CN102164188A - Network address allocation method, device and system - Google Patents
Network address allocation method, device and system Download PDFInfo
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Abstract
The invention discloses a network address allocation method, a network address allocation device and a network address allocation system, which relate to the field of network communication and can allocate a plurality of Internet protocol (IP) addresses to a network element. The network address allocation method comprises the following steps of: acquiring an identifier of an opposite-end network element connected with a non-gateway network element and the identifier of a corresponding port of the opposite-end network element connected with the non-gateway network element by using the non-gateway network element; establishing correspondence information between a port of the non-gateway network element and the corresponding port of the opposite-end network element according to the identifier of the opposite-end network element and the identifier of the corresponding port of the opposite-end network element; transmitting the identifier of the non-gateway network element and the correspondence information to a gateway network element; transmitting an IP address request message to the gateway network element; and receiving the IP address allocated to the non-gateway network element by the gateway network element. The embodiment of the invention realizes the function of automatically allocating the IP address to the non-gateway network element, and a management IP address and a plurality of port IP addresses can be allocated to the non-gateway network element.
Description
Technical field
The present invention relates to network communication field, relate in particular to the methods, devices and systems that a kind of network address is distributed.
Background technology
In wireless communication system, the network carrying between mobile base station and the wireless core equipment is born by fixed communication device.At wireless network to LTE (Long Term Evolution, wireless Long Term Evolution) and in the process of the 4th third-generation mobile communication technology evolution, the continuous lifting of user's access bandwidth need be by improving coverage rate and improve the radio open bandwidth and realize, this can cause the expansion of Radio Access Network scale and the expansion of the fixedly bearer network network size that is complementary.The multiplication of wireless backhaul load bearing equipment quantity and geographical distribution scattered causes traditional network design and maintenance mode cost sharply to rise.
The deployment of conventional wireless backhaul network needs the engineer to carry out hardware installation, field commissioning, onsite acceptance.Manual operation not only efficient is low, and cost of labor is very high.Along with the continuous expansion of network size, equipment is installed, debugging artificial, transportation cost may be considerably beyond the price of equipment itself.A lot of for this reason prior aries have proposed the notion of automatic configuration, after the hardware device installation powers on, realize long-range automation equipment configuration and transfer survey, time and the Financial cost of avoiding engineer's execute-in-place to bring.
Prior art provides a kind of equipment configuration scheme that does not need engineer's field adjustable, and can generate automatically with the Gateway Network Element is the tree-like routing management path of root node.As shown in Figure 1, in the system that the described fixed communication device of this scheme is formed, the network element node is divided into Gateway Network Element and non-gateway network element.Described Gateway Network Element can be directly and network management server communicate, all non-gateway network element of Gateway Network Element subordinate all need could carry out UNICOM with network management server by Gateway Network Element.Wherein, one-level network element and Gateway Network Element are direct-connected; Secondary network element and one-level network element are direct-connected, and via one-level network element visit Gateway Network Element.In this scheme, also do not obtain the IP address of the non-gateway network element of IP address to a management usefulness of Gateway Network Element application.After obtaining the IP address of management usefulness, non-gateway network element sends the route register requirement by the mode of registration step by step to Gateway Network Element, sets up the routed path that plays Gateway Network Element.Each non-gateway network element is all carried out above-mentioned steps, sets up whole tree-like routing management path thus.
State in realization in the process of setting up tree-like routing management path, the inventor finds that there are the following problems at least in the prior art: the equipment in most bearer networks of practical application at present all uses ethernet port, and according to the shared mechanism of Ethernet, each IP address must corresponding unique port numbers.The prior art scheme is only distributed an IP address to each network element, can't satisfy the use needs of the network element that has a plurality of ports, and promptly the prior network device product does not allow the IP address unnumbered of ethernet port.Therefore, the realizability of the scheme that provides of prior art is very low.
Summary of the invention
Embodiments of the invention provide a kind of distribution method, device and system of the network address, can distribute a plurality of IP address for network element.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, the embodiment of the invention provides a kind of distribution method of the network address, comprising:
Non-gateway network element obtains the sign of the opposite end network element that links to each other with described non-gateway network element, and the sign of the corresponding port of the opposite end network element that links to each other with described non-gateway network element;
According to the sign of the corresponding port of the sign of described opposite end network element and opposite end network element, set up the correspondence relationship information of port with the corresponding port of described opposite end network element of described non-gateway network element;
The sign and the described correspondence relationship information of described non-gateway network element are sent to Gateway Network Element;
Send the IP address request to described Gateway Network Element, so that described Gateway Network Element is that described non-gateway network element distributes corresponding IP address according to the sign and the described correspondence relationship information of described non-gateway network element;
Receiving described Gateway Network Element is described non-gateway network element IP address allocated, and described IP address comprises that the management ip address of described non-gateway network element correspondence and described non-gateway network element comprise port corresponding port IP address.
On the one hand, the embodiment of the invention also provides a kind of distribution method of the network address, comprising:
Gateway Network Element receives the correspondence relationship information of port with the corresponding port of opposite end network element of the sign of the described non-gateway network element that non-gateway network element sends and described non-gateway network element;
When receiving the IP address request of described non-gateway network element transmission, according to the described non-gateway network element allocation manager of being designated of described non-gateway network element IP address, and, be the port assignment Port IP address of the described non-gateway network element that needs the distributing IP address according to described correspondence relationship information;
Send IP address allocated to described non-gateway network element, described IP address comprises that the management ip address of described non-gateway network element correspondence and described non-gateway network element comprise port corresponding port IP address.
