE Link is called link sometimes).Though the IP address is necessary the whole world is distributed, link identifier is as long as be unique in each router.By the combination of (node identifier, link identifier), the link in can recognition network.

Link by the combination of (node identifier, link identifier) performance is called non-number link. and non-number is meant not the interface assignment IP address to link.Therefore, in GMPLS, number of wavelengths increases or the TE Link number increases the also inexhausted problem of IP address resource even will solve.

Based on such reason, in GMPLS group, use non-number mode usually. still, only handle the number link and do not handle under the situation of non-number link at the IP/MPLS node, when between GMPLS+IP/MPLS node (edge), having set PSC-LSP, be necessary to be non-number link.

In Fig. 7 A and Fig. 7 B, show the example of number link and non-number link.Shown in Fig. 7 A, for GMPLS+IP/MPLS node in the GMPLS group or GMPLS node, the link of each layer all is non-number link except PSC-LSP.PSC-LSP is set at the number link.Shown in Fig. 7 B,, under the situation of PSC-LSP, use the number link to using in the GMPLS group for the outer IP/MPLS node of GMPLS group.

In Fig. 8 A and Fig. 8 B, show the example of number link and non-number link.Shown in Fig. 8 A, for GMPLS+IP/MPLS node in the GMPLS group or GMPLS node, the link of all layers in the GMPLS group all is non-number link. shown in Fig. 8 B, for the outer IP/MPLS node of GMPLS group, under the situation of PSC-LSP, after the number link that uses in the GMPLS group being transformed into non-number link, re-use.

Like this, even the IP/MPLS node can only be handled the number link, by with PSC-LSP as the number link setting, the IP/MPLS node also can be not according to the GMPLS protocol action.

[embodiment 3]

When with PSC-LSP during as the number link processing, GMPLS+IP/MPLS node (edge) is necessary IP address assignment is given the interface of this link.The IP address must be the value of fixing in network. the IP address of interface of distributing to the PSC-LSP of each node can not be repeated.

As shown in Figure 9, suppose that PSC-LSP is a situation about dynamically setting, each GMPLS+IP/MPLS node (edge) can be distributed to this IP addresses of nodes and be stored in advance in the IP address pool 16.The IP address that is stored in the IP address pool 16 is the value of fixing in network. if when setting PSC-LSP, select 1 IP address in each node secondary IP address pond 16 to link assignment, and obtain as the IP address of the interface of this link. carry out this action at the GMPLS+IP/MPLS at two ends node (edge). by sending out message, the IP address notification that this node is obtained is given the other side's GMPLS+IP/MPLS node (edge).

Figure 10 illustrates the formation of the GMPLS+IP/MPLS node (edge) with IP address pool 16. and the formation of Figure 10 is corresponding with the setting example of Fig. 7 A and Fig. 7 B. promptly, in the setting example of Fig. 7 A and Fig. 7 B, shown in Fig. 7 A, even in GMPLS group, also utilize the number mode to discern to PSC-LSP. Figure 11 illustrates has IP address pool 16 and number/formation of the GMPLS+IP/MPLS node (edge) of non-FH-number transform portion 15.The setting example of the formation of Figure 11 and Fig. 8 A and Fig. 8 B is corresponding. and promptly, in the setting example of Fig. 8 A and Fig. 8 B, use number/non-FH-number transform portion 15 shown in Fig. 8 A, in GMPLS group, can be non-number mode fully.

Like this, even PSC-LSP dynamically sets, by in advance the IP address being stored in the IP address pool 16, the IP address of link also can dynamically be distributed.

[embodiment 4]

In the embodiment of above explanation 1～embodiment 3, for the GMPLS network, with GMPLS+IP/MPLS node that can process IP/mpls protocol be limited to can with the direct-connected fringe node of IP network. in embodiment 4, even not with the direct-connected core node of IP network, also can be as shown in Figure 12, the GMPLS+IP/MPLS node configuration that can handle GMPLS agreement and IP/MPLS agreement is in the GMPLS network.

With reference to Figure 13 A～Figure 13 C the setting situation that the LSP of embodiment 4 sets is described. between GMPLS+IP/MPLS node (edge) 32 and GMPLS+IP/MPLS node (core) 36, set PSC-LSP. in addition, between GMPLS+IP/MPLS node (core) 36 and GMPLS+IP/MPLS node (edge) 39, set PSC-LSP.Because of PSC-LSP sets through LSC-LSP, so before PSC-LSP sets, set LSC-LSP. therefore, GMPLS+IP/MPLS node (edge) is as the common link of IP/MPLS, and the IP/MPLS node outer to the GMPLS network uses.

When to IP/MPLS node 31 and IP/MPLS node 41 setting MPLS-LSP, MPLS-LSP uses PSC-LSP the IP/MPLS node as common link.Therefore, the IP grouping is by in the MPLS-LSP.

