CN103023798A - Method for assigning virtual local area network and network element - Google Patents
Method for assigning virtual local area network and network element Download PDFInfo
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- CN103023798A CN103023798A CN2011102941171A CN201110294117A CN103023798A CN 103023798 A CN103023798 A CN 103023798A CN 2011102941171 A CN2011102941171 A CN 2011102941171A CN 201110294117 A CN201110294117 A CN 201110294117A CN 103023798 A CN103023798 A CN 103023798A
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Abstract
The embodiment of the invention discloses a method for assigning a virtual local area network and a network element. The method and the network element are applied to a TRILL (transparent interconnection of lots of links) area hierarchical networking. The method comprises the following steps of: running the network element of a TRILL protocol to obtain domain information of each TRILL domain; determining whether domain state of each TRILL domain changes according to the obtained domain information; when the domain state of at least one TRILL area changes, determining whether the network element is a domain assigned access network element of the TRILL domain hierarchical networking; and if so, assigning VLAN (virtual local area network) for each TRILL domain so that each TRILL domain is responsible for forwarding the different VLANs. By adopting the method and the network element, the virtual local area networks can be shared by a plurality of TRILL domains to better realize load balancing.
Description
Technical field
The present invention relates to networking technology area, relate in particular to a kind of method and network element of assigning VLAN.
Background technology
Multichain connects translucent interconnected (English full name: Transparent Interconnection of Lots of Links, hereinafter to be referred as: TRILL) be mainly used to overcome Spanning-Tree Protocol (English full name: Spanning Tree Protocol, hereinafter to be referred as the deficiency that STP) exists on scale and aspect the topological reunion.
The network element of operation TRILL agreement is called RBridge (being called for short RB).The routing protocol of RB by the Intermediate System-to-Intermediate System of operation expansion (English full name: Intermediate System to Intermediate System Routing Protocol, hereinafter to be referred as: IS-IS) calculate route.At present, IETF has proposed the draft of the layering TRILL network architecture, in this draft, can carry out the layering networking, realizes TRILL territory layering networking TRILL Multilevel.
New TRILL Multilevel and the existing TRILL network of introducing, different to domain addresses (Area address) regulation.In existing single domain TRILL network, IS-IS Level1 is only supported in networking, so the Area address to Intermediate System to Intermediate System among the TRILL is defined as zero.And in the new TRILL Multilevel that introduces, a plurality of different IS-IS Level1 territories can appear, and also be a plurality of TRILL territories, so draft specifies Area address is nonzero value, different values is used for indicating different TRILL territories.No matter be the new TRILLMultilevel that introduces, or existing TRILL agreement, all can be by being used for foundation and safeguarding that the HELLO message of adjacent sites Relations Among carries out relationship safeguard.
Concrete, as shown in Figure 1, a kind of structure that is the layering networking of TRILL territory forms schematic diagram, comprising be positioned at user's side, domain addresses (area address) is two one-levels (level 1) TRILL territory of 101 and 102, two one-level TRILL territories are connected to other one-level TRILL non-indigenous territory (not shown)s by edge RB and secondary (level 2) TRILL territory.Domain addresses is to comprise RB1, RB4 in 101 the TRILL territory, and domain addresses is to comprise RB2, RB3 in 102 the TRILL territory, and domain addresses is that 101 TRILL territory and domain addresses are that 102 TRILL territory interconnects by switch.Main frame (host, not shown) message is that message repeating is carried out in two TRILL territories of 101 and 102 by described domain addresses.
In realizing process of the present invention, the inventor finds, in new TRILL layering networking, as a switch such as Bridge Link, after switch accesses two or more different one-level TRILL territories like that simultaneously like Fig. 1, because can not be to a plurality of VLANs (English full name: Virtual Local Area Network between each TRILL territory, hereinafter to be referred as: VLAN) assign the TRILL territory of transmitting this VLAN message, then the message of different VLAN may be transmitted by a plurality of different TRILL territories, for example, VLAN1 among Fig. 1 just can E-Packet from Area address=101 and two TRILL territories of Area address=102 simultaneously, this can cause the message of the VLAN in a plurality of TRILL territory to form loop, broadcasting packet duplicates broadcasting between the territory, and the RB in different TRILL territory can't load sharing etc. problem.
Summary of the invention
Embodiment of the invention technical problem to be solved is, method and the network element of assigning VLAN in the layering networking of a kind of TRILL territory are provided, and can carry out between the TRILL territory a plurality of VLANs that are connected to switch being transmitted appointment.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of method of assigning VLAN, be applied in the translucent interconnection of the multilink TRILL territory layering networking, comprise a plurality of one-level TRILL territory in the layering networking of described TRILL territory, comprise the network element of at least one operation TRILL agreement in each one-level TRILL territory, the method comprises:
The network element of operation TRILL agreement obtains the domain information in described each TRILL territory;
According to the described domain information that obtains, judge whether the territory state in each TRILL territory changes;
When the territory at least one TRILL territory state changes, judge self whether to be that access network element is assigned in territory in the network of described TRILL territory layering networking;
If, assign virtual LAN VLAN for described each TRILL territory, make each TRILL territory be responsible for transmitting the message of different VLAN.
Correspondingly, the embodiment of the invention also provides a kind of network element of the TRILL of operation agreement, the network element of this operation TRILL agreement is arranged in the one-level TRILL territory in the translucent interconnection of the multilink TRILL territory layering networking, wherein, comprise a plurality of one-level TRILL territory in the layering networking of described TRILL territory, described network element comprises:
Acquisition module is used for obtaining the domain information in described each TRILL territory;
Condition judgment module for the domain information that obtains according to described acquisition module, judges whether the territory state in each TRILL territory changes;
Determination module when being used for the result that judges when described condition judgment module and changing for the territory state at least one TRILL territory, judges self whether to be territory appointment access network element in the network of described TRILL territory layering networking;
Assignment module is used for judging when assigning access network element as the territory at described determination module, assigns virtual LAN VLAN for described each TRILL territory, makes each TRILL territory be responsible for transmitting different VLAN messages.