On the other hand, the embodiment of the invention provides a kind of distributor of the network address, comprising:
The opposite end information acquisition unit is used to obtain the sign of the opposite end network element that links to each other with non-gateway network element, and the sign of the corresponding port of the opposite end network element that links to each other with described non-gateway network element;
Corresponding relation is set up the unit, is used for the sign according to the corresponding port of the sign of described opposite end network element and opposite end network element, sets up the correspondence relationship information of port with the corresponding port of described opposite end network element of described non-gateway network element;
The network element topology information transmitting unit is used for the sign and the described correspondence relationship information of described non-gateway network element are sent to Gateway Network Element;
IP Address requests unit is used for sending the IP address request to described Gateway Network Element, so that described Gateway Network Element is that described non-gateway network element distributes corresponding IP address according to the sign and the described correspondence relationship information of described non-gateway network element;
IP address receiving element, being used to receive described Gateway Network Element is described non-gateway network element IP address allocated, described IP address comprises that the management ip address of described non-gateway network element correspondence and described non-gateway network element comprise port corresponding port IP address.
On the other hand, the embodiment of the invention also provides a kind of distributor of the network address, comprising:
The net element information receiving element is used to receive the correspondence relationship information of the port of the corresponding port of the sign of the described non-gateway network element that non-gateway network element sends and described non-gateway network element and opposite end network element;
The IP address assignment unit, be used for when Gateway Network Element receives the IP address request of described non-gateway network element transmission, according to the described non-gateway network element allocation manager of being designated of described non-gateway network element IP address, and, be the port assignment Port IP address of the described non-gateway network element that needs the distributing IP address according to described correspondence relationship information;
IP address transmitting element is used for sending IP address allocated to described non-gateway network element, and described IP address comprises that the management ip address of described non-gateway network element correspondence and described non-gateway network element comprise port corresponding port IP address.
On the one hand, fact Example of the present invention provides a kind of distribution system of the network address, comprising again:
First installs, and is used to obtain the sign of the opposite end network element that links to each other with non-gateway network element, and the sign of the corresponding port of the opposite end network element that links to each other with described non-gateway network element; According to the sign of the corresponding port of the sign of described opposite end network element and opposite end network element, set up the correspondence relationship information of port with the corresponding port of described opposite end network element of described non-gateway network element; The sign and the described correspondence relationship information of described non-gateway network element are sent to Gateway Network Element; Send the IP address request to described Gateway Network Element, so that described Gateway Network Element is that described non-gateway network element distributes corresponding IP address according to the sign and the described correspondence relationship information of described non-gateway network element; Receiving described Gateway Network Element is described non-gateway network element IP address allocated;
Second device is used to receive the correspondence relationship information of port with the corresponding port of opposite end network element of the sign of the described non-gateway network element that non-gateway network element sends and described non-gateway network element; When receiving the IP address request of described non-gateway network element transmission, according to the described non-gateway network element allocation manager of being designated of described non-gateway network element IP address, and, be the port assignment Port IP address of the described non-gateway network element that needs the distributing IP address according to described correspondence relationship information; Send IP address allocated to described non-gateway network element, described IP address comprises that the management ip address of described non-gateway network element correspondence and described non-gateway network element comprise port corresponding port IP address.
The distribution method of the network address that the embodiment of the invention provides, device and system, by sending the sign of non-gateway network element, the sign of port and the relevant information of opposite end network element to Gateway Network Element, make Gateway Network Element obtain the topological structure of non-gateway network element, thereby realized function for non-gateway network element allocation manager IP address and a plurality of Port IP address.
Description of drawings
Fig. 1 is the distribution relation schematic diagram of network element in the network system;
Fig. 2 is the flow chart of the distribution method of the network address of non-gateway network element side in the embodiment of the invention 1;
Fig. 3 is the flow chart of the distribution method of the network address of Gateway Network Element side in the embodiment of the invention 1;
Fig. 4 is the block diagram of the distributor of the network address of non-gateway network element in the embodiment of the invention 1;
Fig. 5 is the block diagram of the distributor of the network address of Gateway Network Element in the embodiment of the invention 1;
Fig. 6 is the flow chart of the distribution method of the network address in the embodiment of the invention 2;
Fig. 7 is the schematic diagram of presentation address mapping relations in the embodiment of the invention 2;
Fig. 8 carries out the signaling diagram that the network address is distributed then for carrying out topology information collection based on Link Layer Discovery Protocol in the embodiment of the invention 2;
Fig. 9 is the block diagram of a kind of distributor of the network address in the embodiment of the invention 3;
Figure 10 is the block diagram of the distributor of the another kind of network address in the embodiment of the invention 3;
Figure 11 is the block diagram of the distributor of the another kind of network address in the embodiment of the invention 3;
Figure 12 is the schematic diagram of topology information table in the embodiment of the invention 2.