In addition, IP/MPLS node 31 also has the situation to the 41 transmission IP groupings of IP/MPLS node without MPLS-LSP. at this moment, to the IP/MPLS node be used at the PSC-LSP that sets between GMPLS+IP/MPLS node (edge) 32 and the GMPLS+IP/MPLS node (core) 36 and between GMPLS+IP/MPLS node (core) 36 and GMPLS+IP/MPLS node (edge) 39 as common link.

Figure 14 illustrates the management condition of the link-state information in the network that is made of IP/MPLS node, GMPLS+IP/MPLS node and GMPLS node.The topology information that IP/MPLS node shown in Figure 14 keeps. the difference of embodiment 4 and embodiment 1 is, even GMPLS+IP/MPLS node (core) 36 discord IP/MP_LS networks directly connect, also can be used as the IP/MPLS router to the IP/MPLS network action.

The Link State of GMPLS node administration GMPLS in the GMPLS group. for example, when the Routing Protocol that uses GMPLS to use in GMPLS during the advertisement Link State, use OpaqueLSA (for example with reference to non-patent literature 2,4,8). handle as common link as the PSC-LSP that will between the GMPLS+IP/MPLS node, set, with the form advertisement identical with the internodal link of IP/MPLS to the IP/MPLS router.For example, when using the OSPF Routing Protocol, use router lsa (for example, with reference to non-patent literature 2).

GMPLS+IP/MPLS node (edge) has GMPLSTED and IP/MPLSTED.The IP/MPLS node has IP/MP_LSTED.GMPLS+IP/MPLS node (core) and has the interior PSC-LSP of GMPLSTED.GMPLS group in the IP/MPLS node, and the common link between IP/MPLS is treated equally. in the IP/MPLS node, not advertisement is by the Link State of the Routing Protocol advertisement of GMPLS.

Even embodiment 4 and embodiment 1 relatively because of not being GMPLS+IP/MPLS node (edge), also can be used as the action of IP/MPLS router, so can implement communication engineering neatly.

[embodiment 5]

In embodiment 1 and embodiment 4, when to the IP/MPLS web advertisement PSC-LSP, under the situation of using the OSPF Routing Protocol, use router lsa.Also can use as other example in the MPLS parameter area of GMPLS expansion OpaqueLSA (for example, with reference to non-patent literature 8). at this moment, as the common link in the IP/MPLS node, utilize the treatable OpaqueLSA of MPLS router the GMPLS tag path to this link-state information of IP/MPLS node advertisement.Therefore, in the IP/MPLS network, can implement the MPLS communication engineering.

[embodiment 6]

Each embodiment shown below is the embodiment after the foregoing description 1～5 is corrected, and therefore, the place that should correct among the embodiment 1～5 is described at first.

Generally, the GMPLS network is made of 2 kinds of networks. and the 1st kind is to be the network of control grouping of agreement of the Control Network of representative to be used for transmitting with Routing Protocol or signaling protocol etc.This network is called chain of command (C-plane). the 2nd kind is the network of setting tag path according to above-mentioned control protocol. this network is called data surface (D-plane), and user's data is grouped in the tag path of this D-plane and transmits.

The topology of GMPLS network utilisation Routing Protocol advertising network.For example, when being the OSPF Routing Protocol, use the topology network of router lsa advertisement C-plane, the topology network that uses the OpaqueLSA advertisement to constitute by the tag path of D-plane.

Shown in above-mentioned embodiment, when to the IP/MPLS web advertisement tag path, use router lsa (be to be used for special router lsa, below be called " tag path router lsa ") to carry out advertisement to IP/MPLS web advertisement tag path.Just, in the above-described embodiments, this tag path router lsa is also in the advertisement of GMPLS network internal. and general, the GMPLS node is managed C-plane and D-plane respectively separately, but if advertisement the tag path router lsa, then in the GMPLS network, the router of not distinguishing advertisement is original router lsa or the tag path router lsa of expression C-plane. promptly, be considered to C-plane and tag path and mix the network of depositing.

Be described in the method for the problem of the such Routing Protocol of solution among following each embodiment.

Have, the GMPLS+IP/MPLS node of each embodiment that the following describes is that the GMPLS+IP/MPLS node to each embodiment of former explanation has appended the node after the inscape again.Therefore, in following each embodiment, only illustrate the inscape of these characteristics, in the inscape (with reference to Fig. 4, Figure 10, Figure 11 etc.) of the GMPLS+IP/MPLS node shown in the various embodiments described above, then omit its diagram for.

As previously mentioned, the GMPLS+IP/MPLS node as the common link in the IP/MPLS node, utilizes router lsa to this link-state information of IP/MPLS node advertisement the GMPLS tag path of packet layer.For this reason, the GMPLS+IP/MPLS node has and is transformed into router lsa again to the function of the IP/MPLS web advertisement with being used in the GMPLS network OpaqueLSA in advertisement tag path.Have, the OpaqueLSA in advertisement tag path is transformed into router lsa in the GMPLS network because of this mark is represented to be used for again, so following it is called " tag path shift sign ".