Implement the embodiment of the invention, have following beneficial effect:
By in the layering networking of TRILL territory, determine and be used to VLAN to assign the territory in TRILL territory to assign access network element, unified for assigning VLAN in each the TRILL territory in the network, make a plurality of TRILL territory be responsible for transmitting respectively the message of different VLANs, realize preferably load balancing, and the message that can avoid the VLAN in the TRILL territory occurring forms loop easily, and broadcasting packet may duplicate the problems such as broadcasting between the territory.
Description of drawings
Fig. 1 is that a kind of structure of TRILL territory layering networking forms schematic diagram;
Fig. 2 assigns the first example structure of the network element of VLAN to form schematic diagram in the layering networking of TRILL of the present invention territory;
Fig. 3 assigns the second example structure of the network element of VLAN to form schematic diagram in the layering networking of TRILL of the present invention territory;
Fig. 4 is the first embodiment schematic flow sheet of assigning the method for VLAN in the layering networking of TRILL of the present invention territory;
Fig. 5 assigns the structure of the system of VLAN to form schematic diagram in the layering networking of TRILL territory;
Fig. 6 is the second embodiment schematic flow sheet of assigning the method for VLAN in the layering networking of TRILL of the present invention territory.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, 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 obtains under the creative work prerequisite.
Seeing also Fig. 2, is that the first example structure of the network element of operation TRILL agreement of the present invention forms schematic diagram.In embodiments of the present invention, the network element RB of this operation TRILL agreement is arranged in the one-level TRILL territory in the layering networking of TRILL territory, wherein, comprise a plurality of one-level TRILL territory in the layering networking of described TRILL territory, the network element of described operation TRILL agreement at first determines self whether to be to be used in the network of described TRILL territory layering networking each TRILL territory to assign the territory of virtual LAN VLAN to assign access network element when the territory state changes, if, then carry out assigning the job of VLAN, the identical algorithm of all RB operations in the network of described TRILL territory layering networking, each RB all determines oneself when the territory state changes whether access network element is assigned in the territory.The network element of the described operation TRILL agreement in the present embodiment comprises:
Acquisition module 1 is used for obtaining the domain information in described each TRILL territory.
Under stable state between the territory, the network element that respectively moves the TRILL agreement in the network of TRILL territory layering networking can send the HELLO message to the TRILL neighbours' network element of itself, and the HELLO message of reception neighbours network element transmission, the information that the HELLO message carries is transmitted layer by layer, for example, RB1-＞RB2-＞RB3 is followed successively by the TRILL neighborhood, the information that RB2 wherein carries in can the HELLO message with the RB1 that receives is added on the HELLO message that sends to RB3, and RB3 can know entrained domain information in the HELLO message of RB1, RB2 by RB2.That is to say that the RB of the whole network finally knows the information of every other RB.
Carry the domain information in corresponding RB TRILL of living in territory in the described HELLO message, wherein, described domain information comprises: the domain name in TRILL territory, the sign of the network element of the operation TRILL agreement that comprises in the TRILL territory, territory in the current TRILL territory represents network element ID, and the access network element sign is assigned in the territory in current TRILL territory.
According to the HELLO message that receives, this network element can obtain a territory state that comprises the domain information in each TRILL territory in the network thus, such as the territory state table in the table 1, TRILL territory in network changes, as increasing or when reducing by a TRILL territory, described condition judgment module 2 compares with the last territory state table that obtains according to the territory state table that the HELLO message that receives obtains, can judge the territory state variation has occured, just can notify described determination module 3 to judge whether this network element self is that access network element is assigned in the territory by the mode such as send a notification message.Network enters the territory status recognition.
Table 1:
Certainly, also can be by the corresponding notice of configuration configuration information in the switch in network, change in the TRILL territory being used for, when increasing or reducing such as the TRILL territory, switch can detect this variation, and the RB in the network sends announcement information to notify these RB territory states to change, and makes each RB judge whether this network element self is that access network element is assigned in the territory.
Described determination module 3 judge self whether be the territory assign access network element judgment mode can for: judge that whether the residing TRILL of this network element territory is the highest territory of configuration after the territory state changes, wherein, the highest TRILL territory of described configuration refers to: the highest TRILL territory of territory priority of unique existence in each TRILL territory after the territory state changes, perhaps refer to: the TRILL territory that territory priority is the highest and domain name is maximum in each TRILL territory after the territory state changes, if not, then finish to judge;
If, continue then to judge that whether this network element is to dispose the highest network element in self residing TRILL territory, if, then determine from assigning access network element as the territory, if not, then judge and finish, wherein, the highest network element of described configuration refers to: the highest network element of network element priority of unique existence in the TRILL territory perhaps refers to: the network element that network element priority is the highest and MAC Address is maximum in the TRILL territory.
Described determination module 3 judge self whether be the territory assign access network element judgment mode also can for: judge that whether this network element is to dispose the highest network element in self residing TRILL territory; Wherein, the highest network element of described configuration refers to: the highest network element of network element priority of unique existence in the TRILL territory perhaps refers to: the network element that network element priority is the highest and MAC Address is maximum in the TRILL territory, if not, then finish to judge;
If, continue then to judge whether the residing TRILL of this network element territory is that in each TRILL territory the highest TRILL territory of configuration after the territory state changed, if, then determine certainly to assign access network element as the territory, otherwise, judge and finish; Wherein, the highest TRILL territory of described configuration refers to: the highest TRILL territory of territory priority of unique existence in each TRILL territory after the territory state changes perhaps refers to: the TRILL territory that territory priority is the highest and domain name is maximum in each TRILL territory after the territory state changes.
Wherein, each RB in the network has carried the sign of this RB, the territory priority in its TRILL of living in territory, the information such as domain name, the network element priority in its residing TRILL territory and MAC Address in its TRILL of living in territory in the HELLO of its transmission message, described determination module 3 is judgements of carrying out for foundation according to these information in each the HELLO message that receives.
After the status recognition certain time of territory, namely enter the territory and assign state.