Embodiment
Be clearly and completely described below in conjunction with the accompanying drawing of the embodiment of the invention technical scheme to the embodiment of the invention, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment 1:
The embodiment of the invention provides a kind of distribution method of the network address, and this method is the method for non-gateway network element side, and as shown in Figure 2, this method comprises:
201, non-gateway network element obtains the sign of the opposite end network element that links to each other with described non-gateway network element, and the sign of the corresponding port of described opposite end network element, and described corresponding port is meant the port that described opposite end network element links to each other with described non-gateway network element.
202, set up the correspondence relationship information of port with the corresponding port of described opposite end network element of described non-gateway network element.
After described non-gateway network element gets access to the sign of corresponding port of sign, opposite end network element of described opposite end network element, set up the correspondence relationship information between the corresponding port of the described opposite end of port network element of described non-gateway network element.
203, sign and the described correspondence relationship information with described non-gateway network element sends to Gateway Network Element.
When described non-gateway network element and described Gateway Network Element are direct-connected, the sign and the described correspondence relationship information of described non-gateway network element directly is sent to Gateway Network Element; When described non-gateway network element not with described Gateway Network Element when direct-connected, the sign of described non-gateway network element and described correspondence relationship information at first send to higher level's non-gateway network element, and send to described Gateway Network Element by higher level's network element.
204, send the IP address request to described Gateway Network Element.
It is that described non-gateway network element distributes corresponding IP address according to the sign and the described correspondence relationship information of described non-gateway network element that described IP address request is used to make described Gateway Network Element.
205, receiving described Gateway Network Element is described non-gateway network element IP address allocated.
Described IP address comprises the Port IP address of the management ip address and the port that described non-gateway network element comprises of described non-gateway network element correspondence.
The embodiment of the invention also provides a kind of distribution method of the network address, and this method is the method for Gateway Network Element side, and as shown in Figure 3, this method comprises:
301, Gateway Network Element receives the correspondence relationship information of port with the corresponding port of opposite end network element of the sign of the non-gateway network element that non-gateway network element sends and non-gateway network element.
302, when receiving the IP address request of described non-gateway network element transmission, be described non-gateway network element distributing IP address.
Wherein, described Gateway Network Element is according to the described non-gateway network element allocation manager of being designated of described non-gateway network element IP address; According to described correspondence relationship information, be the port assignment Port IP address of the described non-gateway network element that needs the distributing IP address.
The function of IP address assignment is usually by IP address assignment server such as DHCP (Dynamic Host Configuration Protocol, DHCP) server is realized, in the practical application, described IP address assignment server often is integrated in the Gateway Network Element.Certainly, described IP address assignment server also can separate deployment with described Gateway Network Element.Under the situation of separately disposing, described IP address request is received and sends to described IP address assignment server by Gateway Network Element; Described IP address assignment server sends to described non-gateway network element with IP address allocated via described Gateway Network Element.
303, send IP address allocated to described non-gateway network element.
Described IP address comprises the Port IP address of the management ip address and the port that described non-gateway network element comprises of described non-gateway network element correspondence.
The embodiment of the invention also provides a kind of distributor of the network address, and this device can be non-gateway network element, but the embodiment of the invention do not limit this, as shown in Figure 4, comprising:
Opposite end information acquisition unit 41, corresponding relation are set up unit 42, network element topology information transmitting unit 43, IP Address requests unit 44, IP address receiving element 45.
Opposite end information acquisition unit 41 is used to obtain the sign of the opposite end network element that links to each other with non-gateway network element, and the sign of the corresponding port of described opposite end network element, and described corresponding port is meant the port that described opposite end network element links to each other with described non-gateway network element.Corresponding relation is set up unit 42 and is used for sign according to the corresponding port of the sign of described opposite end network element and opposite end network element, sets up the correspondence relationship information of port with the corresponding port of described opposite end network element of described non-gateway network element.Network element topology information transmitting unit 43 is used for the sign of described non-gateway network element and described correspondence relationship information are sent to Gateway Network Element.IP Address requests unit 44 is used for sending the IP address request to described Gateway Network Element, described IP address request is received by described Gateway Network Element, makes that described Gateway Network Element is that described non-gateway network element distributes corresponding IP address according to the sign and the described correspondence relationship information of described non-gateway network element.It is described non-gateway network element IP address allocated that IP address receiving element 45 is used to receive described Gateway Network Element.Wherein said IP address comprises that the management ip address of described non-gateway network element correspondence and described non-gateway network element comprise port corresponding port IP address.
The embodiment of the invention also provides a kind of distributor of the network address, this device can be Gateway Network Element, but the embodiment of the invention does not limit this, as shown in Figure 5, comprises net element information receiving element 51, IP address assignment unit 52, IP address transmitting element 53.
Net element information receiving element 51 is used to receive the correspondence relationship information of port with the corresponding port of opposite end network element of the sign of the described non-gateway network element that non-gateway network element sends and described non-gateway network element.IP address assignment unit 52 is used for when Gateway Network Element receives the IP address request of described non-gateway network element transmission, according to the described non-gateway network element allocation manager of being designated of described non-gateway network element IP address, simultaneously also will be according to described correspondence relationship information, be the port assignment Port IP address of the described non-gateway network element that needs the distributing IP address.IP address transmitting element 53 is used for sending IP address allocated to described non-gateway network element.Wherein, described Gateway Network Element is according to the described non-gateway network element allocation manager of being designated of described non-gateway network element IP address, and according to described correspondence relationship information, is the port assignment Port IP address of the described non-gateway network element that needs the distributing IP address.
