CN101771601B - Intermediate system-intermediate system protocol message processing method, node and system - Google Patents
Intermediate system-intermediate system protocol message processing method, node and system Download PDFInfo
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- CN101771601B CN101771601B CN2008102422163A CN200810242216A CN101771601B CN 101771601 B CN101771601 B CN 101771601B CN 2008102422163 A CN2008102422163 A CN 2008102422163A CN 200810242216 A CN200810242216 A CN 200810242216A CN 101771601 B CN101771601 B CN 101771601B
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Abstract
The invention discloses an intermediate system-intermediate system protocol message processing method, node and system, belonging to the communication field, which solves the problem of large information diffuse and unnecessary route oscillation in prior art. In the embodiment, the intermediate system-intermediate system protocol message processing method comprises a first node and a second node receiving IS-IS protocol message; the IS-IS protocol message carries indication according to a domain identification of the second node business domain to judge whether the domain identification of the first node business domain and the second node business domain has the same domain identification; if no identical domain identification is judged, the IS-IS protocol message is dismissed, thereby cutting down the diffusion of the protocol message in the internet and reducing the route oscillation. In the embodiment, the invention correspondingly discloses a node device and an internet system.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of intermediate system-intermediate system protocol message processing method, node and system.
Background technology
IS-IS (intermediate system-intermediate system Intermediate System to Intermediate System) agreement is a kind of dynamic routing protocol; Be ISO (International Standards Organization the earliest; International Organizationfor Standardization) be CLNP (connectionless network protocol; Connectionless Network Protocol) designs, increased the support of IS-IS afterwards again for IP (Internet protocol, Internet Protocol).IS-IS supports TLV (Type-Length-Value, type lengths values) addressing mode flexibly, and protocol extension property is good, and routing convergence speed is fast, and clear in structure is suitable for large scale network, obtains application more and more widely in recent years.
Intermediate System to Intermediate System is divided into a plurality of zones through node rank and regional address are set with network, wherein can comprise normal areas and backbone area.Belong to the same area and come exchanging routing information for layer 1 node makes layer 1 node belong to nodes of different areas through layer 2 adjacency, its middle level 2 nodes also are backbone node.Layer 1-2 node can provide the zone to connect for the node in layer 1 territory, mails to the backbone to the routing iinformation of layer 1.Node can be a layer 1, also can be layer 2, also can be layer 1-2 node.The node of layer 1 is known TE (traffic engineering, the Traffic Engineering) information of one's respective area, and layer 1-2 node is known the TE information of one's respective area, knows the TE information of backbone area simultaneously.
In the existing Intermediate System to Intermediate System message processing method; After node receives the Intermediate System to Intermediate System message of neighbor node; Can this Intermediate System to Intermediate System message be stored in this node; And, cause the diffusion of information amount bigger with other neighbor node diffusion of this Intermediate System to Intermediate System message to this node, produce unnecessary route flapping.
Summary of the invention
The present invention provides a kind of Intermediate System to Intermediate System message processing method, node apparatus and system that can reduce the diffusion of information amount.
Execution mode of the present invention provides a kind of Intermediate System to Intermediate System message processing method, comprising:
First node in the network from this first node each other the Section Point of neighbor node receive the Intermediate System to Intermediate System message; Wherein, said network divides the territory according to business demand, and said Intermediate System to Intermediate System message carries the domain identifier of the affiliated business domains of this Section Point, and said first node stores the domain identifier of the affiliated business domains of said first node;
Judge in the domain identifier of domain identifier and the affiliated business domains of Section Point of business domains under the said first node whether identical domain identifier is arranged;
There is not identical domain identifier if judge, abandons said Intermediate System to Intermediate System message.
Execution mode of the present invention also provides a kind of node apparatus, comprising:
The message receiver module is used for receiving the Intermediate System to Intermediate System message from the neighbor node of this node apparatus, and said Intermediate System to Intermediate System message carries the domain identifier of the affiliated business domains of this neighbor node;
Memory module is used to store the domain identifier of the affiliated business domains of this node apparatus;
Judge module is used for judging whether the domain identifier of the affiliated business domains of said node apparatus and the domain identifier of the affiliated business domains of said neighbor node have identical domain identifier;
The identification process module is used for when judging when not having identical domain identifier, with said Intermediate System to Intermediate System packet loss.