When described determination module 3 judgements have determined that this network element is territory appointment access network element, notify described assignment module 4 by the inside story of intermodule, described assignment module 4 is that virtual LAN VLAN is assigned in described each TRILL territory, makes each TRILL territory be responsible for transmitting different VLAN.
Described assignment module 4 can perhaps be assigned according to the address of VLAN according to the service identifiers of VLAN, and perhaps the mode such as assigned at random is assigned.
The mode that different VLAN is responsible for transmitting in each TRILL territory can comprise: the territory of determining in the TRILL territory represents network element, and the territory represents the VLAN that network element will be assigned to this TRILL territory and redesignates to each RB in the TRILL territory.Each RB judges self whether to be that the mode that territory in self TRILL of living in territory represents network element can be: judge by the network element priority of carrying in the HELLO message, network element priority is the highest is the territory representative in this TRILL territory, carries out assigning the job of VLAN in this TRILL territory; If what network element priority was the highest comprises two or more, then again judge in two or more the highest network elements, the size of MAC Address, the network element of MAC Address maximum is defined as the territory and represents network element, carries out assigning the job of VLAN in this TRILL territory.The territory represents the VLAN that network element assigns access network element to be assigned to this TRILL territory in the territory and redesignates to all network elements that comprise himself in this TRILL territory.
Certainly, assign access network element that VLAN is assigned to each TRILL territory in the territory, the RB in each TRILL territory also can pass through other rules, such as rules such as assigned at random forwardings, transmits the VLAN that is assigned to this TRILL territory.
In addition, assign the RB of access network element when assigning VLAN as the territory, can carry out VLAN according to the original configuration of RB in each TRILL territory and each the TRILL territory and assign.
The territory represents network element assigned VLAN after, network enters stable state between the territory again.Send new HELLO message between the RB.
Description by above-described embodiment as can be known, the present invention has the following advantages:
By in the layering networking of TRILL territory, determine and be used to VLAN to assign the territory in TRILL territory to assign access network element, unified for assigning VLAN in each the TRILL territory in the network, make a plurality of TRILL territory be responsible for transmitting respectively the message of different VLANs, realize preferably load balancing, and the message that can avoid the VLAN in the TRILL territory occurring forms loop easily, and broadcasting packet may duplicate the problems such as broadcasting between the territory.
Seeing also Fig. 3, is that the second example structure of the network element of operation TRILL agreement of the present invention forms schematic diagram again.The network element of the described operation TRILL agreement in the present embodiment comprises acquisition module 1, condition judgment module 2, determination module 3 and the assignment module 4 among above-mentioned the first embodiment.
Further, in the present embodiment, the described acquisition module 1 in the network element of described operation TRILL agreement comprises: receiving element 11 and acquiring unit 12.
Described receiving element 11 is used for receiving the HELLO message that neighbours' network element sends;
Described acquiring unit 12, be used for the domain information according to each TRILL territory of described HELLO Receive message, carry the domain information in each TRILL territory in the described HELLO message, wherein, described domain information comprises: the domain name in TRILL territory, the sign of the network element of the operation TRILL agreement that comprises in the TRILL territory, the territory in the current TRILL territory represents network element ID, and the access network element sign is assigned in current territory.
Described acquiring unit 12 obtains is HELLO message under stable state between the territory, and it obtains the domain information that carries each TRILL territory in the described HELLO message by corresponding packet parsing operation.Whether condition judgment module 2 is the domain informations in each TRILL territory of carrying in the HELLO message that gets access to according to described acquiring unit 12, judge whether to increase or reduce the territory state of judging each TRILL territory in the TRILL territory and change; Or the domain information in each TRILL territory of carrying in the HELLO message that gets access to according to described acquiring unit 12, judge whether to exist the territory in certain TRILL territory to represent network element failure or leave to judge whether the territory state in each TRILL territory changes.
Further, the described determination module 3 in the present embodiment comprises: the first determining unit 31 and the second determining unit 32.When described condition judgment module 2 judged that the territory state at least one TRILL territory changes, determination module 3 judged by the first determining unit 31 and the second determining unit 32 whether network element self is that access network element is assigned in the territory.
Described the first determining unit 31 is used for when the territory at least one TRILL territory state changes, and judges whether the residing TRILL of this network element territory is that in each TRILL territory the highest TRILL territory of configuration after the territory state changed; Wherein, the highest TRILL territory of described configuration refers to: the highest TRILL territory of territory priority of unique existence in each TRILL territory after the territory state changes perhaps refers to: the TRILL territory that territory priority is the highest and domain name is maximum in each TRILL territory after the territory state changes.
Described the second determining unit 32 is used in the judged result of described the first determination module 31 when being, judges that whether this network element is the highest network element of configuration in self residing TRILL territory, if then determine certainly as territory appointment access network element; Wherein, the highest network element of described configuration refers to: the highest network element of network element priority of unique existence in the TRILL territory perhaps refers to: the network element that network element priority is the highest and MAC Address is maximum in the TRILL territory.
Concrete, the judgment rule of described the first determining unit 31 is:
Judge that whether the residing TRILL of this network element self territory is the territory state the highest territory of priority, territory in each TRILL territory in the rear network that changes.
If the territory priority in self residing TRILL territory judges for the highest whether priority the highest TRILL territory in territory comprises two or more.
If only comprise one, then described the first determining unit 31 determines that the residing TRILL of this network element territories are that the territory state changes that in each TRILL territory the highest TRILL territory of configuration in the rear network;
If comprise two or more, then further judge the size of the domain name in the TRILL territory that these two or more territory priority are the highest, if the domain name in the residing TRILL of this network element territory is maximum, then described the first determining unit 31 determines that the residing TRILL of this network element territories are that the territory state changes that in each TRILL territory the highest TRILL territory of configuration in the rear network.
The judgment rule of described the second determining unit 32 is:
When described the first determining unit 31 is determined the residing TRILL of this network element territories for the highest TRILL territory of configuration, judge that whether this network element is the highest network element of network element priority in self residing TRILL territory.