The distribution method of the network address that the embodiment of the invention provides and device, send Gateway Network Element to by information with the sign of the corresponding port of the sign of the sign of non-gateway network element, port and opposite end network element, make Gateway Network Element obtain the topological structure of non-gateway network element, thereby realized function for non-gateway network element allocation manager IP address and a plurality of Port IP address.
Embodiment 2:
The embodiment of the invention provides a kind of distribution method of the network address, as shown in Figure 6, said method comprising the steps of:
601, non-gateway network element obtains the sign of the opposite end network element that links to each other with described non-gateway network element, and the sign of the corresponding port of described opposite end network element.
Before this step, at first need to finish the configuration of Gateway Network Element, comprise the public network IP address of h.323-configured gateway network element, be configured to the default route of NM network management server etc.
602, set up the correspondence relationship information of port with the corresponding port of described opposite end network element of described non-gateway network element.
After described non-gateway network element gets access to the sign of corresponding port of the sign of described opposite end network element, the opposite end network element that links to each other with this machine, the correspondence relationship information between the port of setting up described non-gateway network element and the corresponding port of described opposite end network element.For instance, for non-gateway network element NE1, received the message that opposite end network element NE2 sends, thereby recognized the NE2 that is designated of opposite end network element, known that simultaneously NE2 has sent to described message by port PO RT2 the port PO RT1 of NE1.Then non-gateway network element NE1 sets up the correspondence relationship information of sign PORT2 of the port of the sign NE2 of the sign PORT1 of local terminal port and opposite end network element and opposite end.
603, sign and the described correspondence relationship information with described non-gateway network element sends to Gateway Network Element.
When described non-gateway network element and described Gateway Network Element are direct-connected, the sign and the described correspondence relationship information of described non-gateway network element directly is sent to Gateway Network Element; When described non-gateway network element not with described Gateway Network Element when direct-connected, the sign of described non-gateway network element and described correspondence relationship information at first send to higher level's non-gateway network element, and send to described Gateway Network Element by higher level's network element.
604, described Gateway Network Element receives the correspondence relationship information of port with the corresponding port of opposite end network element of the sign of the described non-gateway network element that non-gateway network element sends and described non-gateway network element.
605, described non-gateway network element sends the IP address request to described Gateway Network Element.
When 606, described Gateway Network Element receives described IP address request, be described non-gateway network element allocation manager IP address, and be the port assignment Port IP address of described non-gateway network element.
Specifically, after described Gateway Network Element is received described IP address request, according to the sign of the described non-gateway network element of before the IP address request, receiving, for described non-gateway network element distributes a management ip address; Simultaneously, according to the described correspondence relationship information of receiving, described Gateway Network Element confirms which port of described non-gateway network element has annexation with the corresponding port of opposite end network element, and all are had the port assignment Port IP address of annexation.For the port of the described non-gateway network element that does not have the opposite end network element, can not distribute the Port IP address.
The function of IP address assignment is realized by IP address assignment server such as Dynamic Host Configuration Protocol server that usually in the practical application, described IP address assignment server often is integrated in the Gateway Network Element.Certainly, described IP address assignment server also can separate deployment with described Gateway Network Element.Under the situation of separately disposing, described IP address request is received and sends to described IP address assignment server by Gateway Network Element; Described IP address assignment server sends to described non-gateway network element with IP address allocated via described Gateway Network Element.
607, described Gateway Network Element sends IP address allocated to described non-gateway network element.
Optionally, described Gateway Network Element can send the IP address of network management server, the information such as IP address of Gateway Network Element when sending IP address allocated in the lump.
608, receiving described Gateway Network Element is described non-gateway network element IP address allocated.
After receiving described Gateway Network Element IP address allocated, non-gateway network element is given corresponding port with the Port IP address assignment that obtains, and the management ip address that obtains is used for the management of self.Simultaneously, the port definition that described non-gateway network element will receive described Gateway Network Element IP address allocated is a uplink port, is downlink port with other port definitions outside the uplink port.
In addition, after described non-gateway network element obtains the IP address, also will be with self route to higher level's network element registration, and be registered to Gateway Network Element step by step, thus set up complete route path.
609, described non-gateway network element sends network address translation message to described Gateway Network Element.
Described network address translation message comprises the sign of described non-gateway network element and the management ip address of described non-gateway network element.
610, described Gateway Network Element is mapped as unique public network IP addresses corresponding with the management ip address of described non-gateway network element.
According to the network address translation message that the described non-gateway network element that receives sends, described Gateway Network Element is mapped to public network IP address to the private IP address as management ip address of described non-gateway network element.For instance, the sign of the non-gateway network element that Gateway Network Element subordinate connects is respectively NE71, NE72, NE73, the corresponding private IP address as managing I P is respectively IP-S1, IP-S2, IP-S3, then Gateway Network Element public network IP address that each private IP address is mapped to is respectively IP-P1, IP-P2, IP-P3, as shown in Figure 7.By map addresses, can carry out the transmitting-receiving of IP message between network management server and the described non-gateway network element.