Figure 15 is the block diagram of formation of the LSA transformation component 50 that has of GMPLS+IP/MPLS intranodal of expression present embodiment. this LSA transformation component 50 is used for realizing described just now 2 functions, is made of OpaqueLSA transformation component 51, router lsa generating unit 52 and LSA advertising department 53.

OpaqueLSA transformation component 51 is being used in the OpaqueLSA of the IP/MPLS web advertisement to router lsa generating unit 52 output, and this OpaqueLSA is added tag path shift sign again to 53 outputs of LSA advertising department. router lsa generating unit 52 with the OpaqueLSA from 51 outputs of OpaqueLSA transformation component be transformed into router lsa again to 53 output .LSA advertising departments 53 of LSA advertising department with from the interpolation of OpaqueLSA transformation component 51 outputs the tag path shift sign OpaqueLSA and from the router lsa of router lsa generating unit 52 outputs to other node advertisements.

Figure 16 illustrates the corresponding relation of the parameter of the parameter of the OpaqueLSA that GMPLS uses and the router lsa that MPLS uses. has again, in the parameter outside diagram, as the parameter relevant, common advertising router of OpaqueLSA and router lsa (AdvertiSing Router) and sequence number (Sequence number) etc. are arranged with the application.

Secondly, describe that transformation component 50 is transformed into router lsa for the OpaqueLSA of the tag path of the D-plane that will represent the GMPLS network in detail and the action carried out.

(1) tag path is that number mode and link type are point-to-point situations

LSA transformation component 50 becomes the link state advertisement type into 1, and duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA being copied in the link data field of router lsa of IP address of expression router interface has again, and the value of link state advertisement type is that 1 expression is a router lsa.

(2) tag path is that non-number mode and link type are point-to-point situations

LSA transformation component 50 becomes the link state advertisement type into 1, and duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the link local identifier field among the OpaqueLSA is copied in the link data field of router lsa of expression ifIndex value.

(3) link type of tag path is the situation of multiple access

LSA transformation component 50 becomes the link state advertisement type into 1, and duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

By above-mentioned functions is installed, can make router lsa with effect of advertisement GMPLS tag path in the MPLS network. here, the LSA that makes in the value in the original OpaqueLSA of reflection, constantly duplicates the value and the LS sequence number of advertising router as shown in figure 16.

[embodiment 7]

Figure 17 is the block diagram of formation of the router lsa identification part 60 that has of GMPLS+IP/MPLS node of expression present embodiment. this router lsa identification part 60 is made of LSA judging part 61 and aforesaid GMPLSTED portion 14.

The GMPLSTED portion 14 of 61 pairs of these nodes of LSA judging part conducts interviews, when receiving the router lsa that other nodes make, discern this router lsa and be advertisement GMPLS C-plane LSA or with the LSA after the conversion of GMPLS tag path.

Promptly, LSA judging part 61 will be included in the value of the value of the advertising router from the router lsa that other nodes receive and LS sequence number as key search GMPLSTED portion 14, when the value that has both in the GMPLSTED portion 14 OpaqueLSA identical with the router lsa that has received, the router lsa that is judged as reception is (that is the tag path router lsa) made after the OpaqueLSA conversion of GMPLS tag path representing.

By above-mentioned functions is installed, can recognition network in the router lsa of advertisement be expression GMPLS network C-plane LSA or represent the LSA that the OpaqueLSA of the tag path of D-plane generates by conversion.Therefore, can differentiate the GMPLS node and should use which router lsa to go to generate the C-plane topology, use which router lsa to go to generate the D-plane topology.

[embodiment 8]

Present embodiment is to make another example with router lsa of the effect of advertisement GMPLS tag path in the MPLS network.The formation of the GMPLS+IP/MPLS node of present embodiment is the same with embodiment 6, and the action of LSA transformation component 50 is different with embodiment 6 parts.

Below, describe the action that OpaqueLSA is transformed into the LSA transformation component 50 of router lsa in detail.

(1) tag path is that number mode and link type are point-to-point situations

LSA transformation component 50 becomes the link state advertisement type into 1, duplicate the value of advertising router, making the tag path shift sign is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

(2) tag path is that non-number mode and link type are point-to-point situations

LSA transformation component 50 becomes the link state advertisement type into 1, duplicate the value of advertising router, making the tag path shift sign is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the link local identifier field among the OpaqueLSA is copied in the link data field of router lsa of expression ifIndex value.

(3) link type of tag path is the situation of multiple access

LSA transformation component 50 becomes the link state advertisement type into 1, duplicate the value of advertising router, making the tag path shift sign is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

By above-mentioned functions is installed, can make router lsa with effect of advertisement GMPLS tag path in the MPLS network. here, the LSA that makes as shown in figure 16, in the value in the original OpaqueLSA of reflection, constantly duplicate the value of advertising router, and to make the tag path shift sign be ON.