Execution mode of the present invention also provides a kind of network system, comprises the first node and the Section Point of neighbor node each other, and said network system is divided the territory according to business demand, and said first node is used for:
Receive the Intermediate System to Intermediate System message from said Section Point, said Intermediate System to Intermediate System message carries the domain identifier of the affiliated business domains of this Section Point; Said first node stores the domain identifier in the affiliated territory of this first node;
Judge in the domain identifier of domain identifier and the affiliated business domains of Section Point of business domains under the first node whether identical domain identifier is arranged;
There is not identical domain identifier if judge, abandons said Intermediate System to Intermediate System message.
Technical scheme through embodiment of the invention description; Network divides the territory according to business demand, after the node in the network receives the Intermediate System to Intermediate System message from neighbor node, when under this node, not having identical domain identifier in the domain identifier of business domains under the domain identifier of business domains and the neighbor node; Abandon the Intermediate System to Intermediate System message of reception; Thereby can this Intermediate System to Intermediate System message diffusion can not reduced the diffusing capacity of protocol massages in the network, reduce route flapping.
Description of drawings
For the technical scheme and the advantage of technical problem that the present invention is solved, employing are clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention done further sets forth in detail.Should understand, all diagrams are unnecessary proportionally draws, and the present invention is not caused restriction.In each accompanying drawing:
The flow chart of the Intermediate System to Intermediate System message processing method that Fig. 1 provides for the embodiment of the invention one;
Fig. 2 is in the prior art with Fig. 1 being the structural representation of using the network of the Intermediate System to Intermediate System message processing method that the embodiment of the invention provides;
Fig. 3 is the form of TLV in the prior art;
Fig. 4 is when the domain identifier of business domains comprises 3 under the Section Point in the embodiment of the invention one, the form of VALUE field and NUMBER field among the area business attribute TLV;
The flow chart of the Intermediate System to Intermediate System message processing method that Fig. 5 provides for the embodiment of the invention two;
The structure chart of the node apparatus that Fig. 6 provides for the embodiment of the invention three;
The structure chart of the network system that Fig. 7 provides for the embodiment of the invention four.
Embodiment
Lift embodiment below and further specify technical scheme of the present invention.
As shown in Figure 1, the embodiment of the invention one provides a kind of Intermediate System to Intermediate System message processing method, comprising:
First node in S101, the network from this first node each other the Section Point of neighbor node receive the Intermediate System to Intermediate System message; Wherein, said network divides the territory according to business demand, and said Intermediate System to Intermediate System message carries the domain identifier of the affiliated business domains of this Section Point, and said first node stores the domain identifier of the affiliated business domains of said first node;
The domain identifier of business domains comprises that the set of the node that need pass through according to the transmission intended service is after unit divides business domains under the Section Point, the domain identifier of business domains under the said Section Point.The domain identifier of business domains comprises that the set of the node that need pass through according to the transmission intended service is after unit divides business domains under the first node, the domain identifier of business domains under the said first node.Particularly, intended service can comprise the business between two or more predetermined nodes.Like the structural representation of Fig. 2 for the network of the Intermediate System to Intermediate System message processing method using the embodiment of the invention and provide; Comprise 12 nodes from R1-R12 among the figure, predetermined business can be set at the business between R1 and the R2 according to user's request; Correspondingly; The set of the node of the service needed process between transmission R1 and the R2 is exactly R1 and R2, therefore can R1 and R2 be divided into a business domains, and allocation domain identifies the business domains of forming to R1 and R2.This domain identifier can be a numeral, also can be colour code, such as numeral " 1 " or color " redness ".Equally; Predetermined business also can be according to user's request; Be set at the business between R1, R2, R3, the R4; The set of transmitting the node of the service needed process between these four nodes is exactly R1, R2, R5, R7, R6, R3, R4, can R1, R2, R5, R7, R6, R3, R4 be divided into a business domains, and allocation domain identifies to this business domains.