Non-gateway network element at different levels in the network system are all carried out according to the distribution method of above-mentioned steps 601 to the 610 described network addresss, finally make non-gateway network element obtain corresponding IP address, and to set up with the Gateway Network Element be the route path of root.
A kind of possibility as practical application, the information (sign that comprises the port of the sign of opposite end network element and opposite end network element) that non-gateway network element obtains the opposite end network element that links to each other with described non-gateway network element can be passed through Link Layer Discovery Protocol (LLDP, Link Layer Discovery Protocol) and realize.According to the rule of LLDP agreement, network element can be issued the information of self to the adjacent network element of periphery in home network system.Below with the direct-connected one-level network element of Gateway Network Element and the secondary network element of one-level network element subordinate be example, describe according to Fig. 8.Fig. 8 carries out the signaling diagram that the network address is distributed then for carrying out topology information collection based on Link Layer Discovery Protocol in the embodiment of the invention 2.
S01, Gateway Network Element dispose public network IP, arrive the information of the default route of network management server.
S02, one-level network element receive the LLDP message of opposite end network element.
Carry in the LLDP message of described opposite end network element the opposite end network element sign, be used to send the sign of corresponding port of the LLDP message of opposite end network element.
According to the LLDP message that receives, the one-level network element obtains the sign of opposite end network element, and the sign of the corresponding port of the opposite end network element LLDP message that is used for sending.
Described opposite end network element comprises Gateway Network Element, the secondary network element of one-level network element subordinate, other one-level network elements (being to exist direct physical link to connect between two one-level network elements under the Gateway Network Element) of one-level network element higher level.Network elements at different levels are all sending LLDP message to adjacent network element.
S03, set up the correspondence relationship information of port with the corresponding port of opposite end network element of one-level network element.
After the one-level network element receives the LLDP message of opposite end network element, can construct the topological structure TLV (Type-length-Value) of one-level network element.Describe as the one-level network element with non-gateway network element NE1, if receive the opposite end network element LLDP message one-level network element NE1 port be designated PORT1, send LLDP message the opposite end network element be designated NE2, opposite end network element NE2 is used for the PORT2 that is designated to the port of port PO RT1 transmission LLDP message, then in described topological structure TLV, record the corresponding relation of PORT1, NE2, PORT2.
S04, one-level network element send the 2nd LLDP message to Gateway Network Element.
In described the 2nd LLDP message, added the information of topological structure TLV.
S05, one-level network element send the IP address request to Gateway Network Element.
S06, Gateway Network Element are one-level network element distributing IP address.
After receiving described IP address request, Gateway Network Element is according to the 2nd LLDP message of receiving before the IP address request, be one-level network element allocation manager IP address, simultaneously, according to the information of the TLV in the 2nd LLDP message, for having the port assignment Port IP address of the one-level network element of annexation with the opposite end.
S07, Gateway Network Element send to the one-level network element with IP address allocated.
S08, one-level network element carry out the route registration to Gateway Network Element.
After receiving the Gateway Network Element IP address allocated, the one-level network element is given corresponding port with the Port IP address assignment that obtains, and the management ip address that obtains is used for the management of self.Simultaneously, the port definition that the one-level network element will receive the IP address of Gateway Network Element is a uplink port, is downlink port with other port definitions outside the uplink port.Afterwards, the one-level network element is initiated the route registration to Gateway Network Element, and self routing iinformation is registered to Gateway Network Element.
S09, send network address translation message to Gateway Network Element.
Described network address translation message comprises the sign of port of one-level network element and the private IP address as management ip address of one-level network element.
S10, Gateway Network Element carry out network address mapping.
After receiving described network address translation message, Gateway Network Element is that the private IP address that is used for management ip address of one-level network element is carried out map addresses, corresponds to public network IP address.By public network IP address, the one-level network element can and Gateway Network Element higher level's network management server between carry out the mutual of IP datagram literary composition.
S11, one-level network element send the network topological information of secondary network element to Gateway Network Element.
Above-mentioned S01 to S10 has described the one-level network element and has obtained the whole flow process of IP address; In addition, S11 has also described the transmission of one-level network element to the network topological information of secondary network element.After the secondary network element is collected the information of opposite end network element by the LLDP agreement, also can construct one the 2nd LLDP message the self networks topology information is sent to periphery.It should be noted that, described the 2nd LLDP message is to be the agreement of the link layer of foundation with the LLDP agreement, the message of IP layer is handled and be converted to the 2nd LLDP message that higher level's non-gateway network element need generate the non-gateway network element of subordinate, could transmit to the higher level then, and arrive Gateway Network Element step by step.Concrete, after the one-level network element is received the 2nd LLDP message of secondary network element, the network topological information of the secondary network element that gets access to is reloaded the message of an IP layer, then this message is sent to Gateway Network Element.
For the network element of secondary network element, secondary network element subordinate, the process that it obtains the IP address, carry out the process of network address mapping and S02 to S11 is similar.