[embodiment 9]

Present embodiment be the router lsa of having made of other nodes of identification be advertisement GMPLS C-plane LSA or with another example of the LSA after the conversion of GMPLS tag path.The formation of the GMPLS+IP/MPLS node of present embodiment is the same with embodiment 7, and the action of LSA judging part 61 is different with embodiment 7.

Promptly, the LSA judging part 61 of present embodiment will be included in the value of the advertising router from the router lsa that other nodes receive and the tag path mark GMPLSTED portion 14 as this node of key search, when existing tag path to be labeled as the OpaqueLSA of ON when the value of advertising router in the identical and GMpLSTED portion 14, the router lsa that is judged as reception is the tag path router lsa of making after the OpaqueLSA conversion with expression GMPLS tag path.

By above-mentioned functions is installed, in can recognition network the router lsa of advertisement be expression GMPLS network C-plane LSA or represent that by conversion LSA. that the OpaqueLSA of the tag path of D-plane generates therefore, can differentiate the GMPLS node and should use which router lsa to go to generate the C-plane topology, use which router lsa to go to generate the D-plane topology.

[embodiment 10]

Figure 18 is that expression is used for illustrating the block diagram that the network of present embodiment constitutes. this illustrates the example that is made of networks IP/ MPLS node 71 and 72, GMPLS+IP/MPLS node (edge) 73 and 74, GMPLS+IP/MPLS node (core) 75.In addition, Figure 19 is the figure of the path setting order in the network of expression present embodiment.

Use the C-plane topology of router lsa advertisement GMPLS network, received the C-plane topology of the IP/MPLS node identification GMPLS network of above-mentioned ad content, specify the C-plane of GMPLS network and exported under the situation of the requirement of setting the MPLS tag path at IP/MPLS node with this topology information, when there is consistent GMPLS tag path in two end nodes of the link of the C-plane on the path that is required appointment by this, this GMPLS tag path is distributed the path of appointment.

By above-mentioned functions is installed, through the GMPLS network, when setting the MPLS path, specify the path of GMPLS network internal from the IP/MPLS node of the outside of GMPLS network, can carry out the setting in path like this.

If, when the path of IP/MPLS node 71 appointments is the link of C-plane of GMPLS network, GMPLS+IP/MPLS node (edge) 73 in the GMPLS network and GMPLS+IP/MPLS node (core) 75 on the path change the appointment of C-plane into the link (tag path) of reading the D-plane corresponding with this C-plane, set path again.

C-plane is the network that is used for transmitting control signal originally, not necessarily guarantee to transmit the bandwidth of Large Volume Data. therefore, in the present embodiment, has above-mentioned functions, even the C-plane of the GMPLS network that can see from the IP/MPLS node is used as the path and specifies, by on same path, automatically it being changed into corresponding D-plane, also can distribute the suitable network that is used for transmitting data.

The example of Figure 18 is the C-plane that dots the specified path of IP/MPLS node.At this moment, if set the existing GMPLS tag path of representing with thick line (if being set) to the tag path of the IP/MPLS web advertisement, then relaying GMPLS+IP/MPLS node (edge) 73 and GMPLS+IP/MPLS node (core) 75 change into and read this tag path, the path are become the tag path of D-plane.

Figure 19 illustrates order at this moment. as shown in figure 19, when IP/MPLS node 71 requires to carry out MPLS tag path setting (PATH information), the appointment that GMPLS+IP/MPLS node (edge) 73 makes reading of the appointment of C-plane into D-plane read the back set path, GMPLS+IP/MPLS node (core) 75 carries out same work. and, when MPLS tag path setting requirement is sent to IP/MPLS node 72 in proper order, this is responded, and the MPLS tag path that IP/MPLS node 72 generates is set and is required response (RESV information) order to be sent to IP/MPLS node 71.

[embodiment 11]

Figure 20 is the figure of the path setting order of expression present embodiment. have, the network of present embodiment constitutes identical with the embodiment 10 of Figure 18 again.

In the present embodiment, the same with embodiment 10, use the C-plane topology of router lsa advertisement GMPLS network, the IP/MPLS node that has received above-mentioned ad content identifies the C-plane topology of GMPLS network, specify the C-plane of GMPLS network and exported under the situation of the requirement of setting the MPLS tag path at IP/MPLS node with this topology information, when there is not consistent GMPLS tag path in two end nodes of the link of the C-plane on the path that is required appointment by this, the GMPLS+IP/MPLS node of present embodiment is set the MPLS tag path of above-mentioned IP/MPLS node output and is required as triggering, the new bidding of the D-plane corresponding with the both link ends node of C-plane is signed the path, and the tag path of newly establishing is distributed the path of appointment.

By above-mentioned functions is installed, even the MPLS node is specified the C-plane of GMPLS network and is not had a tag path corresponding with this link as the path, also can automatically regenerate this tag path, can use this new tag path to go to set the path of MPLS.