If this network element is the highest network element of network element priority in self residing TRILL territory, judge whether the highest network element of network element priority comprises two or more in the residing TRILL territory; Otherwise, finish.
If only comprise one, then described the second determining unit 32 determines that these network elements be the highest network element of configuration in self residing TRILL territory, and definite this network element is territory appointment access network element;
If comprise two or more, then further judge the size of the MAC Address in the TRILL territory that these two or more network element priority are the highest, if the MAC Address of this network element is maximum, then described the second determining unit 32 determines that these network elements be the highest network element of configuration in self residing TRILL territory, and definite this network element is territory appointment access network element.
In the present embodiment, each RB also can judge that whether this network element is that territory in self TRILL of living in territory represents network element by described determination module 3 after the new territory of determining assigns access network element be each TRILL territory appointment virtual LAN VLAN; 4 of described assignment module, redesignate the VLAN that is assigned to this TRILL territory to each network element in this TRILL territory and carry out message repeating when being in the judged result of described determination module 3; As described in Figure 3, the network element of described operation TRILL agreement also comprises forwarding module 5, and described forwarding module 5 is used for transmitting the message of the VLAN that is assigned to self.And, then do not carry out and assign operation when the determination result is NO at described determination module 3, directly transmitted the message of the VLAN that is assigned to self by forwarding module 5.
Further, the described network element of present embodiment also comprises: statistical module 6.
Described statistical module 6, for the territory forwarding information in statistics each TRILL territory after the territory state changes, described territory forwarding information comprises: the sign of the VLAN that each TRILL territory can be transmitted.
When described statistical module 6 determines that in condition judgment module 2 the territory state changes, add up the territory forwarding information in each TRILL territory, so that follow-up definite after assigning access network element as the territory, described assignment module 4 can identify each VLAN and be assigned to corresponding TRILL territory, realizes preferably the VLAN message repeating.
In addition, in other embodiment, whether described determination module 3 can be the highest network element of configuration by determining first this network element also, then determine whether the residing TRILL of this network element territory is the highest TRILL territory of configuration, determine that take this whether self is as territory appointment access network element, concrete, described determination module 3 can comprise: the 3rd determining unit and the 4th determining unit
The 3rd determining unit is used for when the territory at least one TRILL territory state changes, and judges that whether this network element is to dispose the highest network element in self residing TRILL territory; Wherein, the highest network element of described configuration refers to: the highest network element of network element priority of unique existence in the TRILL territory perhaps refers to: the network element that network element priority is the highest and MAC Address is maximum in the TRILL territory;
The 4th determining unit is used in the judged result of described the 3rd determination module judging whether the residing TRILL of this network element territory is that in each TRILL territory the highest TRILL territory of configuration after the territory state changed when being, if then determine from as territory appointment access network element; Wherein, the highest TRILL territory of described configuration refers to: the highest TRILL territory of territory priority of unique existence in each TRILL territory after the territory state changes perhaps refers to: the TRILL territory that territory priority is the highest and domain name is maximum in each TRILL territory after the territory state changes.
Description by above-described embodiment as can be known, the present invention has the following advantages:
By in the layering networking of TRILL territory, determining the territory assigns access network element unified for assigning VLAN in each the TRILL territory in the network, make a plurality of TRILL territory be responsible for transmitting respectively the message of different VLANs, realize preferably load balancing, and the message that can avoid the VLAN in the TRILL territory occurring forms loop easily, and broadcasting packet may duplicate the problems such as broadcasting between the territory.
The below is elaborated to a kind of method of VLAN of assigning of the present invention.
See also Fig. 4, it is the first embodiment schematic flow sheet of the method for appointment VLAN of the present invention, the described method of present embodiment is applied in the translucent interconnection of the multilink TRILL territory layering networking, comprise a plurality of one-level TRILL territory in the layering networking of described TRILL territory, comprise the network element of at least one operation TRILL agreement in each one-level TRILL territory, the method comprises:
S101: the network element of operation TRILL agreement obtains the domain information in described each TRILL territory.
Concrete, under stable state between the territory, the network element that respectively moves the TRILL agreement in the network of TRILL territory layering networking can send the HELLO message to the neighbours' network element of self, and receive the HELLO message that these neighbours' network elements send, the information that the HELLO message carries is transmitted layer by layer, for example, RB1-＞RB2-＞RB3 is followed successively by neighborhood, the HELLO message that RB2 wherein can be added on the information in the HELLO message of the RB1 that receives self sends to RB3, and RB3 can know entrained domain information in the HELLO message of RB1, RB2 by RB2.That is to say that the RB of the whole network finally knows the information of every other RB.
Carry the domain information in corresponding RB TRILL of living in territory in the described HELLO message, wherein, described domain information comprises: the domain name in TRILL territory, the sign of the network element of the operation TRILL agreement that comprises in the TRILL territory, territory in the current TRILL territory represents network element ID, and the access network element sign is assigned in current territory.
S102: the network element of operation TRILL agreement judges according to the described domain information that obtains whether the territory state in each TRILL territory changes.
Concrete, according to the HELLO message that receives, this network element can obtain a territory state that comprises the domain information in each TRILL territory in the network thus, TRILL territory in network changes, during such as the increase of the TRILL territory in the network or minimizing TRILL territory, described S102 compares with the last territory state that obtains according to the territory state that the current HELLO message that receives obtains, and can judge the territory state variation has occured, and carries out S103.Network enters the territory status recognition.
Certainly, also can be by the corresponding notice of configuration configuration information in the switch in network, changing with the TRILL territory being used for, when increasing or reducing such as the TRILL territory, switch can detect this variation, and the RB in the network sends announcement information to notify these RB territory states to change, and makes each RB carry out S103.
S103: when the territory at least one TRILL territory state changed, the network element of operation TRILL agreement judged self whether to be territory appointment access network element in the network of described TRILL territory layering networking.When assigning access network element for the territory, carry out S104, otherwise, finish.