Whether in the distribution method of the described network address of above-mentioned S01 to S11, Gateway Network Element is stored in advance and is used to carry out IP address allocated, and write down each IP address and be assigned with.For instance, stored all private IP address of the 172.168.0.0 network segment in the Gateway Network Element, and be used to distribute.For unappropriated private IP address, address state is unallocated; For the private IP address of distributing to non-gateway network element, address state is revised as and distributes, and preserves the mapping relations of the sign of the sign of the private IP address distributed and corresponding non-gateway network element and port.
The distribution method of the described network address of the embodiment of the invention, in network system the network element of Gateway Network Element subordinate being carried out IP address assignment also needs to abide by the principle: 1, the network segment of the Port IP address of each port of same non-gateway network element can not be overlapping; 2, the Port IP address of the port of local terminal must belong to same network segment mutually with the Port IP address of the port of the opposite end that links to each other.
For satisfying above-mentioned 2 principles, can on described Gateway Network Element, preserve a Zhang Tuo and pounce on information table, as shown in figure 12.In the topology information table of Figure 12, NE_ID preserves on one hurdle the sign of the non-gateway network element of application private IP address, IF_ID is the sign of the port of the non-gateway network element of application IP address, Peer_ID is the sign of the opposite end network element of the non-gateway network element of application IP address, and Peer_IF_ID is with the Peer_IF_ID of delegation and IF_ID the other side's communications ports each other among the sign of port of network element Peer_ID and Figure 13.IP has write down on one hurdle the Port IP address of distributing for each IF_ID, the link layer address of L2_Add one hurdle record network element NE_ID.According to the distribution method of the described network address of the embodiment of the invention, after carrying out abovementioned steps S04, Gateway Network Element is received the 2nd LLDP message.Gateway Network Element will carry out record from the information topology information table of the 2nd LLDP message extraction, distribute and IF_ID corresponding port IP address then.When carrying out the Port IP address assignment, by inquiry topology information table, can avoid each port of same NE_ID to be assigned with the overlapping Port IP address of the network segment, guarantee that simultaneously the Port IP address of two direct-connected ports is in the same network segment.
The distribution method of the network address that the embodiment of the invention provides, send Gateway Network Element to by information with the sign of the corresponding port of the sign of the sign of non-gateway network element, port and opposite end network element, make Gateway Network Element obtain the topological structure of non-gateway network element, thereby realized function for non-gateway network element allocation manager IP address and a plurality of Port IP address.Simultaneously, when the distributing IP address, carry out the management of IP address network segment, avoided the problem of the network segment conflict of Port IP address.The distribution method of the network address that the embodiment of the invention provided is carried out at needs under a fairly large number of situation of non-gateway network element of IP address assignment automatically to being connected into the non-gateway network element distributing IP address of network, carries out efficient and is better than artificial situ configuration.
Embodiment 3:
The embodiment of the invention provides a kind of distributor of the network address, and this device can be non-gateway network element, but the embodiment of the invention does not limit this.As shown in Figure 9, described device comprises: opposite end information acquisition unit 91, corresponding relation are set up unit 92, network element topology information transmitting unit 93, IP Address requests unit 94, IP address receiving element 95, address transition message sending unit 96.
Opposite end information acquisition unit 91 is used to obtain the corresponding sign of the opposite end network element that links to each other with described non-gateway network element, and the sign of the corresponding port of described opposite end network element.Corresponding relation is set up unit 92 and is used for sign according to the corresponding port of the sign of described opposite end network element and opposite end network element, sets up the correspondence relationship information of port with the corresponding port of described opposite end network element of described non-gateway network element.Network element topology information transmitting unit 93 is used for the sign of described non-gateway network element and described correspondence relationship information are sent to Gateway Network Element; Wherein, when described non-gateway network element and described Gateway Network Element are indirectly connected, the sign and the described correspondence relationship information of described non-gateway network element sent to higher level's non-gateway network element; Described higher level's non-gateway net is transmitted to described Gateway Network Element with the sign and the described correspondence relationship information of described non-gateway network element, by described higher level's non-gateway net the sign and the described correspondence relationship information of described non-gateway network element is transmitted to described Gateway Network Element.IP Address requests unit 94 is used for sending the IP address request to described Gateway Network Element.It is described non-gateway network element IP address allocated that IP address receiving element 95 is used to receive described Gateway Network Element.Address transition message sending unit 96 is used for sending network address translation message to described Gateway Network Element, and described network address translation message comprises the sign of described non-gateway network element and the private IP address as management ip address of described non-gateway network element.
The embodiment of the invention also provides a kind of distributor of the network address, and this device can be Gateway Network Element, but the embodiment of the invention does not limit this; As shown in figure 10, this device comprises:
Net element information receiving element 1001, IP address assignment unit 1002, IP address transmitting element 1003.
Net element information receiving element 1001 is used to receive the correspondence relationship information of port with the corresponding port of opposite end network element of the sign of described non-gateway network element, described non-gateway network element.IP address assignment unit 1002 is used for when Gateway Network Element receives the IP address request of described non-gateway network element transmission, according to the described non-gateway network element allocation manager of being designated of described non-gateway network element IP address, and, be the port assignment Port IP address of the described non-gateway network element that needs the distributing IP address according to described correspondence relationship information.IP address transmitting element 1003 is used for sending IP address allocated to described non-gateway network element.