Figure 20 illustrates the tag path of MPLS at this moment.As shown in figure 20, IP/MPLS node 71 output MPLS tag paths are set require (PATH information).Set the GMPLS+IP/MPLS node (edge) 73 that requires and detect two end nodes of setting the link of the C-plane on the path that requires appointment by this MPLS tag path when not having consistent GMPLS tag path when receiving this MPLS tag path, generate the GMPLS tag path and set require (PATH information).This GMPLS tag path is set and is required to be sent to GMPLS+IP/MPLS node (edge) 74. therefore through GMP_LS+IP/MPLS node (core) 75, and the new bidding of D-plane is signed the path.Respond this GMPLS tag path and set requirement, GMPLS+IP/MPLS node (edge) 74 generates the GMPLS tag path and sets the requirement response, and this GMPLS tag path is set and required response to be sent to GMPLS+IP/MPLS node (edge) 73.At this moment, each GMPLS+IP/MPLS node distributes the path of appointment to the tag path of newly establishing.Then, the same with embodiment 10, after the setting of MPLS tag path required to be sent to IP/MPLS node 72, the MPLS tag path was set and is required response to be sent to IP/MPLS node 71.

[embodiment 12]

Present embodiment is when in the foregoing description 10 or embodiment 11, when two end nodes of the link of the C-plane of the GMPLS network of IP/MPLS node appointment are distributed consistent GMPLS tag path, the GMPLS+IP/MPLS node of accepting directly to require from the IP/MPLS node does not pass through the path of IP/MPLS node appointment, and transmit the data that send from the IP/MPLS node by resembling the GMPLS tag path that distributes above-mentioned. promptly, when GMPLS+IP/MPLS node (edge) will specify the tag path of C-plane to change over the tag path of D-plane, meanwhile, change the routing table (not shown) of this GMPLS+IP/MPLS node (edge), the tag path to D-plane transmits again.

Above, with reference to description of drawings most preferred embodiment of the present invention, but the present invention is not limited to the foregoing description, also can for example carry out suitable combination to the inscape of these embodiment.

If according to the present invention, even mix under the situation of depositing, also the IP/MPLS node can be replaced as node with GMPLS function at GMPLS and IP/MPLS, make the on-line operation of IP/MPLS node, can realize that GMPLS and IP/MPLS mix the network of depositing.Therefore, node applied widely, the cost of node is low. in addition, when network design, because of the kind of the node that can reduce configuration, so can improve the degree of freedom of design. in addition, if according to the present invention, when connecting GMPLS network and IP/MPLS network, can make the Routing Protocol operate as normal.Therefore, can effectively and neatly use network by communicating the traffic engineered business of disperseing on this basis.

Claims (43)

1, a kind of GMPLS+IP/MPLS node, GMPLS Control network and Internet Protocol IP network are mixed and are deposited, above-mentioned GMPLS network is made of the node with GMPLS function, the above-mentioned IP network is applicable to the network by Internet Protocol/multiprotocol label switching IP/MPLS node constitutes, can constitute above-mentioned GMPLS network, and handle GMPLS agreement and IP/MPLS agreement, it is characterized in that having:

And above-mentioned GMPLS network in other GMPLS+IP/MPLS nodes between set the device of the GMPLS tag path of packet layer; And

Utilize this GMPLS tag path, and other GMPLS+IP/MPLS nodes between, to carry out the device that the tunnel transmits from the grouping that above-mentioned IP/the MPLS node sends.

2, the GMPLS+IP/MPLS node of claim 1 record is characterized in that: have GMPLS tag path with above-mentioned packet layer as the common link in the IP/MPLS node and utilize the device of router label exchange advertisement LSA with the advertisement on the IP/MPLS node of this link-state information.

3, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: have maintenance with the GMPLS tag path of above-mentioned packet layer as the link advertisement link-state information device and keep the device of the link-state information of above-mentioned GMPLS network internal.

4, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: but have the device that packet switching one label switched path PSC-LSP link that IP/MPLS is used becomes the link that is re-used as the number mode after the number mode to carry out advertisement non-number mode conversion.

5, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: be re-used as the device that the link of number mode carries out advertisement after having the device handled with non-number mode and PSC-LSP link to the IP/MPLS use becomes the number mode with non-number mode conversion in above-mentioned GMPLS network.

6, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: have the device that the GMPLS label switched path of above-mentioned packet layer is carried out advertisement as the link of number mode.

7, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: be re-used as the device that the link of number mode carries out advertisement after having the device handled with non-number mode and GMPLS label switched path to above-mentioned packet layer becomes the number mode with non-number mode conversion in above-mentioned GMPLS network.

8, the GMPLS+IP/MPLS node of any one record of claim 4 to 7 is characterized in that: have the device of storing IP address in advance and the device that this stored IP address is used as the IP address of the link of above-mentioned number mode.

9, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: have the LSA converting means that the OpaqueLSA of the tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa,

Above-mentioned LSA converting means is when above-mentioned tag path is the point-to-point Linktype of number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

10, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: have the LSA converting means that the OpaqueLSA of the tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa,

Above-mentioned LSA converting means is when above-mentioned tag path is the point-to-point Linktype of non-number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the link local identifier field among the OpaqueLSA is copied in the link data field of router lsa of expression ifIndex value.

11, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: have the LSA converting means that the OpaqueLSA of the tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa,

Above-mentioned LSA converting means is when above-mentioned tag path is the Linktype of multiple access, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

12, the GMPLS+IP/MPLS node of any one record of claim 9 to 11, it is characterized in that: have router lsa that the GMPLS+IP/MPLS node that receives other makes discern again this router lsa be the above-mentioned GMPLS network of advertisement C-plane LSA or will represent the GMPLS tag path the OpaqueLSA conversion the LSA recognition device of LSA and the Link State holding device of the link-state information of the above-mentioned GMPLS network of maintenance

Above-mentioned LSA recognition device will be included in the value of the advertising router in the router lsa that has received and the value of LS sequence number is retrieved the above-mentioned Link State holding device of this node as keyword, when the link-state information of same advertising router of the router lsa that has He received and LS sequence number is in above-mentioned Link State holding device, be judged as the router lsa that has received and be the OpaqueLSA conversion that will represent the GMPLS tag path LSA.

13, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: have the LSA converting means that the OpaqueLSA of the tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa,

Above-mentioned LSA converting means is when above-mentioned tag path is the point-to-point Linktype of number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of above-mentioned GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

14, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: have the LSA converting means that the OpaqueLSA of the tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa,

Above-mentioned LSA converting means is when above-mentioned tag path is the point-to-point Linktype of non-number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of above-mentioned GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the link local identifier field among the OpaqueLSA is copied in the link data field of router lsa of expression ifIndex value.

15, the GMPLS+IP/MPLS node of claim 2 record is characterized in that: have the LSA converting means that the OpaqueLSA of the tag path of the D-plane of the above-mentioned GMPLS network of expression is transformed into router lsa,

Above-mentioned LSA converting means is when above-mentioned tag path is the Linktype of multiple access, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of above-mentioned GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

16, the GMPLS+IP/MPLS node of any one record in the claim 13 to 15, it is characterized in that: have router lsa that the GMPLS+IP/MPLS node that receives other makes discern again this router lsa be the above-mentioned GMPLS network of advertisement C-plane LSA or will represent the GMPLS tag path the OpaqueLSA conversion the LSA recognition device of LSA and the Link State holding device of the link-state information of the above-mentioned GMPLS network of maintenance

Above-mentioned LSA recognition device will be included in the value and the tag path shift sign of the advertising router in the router lsa that has received and as keyword the Link State holding device of this node be retrieved, when the value of advertising router identical with the router lsa that has received, link-state information when the tag path shift sign is ON is in above-mentioned Link State holding device the time, be judged as the router lsa that has received and be the OpaqueLSA conversion that will represent the GMPLS tag path LSA.

17, the GMPLS+IP/MPLS node of claim 2 record, it is characterized in that, have: in the topology of the C-plane that utilizes the above-mentioned GMPLS network of router lsa advertisement, the IP/MPLS node that has received this router lsa identifies the topology of the C-plane of above-mentioned GMPLS network, and the IP/MPLS node output with information relevant with this topology is specified the C-plane of above-mentioned GMPLS network and is set under the situation of requirement of MPLS tag path, during the GMPLS tag path of the node unanimity of the both link ends of the C-plane on having the path that requires appointment by this, this GMPLS tag path is distributed the device in the path of appointment.

18, the GMPLS+IP/MPLS node of claim 2 record, it is characterized in that, have: in the topology of the C-plane that utilizes the above-mentioned GMPLS network of router lsa advertisement, the IP/MPLS node that has received this router lsa identifies the topology of the C-plane of above-mentioned GMPLS network, and the IP/MPLS node output with information relevant with this topology is specified the C-plane of above-mentioned GMPLS network and is set under the situation of requirement of MPLS tag path, during the GMPLS tag path of the node unanimity of the both link ends of the C-plane on not having the path that requires appointment by this, the MPLS tag path of this IP/MPLS node output is set requirement as triggering, the D-plane corresponding with the node of the both link ends of C-plane newly is provided with tag path, and this newly-installed tag path distributed the device in the path of appointment.

19, the GMPLS+IP/MPLS node of claim 17 or 18 records, it is characterized in that, have: under the situation of having distributed by the GMPLS tag path of the node unanimity of the both link ends of the C-plane of the above-mentioned GMPLS network of above-mentioned IP/MPLS node appointment, when this node is directly when above-mentioned IP/MPLS node receives the GMPLS+IP/MPLS node that requires, make from data that above-mentioned IP/the MPLS node sends not at the device that transmits at the above-mentioned GMPLS tag path that has distributed by the path of IP/MPLS node appointment.