The judgment mode of described S103 can for: judge that whether the residing TRILL of this network element territory is the highest territory of configuration after the territory state changes, wherein, the highest TRILL territory of described configuration refers to: the highest TRILL territory of territory priority of unique existence in each TRILL territory after the territory state changes, perhaps refer to: the TRILL territory that territory priority is the highest and domain name is maximum in each TRILL territory after the territory state changes, if not, then finish to judge;
If, continue then to judge that whether this network element is to dispose the highest network element in self residing TRILL territory, if, then determine from assigning access network element as the territory, if not, then judge and finish, wherein, the highest network element of described configuration refers to: the highest network element of network element priority of unique existence in the TRILL territory perhaps refers to: the network element that network element priority is the highest and MAC Address is maximum in the TRILL territory.
The judgment mode of described S103 also can for: judge that whether this network element is the highest network element of configuration in self residing TRILL territory; Wherein, the highest network element of described configuration refers to: the highest network element of network element priority of unique existence in the TRILL territory perhaps refers to: the network element that network element priority is the highest and MAC Address is maximum in the TRILL territory, if not, then finish to judge;
If, continue then to judge whether the residing TRILL of this network element territory is that in each TRILL territory the highest TRILL territory of configuration after the territory state changed, if, then determine certainly to assign access network element as the territory, otherwise, judge and finish; Wherein, the highest TRILL territory of described configuration refers to: the highest TRILL territory of territory priority of unique existence in each TRILL territory after the territory state changes perhaps refers to: the TRILL territory that territory priority is the highest and domain name is maximum in each TRILL territory after the territory state changes.
Wherein, each RB in the network has carried the sign of this RB, the territory priority in its TRILL of living in territory, the information such as domain name, the network element priority in its residing TRILL territory and MAC Address in its TRILL of living in territory in the HELLO of its transmission message, described S103 is the judgement of carrying out for foundation according to these information in each the HELLO message that receives.
After the status recognition certain time of territory, namely enter the territory and assign state.
S104: the network element of operation TRILL agreement is that virtual LAN VLAN is assigned in described each TRILL territory, makes each TRILL territory be responsible for transmitting the message of different VLAN.
Each TRILL territory can again be carried out VLAN and be assigned: the territory of determining represents network element in TRILL the territory in, and the territory represents the VLAN that network element will be assigned to this TRILL territory and redesignates to each RB forwarding in the TRILL territory.Each RB judges self whether to be that the mode that territory in self TRILL of living in territory represents network element can be: judge by the network element priority of carrying in the HELLO message, network element priority is the highest is the territory representative in this TRILL territory, carries out assigning the job of VLAN in this TRILL territory; If what network element priority was the highest comprises two or more, then again judge in two or more the highest network elements, the size of MAC Address, the maximum territory that is defined as represents network element, carries out assigning the job of VLAN in this TRILL territory.The territory represents the VLAN that network element assigns access network element to be assigned to this TRILL territory in the territory and redesignates to all network elements that comprise himself in this TRILL territory.
Certainly, assign access network element that VLAN is assigned to each TRILL territory in the territory, the RB in each TRILL territory also can pass through other rules, such as rules such as assigned at random forwardings, transmits the message of the VLAN that is assigned to this TRILL territory.
In addition, assign the RB of access network element when assigning VLAN as the territory, can carry out the VLAN configuration according to the original configuration of RB in each TRILL territory and each the TRILL territory.
The territory represents network element assigned VLAN after, network enters stable state between the territory again.Send new HELLO message between the RB.
The system that the below assigns VLAN in the TRILL territory layering networking shown in Figure 5 describes assigning the method for VLAN in the above-mentioned TRILL territory layering networking as example.
In this example, VLAN 101-500 need to be assigned to two one-levels (level 1) TRILL territory, be TRILL territory 501 and TRILL territory 502, the domain addresses in TRILL territory 501 (that is to say domain name) Area address=102 comprises network element: RB1, RB3, RB5 in the TRILL territory.TRILL territory 501 is connected to the level2 network by an edge RB.The domain addresses Area address=101 in TRILL territory 502 comprises network element: RB2, RB4, RB6 in the TRILL territory.TRILL territory 502 is connected to the level2 network by an edge RB.Wherein, describe as an example of RB1 example, RB3, RB5 and RB2, RB4, RB6 carry out identical step.
S1:RB1 receives the HELLO message that neighbours RB transmits, and according to the domain information of HELLO Receive message Area address=102 and Area address=101, obtains the territory state.
Wherein, because switch for RB, is transparent, so the TRILL neighbours RB of RB1 has comprised RB2, RB3, RB4 and RB5.RB1 receives RB2, RB3, RB4 and RB5 and sends the HELLO message, and sends the HELLO message to RB2, RB3, RB4 and RB5.The HELLO message that sends by receiving RB2, RB3, RB4 and RB5, RB1 obtains the domain information in TRILL territory 501 and TRILL territory 502, further obtains the territory state.
S2:RB1 compares this territory state that obtains with territory state before, when definite territory state changed, network entered the territory status recognition, and RB1 judges whether self is to be used to each TRILL territory to assign the territory of VLAN to assign access network element.
RB1 judges that the territory priority that draws TRILL territory 501 and TRILL territory 502 is identical, but judgement definite 102 is the domain name maximum in the residing TRILL of RB1 territory greater than 101, RB1 determines that its residing TRILL territory 501 is the highest TRILL territory of configuration, then, RB1 determines from the network element priority in its residing TRILL territory 501 maximum, RB1 determines himself to be that access network element is assigned in the territory, need to be TRILL territory 501 and TRILL territory 502 appointment VLAN.
On the contrary, if RB1 determines it self is not that access network element is assigned in the territory, then finish to judge, wait for that being defined as the territory assigns the RB of access network element to assign VLAN.
RB1 also can add up respectively the territory forwarding information in each the TRILL territory that is connected on the switch, and described territory forwarding information comprises: the sign of the VLAN that each TRILL territory can be transmitted.
Can pre-set a time range value, the judgement that makes RB1 carry out assigning access network element in the territory determines, and obtains the territory forwarding information, when this time arrives, carries out S3.