Wherein said IP address assignment unit 1002 comprises: port is confirmed module 10021, IP distribution module 10022.
Port confirms that module 10021 is used for confirming according to described correspondence relationship information the port of the described non-gateway network element of needs distributing IP address; IP distribution module 10022 is used to the described port assignment Port IP address that needs the described non-gateway network element of distributing IP address.
Further, as shown in figure 11, described device also comprises: address mapping unit 1004, be used for the network address translation message that sends according to the described non-gateway network element that receives, the private IP address as management ip address of the port of non-gateway network element is mapped as unique public network IP addresses corresponding.
As a kind of possibility of practical application, the opposite end information acquisition unit of non-gateway network element can realize obtaining the sign of the corresponding port of the sign of the opposite end network element that links to each other with described non-gateway network element and the opposite end network element that links to each other with described non-gateway network element by the LLDP agreement.With the LLDP agreement is foundation, obtains the topology information of non-gateway network element and applies for that the specific descriptions of IP address can be with reference to the S01 to S11 of previous embodiment 2.
The function of IP address assignment is realized by IP address assignment server such as Dynamic Host Configuration Protocol server that usually in the practical application, described IP address assignment server often is integrated in the Gateway Network Element.Certainly, described IP address assignment server also can separate deployment with described Gateway Network Element.Under the situation of separately disposing, described IP address request is received and sends to described IP address assignment server by Gateway Network Element; Described IP address assignment server sends to described non-gateway network element with IP address allocated via described Gateway Network Element.
The distributor of the described network address of the embodiment of the invention, in network system the network element of Gateway Network Element subordinate being carried out IP address assignment also needs to abide by the principle: 1, the network segment of the Port IP address of each port of same non-gateway network element can not be overlapping; 2, the Port IP address of the port of local terminal must belong to same network segment mutually with the Port IP address of the port of the opposite end that links to each other.Can be for satisfy the setting that above 2 principles carry out on Gateway Network Element referring to the associated description among the embodiment 2.
On the basis of distributor in embodiments of the present invention, the embodiment of the invention also provides a kind of distribution system of the network address, described distribution system comprises Gateway Network Element and at least one non-gateway network element, wherein, Gateway Network Element can be the device shown in Figure 10 or 11, non-gateway network element can be a device as shown in Figure 9, and Gateway Network Element and non-gateway network element acting in conjunction realize each method in the embodiment of the invention.
The distributor of the network address that the embodiment of the invention provides and system, send the information of the sign of the corresponding port of the sign of the sign of non-gateway network element, port and opposite end network element to Gateway Network Element so that Gateway Network Element obtains the topological structure of non-gateway network element, and realized function on this basis for non-gateway network element allocation manager IP address and a plurality of Port IP address.Simultaneously, when the distributing IP address, carry out the management of IP address network segment, avoided the problem of the network segment conflict of Port IP address.Distributor that the embodiment of the invention provides and system can carry out IP address assignment, the inconvenience of avoiding artificial field adjustable to bring automatically to the non-gateway network element of the system of being connected into.
Through the above description of the embodiments, the those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential common hardware, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium that can read, floppy disk as computer, hard disk or CD etc., comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (19)
1. the distribution method of a network address is characterized in that, comprising:
Non-gateway network element obtains the sign of the opposite end network element that links to each other with described non-gateway network element, and the sign of the corresponding port of the opposite end network element that links to each other with described non-gateway network element;
According to the sign of the corresponding port of the sign of described opposite end network element and opposite end network element, set up the correspondence relationship information of port with the corresponding port of described opposite end network element of described non-gateway network element;
The sign and the described correspondence relationship information of described non-gateway network element are sent to Gateway Network Element;
Send the IP address request to described Gateway Network Element, so that described Gateway Network Element is that described non-gateway network element distributes corresponding IP address according to the sign and the described correspondence relationship information of described non-gateway network element;
Receiving described Gateway Network Element is described non-gateway network element IP address allocated, and described IP address comprises that the management ip address of described non-gateway network element correspondence and described non-gateway network element comprise port corresponding port IP address.
2. method according to claim 1 is characterized in that, when described non-gateway network element and described Gateway Network Element were indirectly connected, described sign and described correspondence relationship information with described non-gateway network element sent to Gateway Network Element and comprise:
Described non-gateway network element sends to higher level's non-gateway network element with the sign and the described correspondence relationship information of described non-gateway network element, by described higher level's non-gateway network element the sign and the described correspondence relationship information of described non-gateway network element is transmitted to described Gateway Network Element.
3. method according to claim 1 and 2 is characterized in that, described sign and described correspondence relationship information with described non-gateway network element sends to Gateway Network Element and comprise:
By Link Layer Discovery Protocol LLDP message the sign and the described correspondence relationship information of described non-gateway network element sent to Gateway Network Element.
4. method according to claim 1 and 2 is characterized in that, described Gateway Network Element is that described non-gateway network element IP address allocated is a private IP address.
5. method according to claim 4 is characterized in that, described method also comprises:
Described non-gateway network element sends network address translation message to described Gateway Network Element, and described network address translation message comprises the sign of described non-gateway network element and the private IP address as management ip address of described non-gateway network element.