20, a kind of IP/MPLS node, GMPLS network and IP network are mixed and are deposited, and above-mentioned GMPLS network is made of the node with GMPLS function, and the above-mentioned IP network is applicable to the network that is made of the IP/MPLS node, can be connected with above-mentioned GMPLS network, it is characterized in that:

Constitute above-mentioned GMPLS network and can handle the GMPLS agreement and the GMPLS+IP/MPLS node of IP/MPLS agreement and above-mentioned GMPLS network in other GMPLS+IP/MPLS nodes between set the GMPLS tag path of packet layer, this IP/MPLS node has the link-state information of advertisement has been carried out the GMPLS tag path of this packet layer in maintenance as link device.

21, a kind of GMPLS and IP/MPLS mix the network of depositing, it is characterized in that, comprising: the IP/MPLS node of the GMPLS+IP/MPLS node of claim 1 record and the device that is connected and has maintenance carried out the GMPLS tag path of above-mentioned packet layer advertisement as link link-state information with above-mentioned GMPLS network.

22, a kind of block communication method, GMPLS network and IP network are mixed and are deposited, above-mentioned GMPLS network is made of the node with GMPLS function, the above-mentioned IP network is the network that is made of the IP/MPLS node, above-mentioned IP/MPLS node and have a transmitting-receiving grouping between the node of above-mentioned GMPLS function, it is characterized in that, carry out:

The step that directly is connected and can handles the GMPLS+IP/MPLS node of GMPLS agreement and IP/MPLS agreement with the above-mentioned IP network is set in the node with above-mentioned GMPLS function that constitutes above-mentioned GMPLS network;

Above-mentioned GMPLS+IP/MPLS node and above-mentioned GMPLS network in other GMPLS+IP/MPLS nodes between set the step of the GMPLS tag path of packet layer; And

Utilize this GMPLS tag path, and other GMPLS+IP/MPLS nodes between, to carry out the step that the tunnel transmits from the grouping that above-mentioned IP/the MPLS node sends.

23, the block communication method of claim 22 record is characterized in that: with the GMPLS tag path of above-mentioned packet layer as the common link in the IP/MPLS node and utilize router lsa with the advertisement on the IP/MPLS node of this link-state information.

24, the block communication method of claim 22 record is characterized in that: with the GMPLS tag path of above-mentioned packet layer as the common link in the IP/MPLS node and utilize the treatable OpaqueLSA of MPLS router with the advertisement on the IP/MPLS node of this link-state information.

25, the block communication method of claim 23 record, it is characterized in that: maintenance is carried out the link-state information of advertisement with the GMPLS tag path of this packet layer as link, and keeps the link-state information of above-mentioned GMPLS network internal.

26, the block communication method of claim 23 record is characterized in that: the PSC-LSP link with IP/MPLS uses, become the number mode from non-number mode conversion, and the link that is re-used as the number mode carries out advertisement.

27, the block communication method of claim 23 record, it is characterized in that: in above-mentioned GMPLS network, handle with non-number mode, and the PSC-LSP link that IP/MPLS is used, become the number mode from non-number mode conversion, the link that is re-used as the number mode carries out advertisement.

28, the block communication method of claim 23 record is characterized in that: the GMPLS label switched path of above-mentioned packet layer is carried out advertisement as the link of number mode.

29, the block communication method of claim 23 record, it is characterized in that: in above-mentioned GMPLS network, handle with non-number mode, and the GMPLS label switched path of above-mentioned packet layer is become the number mode from non-number mode conversion, the link that is re-used as the number mode carries out advertisement.

30, the block communication method of any one record of claim 26 to 29 is characterized in that: storing IP address in advance, and this stored IP address used as the IP address of the link of above-mentioned number mode.

31, the block communication method of claim 23 record, it is characterized in that: for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network is transformed into router lsa, when above-mentioned tag path is the point-to-point Linktype of number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

32, the block communication method of claim 23 record, it is characterized in that: for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network is transformed into router lsa, when above-mentioned tag path is the point-to-point Linktype of non-number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the link local identifier field among the OpaqueLSA is copied in the link data field of router lsa of expression ifIndex value.

33, the block communication method of claim 23 record, it is characterized in that: for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network is transformed into router lsa, when above-mentioned tag path is the Linktype of multiple access, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router and the value of LS sequence number, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

34, the block communication method of any one record of claim 31 to 33, it is characterized in that: receive the router lsa that other GMPLS+IP/MPLS node is made, for discern this router lsa be the above-mentioned GMPLS network of advertisement C-plane LSA or will represent the GMPLS tag path the OpaqueLSA conversion LSA, to be included in the value of the value of the advertising router in the router lsa that has received and LS sequence number as keyword, self the Link State holding device of GMPLS+IP/MPLS node to the link-state information that keeps above-mentioned GMPLS network is retrieved, when the link-state information of same advertising router of the router lsa that has He received and LS sequence number is in above-mentioned Link State holding device, be judged as the router lsa that has received and be the OpaqueLSA conversion that will represent the GMPLS tag path LSA.