S3:RB1 determines to enter the territory and assign state from assigning access network element as the territory, and assigning access network element RB1 by the territory is that VLAN is assigned in each TRILL territory, supposes to assign the result as follows:
The forwarding territory of VLAN101-300 appointment is: TRILL territory 501:
The forwarding territory of VLAN301-500 appointment is: TRILL territory 502.
The territory that RB1 in the S4:TRILL territory 501, RB3, RB5 determine in this territory is represented as RB1, and the territory that the RB2 in the TRILL territory 502, RB4, RB6 determine in the territory is represented as RB2.Territory representative is the highest network element of configuration in the TRILL territory, can be jointly definite by network element priority or network element priority and MAC Address.
S5:RB1 carries out the appointment of the VLAN in the TRILL territory 501, and RB2 carries out the appointment of the VLAN in the TRILL territory 502.Suppose through assigning:
The forwarding network element of VLAN101-200 is RB1, and the forwarding network element of VLAN201-300 is RB3;
The forwarding network element of VLAN301-400 is RB2, and the forwarding network element of VLAN401-500 is RB4.
Description by above-described embodiment as can be known, the present invention has the following advantages:
By in the layering networking of TRILL territory, determine and be used to VLAN to assign the territory in TRILL territory to assign access network element, unified for assigning VLAN in each the TRILL territory in the network, make a plurality of TRILL territory be responsible for transmitting respectively the message of different VLANs, realize preferably load balancing, and the message that can avoid the VLAN in the TRILL territory occurring forms loop easily, and broadcasting packet may duplicate the problems such as broadcasting between the territory.
Seeing also Fig. 6, is the second embodiment schematic flow sheet of the method for appointment VLAN of the present invention again.The described method of present embodiment comprises:
S201: the network element of operation TRILL agreement receives the HELLO message of neighbours' network element, carries the domain information in each TRILL territory in the described HELLO message;
S202: the network element of operation TRILL agreement is according to the domain information in each TRILL territory of described HELLO Receive message, wherein, described domain information comprises: the domain name in TRILL territory, the sign of the network element of the operation TRILL agreement that comprises in the TRILL territory, territory in the current TRILL territory represents network element ID, and the access network element sign is assigned in current territory.
S203: the network element of operation TRILL agreement judges according to the described domain information that obtains whether the territory state in each TRILL territory changes.If, carry out S204, otherwise, finish.
Concrete, be according to the HELLO message that receives, judge whether the TRILL territory increases or reduce, if the TRILL territory increases or reduces, then the territory state changes; Perhaps according to the HELLO message that receives, judge whether to exist the territory in certain TRILL territory to represent network element failure or leave, if the territory represents network element failure or leaves, then the territory state changes.
S204: the network element of operation TRILL agreement judges self whether to be territory appointment access network element in the network of described TRILL territory layering networking.
The concrete judgment rule of described S204 is:
Judge whether the residing TRILL of this network element self territory is the highest territory of priority, territory in each TRILL territory.
If the territory priority in self residing TRILL territory judges for the highest whether priority the highest TRILL territory in territory comprises two or more.
If only comprise a TRILL territory that priority is the highest, determine that then the residing TRILL of this network element territory is the highest TRILL territory of configuration in each TRILL territory;
If comprise the TRILL territory that two or more priority are the highest, then further judge the size of the domain name in the TRILL territory that these two or more territory priority are the highest, if the domain name in the residing TRILL of this network element territory is maximum, determine that then the residing TRILL of this network element territory is the highest TRILL territory of configuration in each TRILL territory.
Determining that the residing TRILL of this network element territory be when disposing the highest TRILL territory in each TRILL territory, judging that whether this network element is the highest network element of network element priority in self residing TRILL territory.
If this network element is the highest network element of network element priority in self residing TRILL territory, judge whether the highest network element of network element priority comprises two or more in the residing TRILL territory; Otherwise, finish.
If only comprise a highest network element of network element priority, determine that then this network element be the highest network element of configuration in self residing TRILL territory, and definite this network element is territory appointment access network element;
If comprise the highest network element of two or more network element priority, then further judge the size of the MAC Address in the TRILL territory that these two or more network element priority are the highest, if the MAC Address of this network element is maximum, determine that then this network element be the highest network element of configuration in self residing TRILL territory, and definite this network element is territory appointment access network element.
The concrete judgment rule of described S204 also can be:
Judge that whether this network element is the highest network element of network element priority in self residing TRILL territory.
If this network element is the highest network element of network element priority in self residing TRILL territory, judge whether the highest network element of network element priority comprises two or more in the residing TRILL territory; Otherwise, finish.
If only comprise a highest network element of network element priority, determine that then this network element be to dispose the highest network element in self residing TRILL territory;
If comprise the highest network element of two or more network element priority, then further judge the size of the MAC Address in the TRILL territory that these two or more network element priority are the highest, if the MAC Address of this network element is maximum, determine that then this network element be to dispose the highest network element in self residing TRILL territory.
Judge to determine that this network element be when disposing the highest network element in self residing TRILL territory, to judge further whether the residing TRILL of this network element self territory is the highest territory of priority, territory in each TRILL territory.
If the territory priority in self residing TRILL territory judges for the highest whether priority the highest TRILL territory in territory comprises two or more.
If only comprise a TRILL territory that priority is the highest, determine that then the residing TRILL of this network element territory is the highest TRILL territory of configuration in each TRILL territory, and determine that this network element is that access network element is assigned in the territory;
If comprise two or more, then further judge the size of the domain name in the TRILL territory that these two or more territory priority are the highest, if the domain name in the residing TRILL of this network element territory is maximum, determine that then the residing TRILL of this network element territory is the highest TRILL territory of configuration in each TRILL territory, and determine that this network element is that access network element is assigned in the territory.
Simultaneously, also can add up the territory forwarding information in each the TRILL territory that is connected on the switch, described territory forwarding information comprises: the sign of the VLAN that each TRILL territory can be transmitted, so that determine after assigning access network element as the territory, to carry out assigning the job of VLAN.