6. the distribution method of a network address is characterized in that, comprising:
Gateway Network Element receives the correspondence relationship information of port with the corresponding port of opposite end network element of the sign of the described non-gateway network element that non-gateway network element sends and described non-gateway network element;
When receiving the IP address request of described non-gateway network element transmission, according to the described non-gateway network element allocation manager of being designated of described non-gateway network element IP address, and, be the port assignment Port IP address of the described non-gateway network element that needs the distributing IP address according to described correspondence relationship information;
Send IP address allocated to described non-gateway network element, described IP address comprises that the management ip address of described non-gateway network element correspondence and described non-gateway network element comprise port corresponding port IP address.
7. method according to claim 6 is characterized in that, and is described according to described correspondence relationship information, and the port assignment Port IP address for the described non-gateway network element that needs the distributing IP address comprises:
Confirm the port of the described non-gateway network element of needs distributing IP address according to described correspondence relationship information;
Be the described port assignment Port IP address that needs the described non-gateway network element of distributing IP address.
8. according to claim 6 or 7 described methods, it is characterized in that described Gateway Network Element is that described non-gateway network element IP address allocated is a private IP address.
9. method according to claim 8 is characterized in that, described method also comprises:
The network address translation message that sends according to the described non-gateway network element that receives is mapped as unique public network IP addresses corresponding with the private IP address as management ip address of non-gateway network element.
10. the distributor of a network address is characterized in that, comprising:
The opposite end information acquisition unit is used to obtain the sign of the opposite end network element that links to each other with non-gateway network element, and the sign of the corresponding port of the opposite end network element that links to each other with described non-gateway network element;
Corresponding relation is set up the unit, is used for the sign according to the corresponding port of the sign of described opposite end network element and opposite end network element, sets up the correspondence relationship information of port with the corresponding port of described opposite end network element of described non-gateway network element;
The network element topology information transmitting unit is used for the sign and the described correspondence relationship information of described non-gateway network element are sent to Gateway Network Element;
IP Address requests unit is used for sending the IP address request to described Gateway Network Element, so that described Gateway Network Element is that described non-gateway network element distributes corresponding IP address according to the sign and the described correspondence relationship information of described non-gateway network element;
IP address receiving element, being used to receive described Gateway Network Element is described non-gateway network element IP address allocated, described IP address comprises that the management ip address of described non-gateway network element correspondence and described non-gateway network element comprise port corresponding port IP address.
11. device according to claim 10, it is characterized in that, described network element topology information transmitting unit also is used for, when described non-gateway network element and described Gateway Network Element are indirectly connected, the sign and the described correspondence relationship information of described non-gateway network element are sent to higher level's non-gateway network element, the sign and the described correspondence relationship information of described non-gateway network element is transmitted to described Gateway Network Element by described higher level's non-gateway net.
12., it is characterized in that described sign and described correspondence relationship information with described non-gateway network element sends to Gateway Network Element and comprise according to claim 10 or 11 described devices:
By Link Layer Discovery Protocol LLDP message the sign and the described correspondence relationship information of described non-gateway network element sent to Gateway Network Element.
13., it is characterized in that described Gateway Network Element is that described non-gateway network element IP address allocated is a private IP address according to claim 10 or 11 described devices.
14. device according to claim 13 is characterized in that, described device also comprises:
The address transition message sending unit is used for sending network address translation message to described Gateway Network Element, and described network address translation message comprises the sign of described non-gateway network element and the private IP address as management ip address of described non-gateway network element.
15. the distributor of a network address is characterized in that, comprising:
The net element information receiving element is used to receive the correspondence relationship information of port with the corresponding port of opposite end network element of the sign of the described non-gateway network element that non-gateway network element sends and described non-gateway network element;
The IP address assignment unit, be used for when Gateway Network Element receives the IP address request of described non-gateway network element transmission, according to the described non-gateway network element allocation manager of being designated of described non-gateway network element IP address, and, be the port assignment Port IP address of the described non-gateway network element that needs the distributing IP address according to described correspondence relationship information;
IP address transmitting element is used for sending IP address allocated to described non-gateway network element, and described IP address comprises that the management ip address of described non-gateway network element correspondence and described non-gateway network element comprise port corresponding port IP address.
16. device according to claim 15 is characterized in that, described IP address assignment unit comprises:
Port is confirmed module, is used for confirming according to described correspondence relationship information the port of the described non-gateway network element of needs distributing IP address;
The IP distribution module is used to the described port assignment Port IP address that needs the described non-gateway network element of distributing IP address.
17., it is characterized in that described Gateway Network Element is that described non-gateway network element IP address allocated is a private IP address according to claim 15 or 16 described devices.
18. device according to claim 17 is characterized in that, described device also comprises:
Address mapping unit is used for the network address translation message that sends according to the described non-gateway network element that receives, and the private IP address as management ip address of the port of non-gateway network element is mapped as unique public network IP addresses corresponding.
19. the distribution system of a network address, it is characterized in that, comprise non-gateway network element and Gateway Network Element, wherein, described non-gateway network element comprises each described device of claim 10-14, and described Gateway Network Element comprises each described device of claim 15-18.
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| CN2011100808715A CN102164188A (en) | 2011-03-31 | 2011-03-31 | Network address allocation method, device and system |
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Application publication date: 20110824 |