35, the block communication method of claim 23 record, it is characterized in that: for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network is transformed into router lsa, when above-mentioned tag path is the point-to-point Linktype of number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of above-mentioned GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

36, the block communication method of claim 23 record, it is characterized in that: for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network is transformed into router lsa, when above-mentioned tag path is the point-to-point Linktype of non-number mode, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of above-mentioned GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the link local identifier field among the OpaqueLSA is copied in the link data field of router lsa of expression ifIndex value.

37, the block communication method of claim 23 record, it is characterized in that: for the OpaqueLSA of the tag path of the D-plane that will represent above-mentioned GMPLS network is transformed into router lsa, when above-mentioned tag path is the Linktype of multiple access, the link state advertisement type is become corresponding with router lsa 1, duplicate the value of advertising router, the tag path shift sign that makes expression will represent the OpaqueLSA of tag path of the D-plane of above-mentioned GMPLS network to be transformed into router lsa is ON, the value of the link id field among the OpaqueLSA is copied in the link id field of router lsa, the value of the local interface IP address field among the OpaqueLSA is copied in the link data field of router lsa of IP address of expression router interface.

38, the block communication method of any one record of claim 35 to 37, it is characterized in that: receive the router lsa that other GMPLS+IP/MPLS node is made, for discern this router lsa be the above-mentioned GMPLS network of advertisement C-plane LSA or will represent the GMPLS tag path the OpaqueLSA conversion LSA, to be included in the value of the advertising router in the router lsa that has received and tag path shift sign as keyword, self the Link State holding device of GMPLS+IP/MPLS node to the link-state information that keeps above-mentioned GMPLS network is retrieved, when the value of advertising router identical with the router lsa that has received, link-state information when the tag path shift sign is ON is in above-mentioned Link State holding device the time, be judged as the router lsa that has received and be the OpaqueLSA conversion that will represent the GMPLS tag path LSA.

39, the block communication method of claim 23 record, it is characterized in that: above-mentioned GMPLS+IP/MPLS node utilizes the topology of the C-plane of the above-mentioned GMPLS network of router lsa advertisement, the IP/MPLS node that has received this router lsa identifies the topology of the C-plane of above-mentioned GMPLS network, IP/MPLS node with information relevant with this topology is exported C-plane that specifies above-mentioned GMPLS network and the requirement of setting the MPLS tag path, during the GMPLS tag path of the node unanimity of the both link ends of the C-plane on having the path that is required appointment by this, above-mentioned GMPLS+IP/MPLS node distributes the path of appointment to this GMPLS tag path.

40, the block communication method of claim 23 record, it is characterized in that: above-mentioned GMPLS+IP/MPLS node utilizes the topology of the C-plane of the above-mentioned GMPLS network of router lsa advertisement, the IP/MPLS node that has received this router lsa identifies the topology of the C-plane of above-mentioned GMPLS network, IP/MPLS node with information relevant with this topology is exported C-plane that specifies above-mentioned GMPLS network and the requirement of setting the MPLS tag path, during the GMPLS tag path of the node unanimity of the both link ends of the C-plane on not having the path that requires appointment by this, above-mentioned GMPLS+IP/MPLS node is set the MPLS tag path of this IP/MPLS node output and is required as triggering, the D-plane corresponding with the node of the both link ends of C-plane newly is provided with tag path, and this newly-installed tag path is distributed the path of appointment.

41, the block communication method of claim 39 or 40 records, it is characterized in that: under the situation of having distributed, directly receive the GMPLS+IP/MPLS node that requires and make from the data that above-mentioned IP/the MPLS node sends and do not transmitting at the above-mentioned GMPLS tag path that has distributed by the path of IP/MPLS node appointment from above-mentioned IP/MPLS node by the GMPLS tag path of the node unanimity of the both link ends of the C-plane of the above-mentioned GMPLS network of above-mentioned IP/MPLS node appointment.

42, the block communication method of claim 23 record is characterized in that: the maintenance of IP/MPLS node is carried out advertisement with the GMPLS tag path of above-mentioned packet layer as link link-state information.

43, a kind of network constituting method, following node constitutes GMPLS and IP/MPLS mixes the network of depositing by being provided with:

Use the GMPLS+IP/MPLS node of the block communication method transmitting-receiving grouping of claim 22 record; And

The IP/MPLS node of transmitting-receiving grouping, it as the common link in the IP/MPLS node and utilize router lsa with the advertisement on the IP/MPLS node of this link-state information, and keeps the GMPLS tag path of above-mentioned packet layer is carried out advertisement as link link-state information with the GMPLS tag path of above-mentioned packet layer.

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