S205: assign virtual LAN VLAN for described each TRILL territory, make each TRILL territory be responsible for transmitting the message of different VLAN.
S206: the network element of operation TRILL agreement judges self whether to be that territory in self TRILL of living in territory represents network element.If be judged as when being, carry out S207, otherwise carry out S208.
Can be according to the network element priority in the TRILL territory, perhaps combine to determine whether that according to the MAC Address of network element priority and network element the territory in self TRILL of living in territory represents network element.In addition, judge self whether to be that the mode that the territory represents network element also can be: whether the sender's sign (Sender Nickname) by judging self identifies greatly than the sender of other network elements in this TRILL territory.Wherein, the sender of other network elements sign is carried in the HELLO message in this TRILL territory.
S207: the VLAN that will be assigned to this TRILL territory redesignates to each network element in this TRILL territory and carries out message repeating, and transmits the message of the VLAN that is assigned to self.
S208: transmit and represent the message that network element is assigned to the VLAN of self by the territory in this TRILL territory.
Description by above-described embodiment as can be known, the present invention has the following advantages:
By in the layering networking of TRILL territory, determine and be used to VLAN to assign the territory in TRILL territory to assign access network element, unified for assigning VLAN in each the TRILL territory in the network, make a plurality of TRILL territory be responsible for transmitting respectively the message of different VLANs, realize preferably load balancing, and the message that can avoid the VLAN in the TRILL territory occurring forms loop easily, and broadcasting packet may duplicate the problems such as broadcasting between the territory.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process such as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or store-memory body (Random Access Memory, RAM) etc. at random.
Above disclosed is preferred embodiment of the present invention only, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (14)
1. method of assigning VLAN, be applied in the translucent interconnection of the multilink TRILL territory layering networking, comprise a plurality of one-level TRILL territory in the layering networking of described TRILL territory, the network element that comprises at least one operation TRILL agreement in each one-level TRILL territory, it is characterized in that the method comprises:
The network element of operation TRILL agreement obtains the domain information in described each TRILL territory;
According to the described domain information that obtains, judge whether the territory state in each TRILL territory changes;
When the territory at least one TRILL territory state changes, judge self whether to be that access network element is assigned in territory in the network of described TRILL territory layering networking;
If, assign virtual LAN VLAN for described each TRILL territory, make each TRILL territory be responsible for transmitting the message of different VLAN.
2. the method for claim 1 is characterized in that, the domain information that the network element of described operation TRILL agreement obtains described each TRILL territory comprises:
The network element of operation TRILL agreement receives the HELLO message that neighbours' network element sends, and carries the domain information in each TRILL territory in the described HELLO message;
Domain information according to each TRILL territory of described HELLO Receive message, wherein, described domain information comprises: the domain name in TRILL territory, the sign of the network element of the operation TRILL agreement that comprises in the TRILL territory, territory in the current TRILL territory represents network element ID, and the access network element sign is assigned in current territory.
3. method as claimed in claim 2 is characterized in that, according to the described domain information that obtains, whether the territory state of judging each TRILL territory changes and comprise:
According to the HELLO message that receives, judge whether the TRILL territory increases or reduce, if when the TRILL territory increases or reduces, confirm that then the territory state changes; Perhaps
According to the HELLO message that receives, judge whether to exist the territory in certain TRILL territory to represent network element failure or leave, if the territory represents network element failure or leaves, confirm that then the territory state changes.
4. method as claimed in claim 2 or claim 3, it is characterized in that, the domain information in each TRILL territory of carrying in the described HELLO message also comprises: the territory priority in TRILL territory, the domain name in TRILL territory, network element priority and the MAC Address thereof of the network element of the operation TRILL agreement that comprises in the TRILL territory;
Described when the territory at least one TRILL territory state changes, judge self whether to be that the territory of described TRILL network assigns access network element to comprise:
When the territory at least one TRILL territory state changed, the network element of operation TRILL agreement judged whether self residing TRILL territory is to dispose the highest TRILL territory after the territory state changes in each TRILL territory; Wherein, the highest TRILL territory of described configuration refers to: the highest TRILL territory of territory priority of unique existence in each TRILL territory after the territory state changes perhaps refers to: the TRILL territory that territory priority is the highest and domain name is maximum in each TRILL territory after the territory state changes;
If judge self whether to be the highest network element of configuration in self residing TRILL territory, if then determine from assigning access network element as the territory; Wherein, the highest network element of described configuration refers to: the highest network element of network element priority of unique existence in the TRILL territory perhaps refers to: the network element that network element priority is the highest and MAC Address is maximum in the TRILL territory.
5. method as claimed in claim 2 or claim 3, it is characterized in that, the domain information in each TRILL territory of carrying in the described HELLO message also comprises: the territory priority in TRILL territory, the domain name in TRILL territory, network element priority and the MAC Address of the network element of the operation TRILL agreement that comprises in the TRILL territory;
Described when the territory at least one TRILL territory state changes, judge self whether to be that the territory of described TRILL network assigns access network element to comprise:
When the territory at least one TRILL territory state changed, the network element of operation TRILL agreement judged self whether to be to dispose the highest network element in self residing TRILL territory; Wherein, the highest network element of described configuration refers to: the highest network element of network element priority of unique existence in the TRILL territory perhaps refers to: the network element that network element priority is the highest and MAC Address is maximum in the TRILL territory;
If judge whether self residing TRILL territory is that in each TRILL territory the highest TRILL territory of configuration after the territory state changed, if then determine from assigning access network element as the territory; Wherein, the highest TRILL territory of described configuration refers to: the highest TRILL territory of territory priority of unique existence in each TRILL territory after the territory state changes perhaps refers to: the TRILL territory that territory priority is the highest and domain name is maximum in each TRILL territory after the territory state changes.
6. such as each described method of claim 1 to 5, it is characterized in that, also comprise:
The network element of operation TRILL agreement judges self whether to be that territory in self TRILL of living in territory represents network element;
If judged result is yes, the VLAN that then will be assigned to this TRILL territory redesignates to each network element in this TRILL territory, and transmits the message of the VLAN that is assigned to self;
If the determination result is NO, then transmit by the territory in this TRILL territory and represent the message that network element is assigned to the VLAN of self.
7. method as claimed in claim 6 is characterized in that, also comprises:
The territory forwarding information in network element statistics each TRILL territory after the territory state changes of operation TRILL agreement, described territory forwarding information comprises: the sign of the VLAN that each TRILL territory can be transmitted.
8. network element that moves the TRILL agreement, the network element of this operation TRILL agreement is arranged in the one-level TRILL territory in the translucent interconnection of the multilink TRILL territory layering networking, wherein, comprises a plurality of one-level TRILL territory in the layering networking of described TRILL territory, it is characterized in that described network element comprises:
Acquisition module is used for obtaining the domain information in described each TRILL territory;
Condition judgment module for the domain information that obtains according to described acquisition module, judges whether the territory state in each TRILL territory changes;
Determination module when being used for the result that judges when described condition judgment module and changing for the territory state at least one TRILL territory, judges self whether to be territory appointment access network element in the network of described TRILL territory layering networking;
Assignment module is used for judging when assigning access network element as the territory at described determination module, assigns virtual LAN VLAN for described each TRILL territory, makes each TRILL territory be responsible for transmitting the message of different VLAN.
9. network element as claimed in claim 8 is characterized in that, described acquisition module comprises:
Receiving element is used for receiving the HELLO message that neighbours' network element sends, and carries the domain information in each TRILL territory in the described HELLO message;
Acquiring unit, be used for the domain information according to each TRILL territory of described HELLO Receive message, wherein, described domain information comprises: the domain name in TRILL territory, the sign of the network element of the operation TRILL agreement that comprises in the TRILL territory, territory in the current TRILL territory represents network element ID, and the access network element sign is assigned in current territory.
10. network element as claimed in claim 9, it is characterized in that, condition judgment module specifically is used for carrying according to the HELLO message that gets access to the domain information in each TRILL territory, by judging whether the TRILL territory increases or reduce the territory state of judging each TRILL territory and whether change;
Perhaps be used for carrying according to the HELLO message that gets access to the domain information in each TRILL territory, judge whether to exist the territory in certain TRILL territory to represent network element failure or leave to judge whether the territory state in each TRILL territory changes.
11. such as claim 9 or 10 described network elements, it is characterized in that described determination module comprises:
The first determining unit is used for when the territory at least one TRILL territory state changes, and judges whether the residing TRILL of this network element territory is that in each TRILL territory the highest TRILL territory of configuration after the territory state changed; Wherein, the highest TRILL territory of described configuration refers to: the highest TRILL territory of territory priority of unique existence in each TRILL territory after the territory state changes perhaps refers to: the TRILL territory that territory priority is the highest and domain name is maximum in each TRILL territory after the territory state changes;
The second determining unit is used in the judged result of described the first determination module when being, judges that whether this network element is the highest network element of configuration in self residing TRILL territory, if then determine certainly as territory appointment access network element; Wherein, the highest network element of described configuration refers to: the highest network element of network element priority of unique existence in the TRILL territory perhaps refers to: the network element that network element priority is the highest and MAC Address is maximum in the TRILL territory.
12. such as claim 9 or 10 described network elements, it is characterized in that described determination module comprises:
The 3rd determining unit is used for when the territory at least one TRILL territory state changes, and judges that whether this network element is to dispose the highest network element in self residing TRILL territory; Wherein, the highest network element of described configuration refers to: the highest network element of network element priority of unique existence in the TRILL territory perhaps refers to: the network element that network element priority is the highest and MAC Address is maximum in the TRILL territory;
The 4th determining unit is used in the judged result of described the 3rd determination module judging whether the residing TRILL of this network element territory is that in each TRILL territory the highest TRILL territory of configuration after the territory state changed when being, if then determine from as territory appointment access network element; Wherein, the highest TRILL territory of described configuration refers to: the highest TRILL territory of territory priority of unique existence in each TRILL territory after the territory state changes perhaps refers to: the TRILL territory that territory priority is the highest and domain name is maximum in each TRILL territory after the territory state changes.
13. such as each described network element of claim 8 to 12, it is characterized in that,
Described determination module is used for also judging that whether this network element is that territory in self TRILL of living in territory represents network element;
Described assignment module also is used in the judged result of described determination module the VLAN that is assigned to this TRILL territory being redesignated to each network element in this TRILL territory when being;
Described network element further comprises forwarding module, is used for transmitting the message of the VLAN that is assigned to self.
14. network element as claimed in claim 13 is characterized in that, also comprises:
Statistical module, for the territory forwarding information in statistics each TRILL territory after the territory state changes, described territory forwarding information comprises: the sign of the VLAN that each TRILL territory can be transmitted.
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| CN103560964A (en) * | 2013-10-28 | 2014-02-05 | 杭州华三通信技术有限公司 | Method and device for improving load sharing and stability according to VLANs in TRILL protocol |
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| CN102123091A (en) * | 2011-02-25 | 2011-07-13 | 福建星网锐捷网络有限公司 | Method, device and network equipment for generating multilink transparent transmission interconnection forwarding table |
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| CN102123091A (en) * | 2011-02-25 | 2011-07-13 | 福建星网锐捷网络有限公司 | Method, device and network equipment for generating multilink transparent transmission interconnection forwarding table |
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| D. EASTLAKE 3RD等: "Routing Bridges (RBridges): Adjacency", 《RFC6327》 * |
Cited By (2)
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| CN103560964A (en) * | 2013-10-28 | 2014-02-05 | 杭州华三通信技术有限公司 | Method and device for improving load sharing and stability according to VLANs in TRILL protocol |
| CN103560964B (en) * | 2013-10-28 | 2017-02-15 | 杭州华三通信技术有限公司 | Method and device for sharing VLAN load based on multilink semi-transparent TRILL protocol |
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