Can be through in the Intermediate System to Intermediate System message, increasing the domain identifier that area business attribute TLV carries business domains under the Section Point, Fig. 3 be the form of TLV in the prior art, comprises type (TYPE) field, length (LENGTH) field is worth (VALUE) field.Can adopt the form of existing TLV in the embodiment of the invention; The TYPE field that the area business attribute TLV that the embodiment of the invention increases comprises is represented the type of this area business attribute TLV; The LENGTH field is represented the length of the byte that this area business attribute TLV is shared, and the VALUE field is represented the domain identifier of the business domains under this Section Point.Business domains under the embodiment of the invention Section Point can be one or more, and said area business attribute TLV can also comprise number (NUMBER) field, is used to represent the number of the business domains under this Section Point.When Fig. 4 has 3 for the business domains under the Section Point, the form of VALUE field and NUMBER field among this area business attribute TLV, wherein the value of NUMBER field is 3, the numerical value of VALUE field is 1,2 and 3.
The domain identifier that said first node is stored the affiliated business domains of said first node also can be one or more.
Intermediate System to Intermediate System message in this step is except comprising area business attribute TLV; Can also comprise regional address attribute TLV; The TYPE field of this regional address attribute TLV is represented the type of this regional address attribute TLV; The LENGTH field is represented the length of this regional address attribute TLV, after the VALUE field is represented the address field division rule division address field according to existing Intermediate System to Intermediate System, and the domain identifier of the address field under the Section Point.Because the content of regional address attribute TLV and effect can be adopted prior art, and obvious difference is arranged, so be not described in detail here with business domains that the embodiment of the invention is paid close attention to.
Particularly, said Intermediate System to Intermediate System message can be LSP (link-state protocol, Link State Protocol) message or HELLO (inquiry) message.
In the domain identifier of business domains whether identical domain identifier is arranged under S102, the domain identifier of judging the affiliated business domains of said first node and the Section Point;
There is not identical domain identifier if S103 judges in the domain identifier of business domains under domain identifier and the said Section Point of business domains under the said first node, then abandons said Intermediate System to Intermediate System message.
Step 103 back can also comprise:
If S104 judges the domain identifier that has identical business domains, store said Intermediate System to Intermediate System message at said first node.
The Intermediate System to Intermediate System message processing method that provides through the embodiment of the invention; Network divides the territory according to business demand, after first node receives the Intermediate System to Intermediate System message from Section Point, when under first node, not having identical domain identifier in the domain identifier of business domains under the domain identifier of business domains and the Section Point; Abandon the Intermediate System to Intermediate System message of reception; Thereby can not preserve this Intermediate System to Intermediate System message on the first node, after this Intermediate System to Intermediate System message changed, first node can be with this Intermediate System to Intermediate System message diffusion; Owing to do not have identical domain identifier in the domain identifier of the domain identifier of business domains and the affiliated business domains of Section Point under the first node; So the Intermediate System to Intermediate System message that abandons can not impact the business transmission, can reduce the diffusing capacity of protocol massages in the network simultaneously, reduces route flapping.
As shown in Figure 5, in conjunction with Fig. 2, the embodiment of the invention two provides a kind of Intermediate System to Intermediate System message processing method, comprising:
Node R 4 in S501, the network from node R 4 each other the node R 8 of neighbor node receive the Intermediate System to Intermediate System messages; Said network divides the territory according to business demand, and said Intermediate System to Intermediate System message carries the domain identifier of these node R 8 affiliated business domains; Said node R 4 stores the domain identifier of node R 4 affiliated business domains;
Particularly, said Intermediate System to Intermediate System message can be LSP message or HELLO message.
As shown in Figure 2, according to customer demand, set two predetermined business, professional one is the business between R1, R2, R3, the R4, professional two is the business between R8, the R9.Then the set according to the transmission intended service node that need pass through is that unit divides business domains; Because the set of the node of the service needed process between transmission R1, R2, R3, the R4 is R1, R2, R5, R7, R6, R3, R4; R1, R2, R5, R7, R6, R3, R4 are divided into a business domains, and allocation domain sign " 1 " is given this business domains.Because the set of the node of the service needed process between transmission R8, the R9 is R8, R9, and R8, R9 are divided into a business domains, and allocation domain sign " 2 " is given this business domains.The domain identifier according to business domains under this node R 8 behind the business demand branch territory that the Intermediate System to Intermediate System message carries in this step is " 2 ", and node R 4 stores the domain identifier " 1 " according to business domains under the posterior nodal point R4 of business demand branch territory.
In the domain identifier of business domains whether identical domain identifier is arranged under S502, the domain identifier of judging said node R 4 affiliated business domains and the node R 8;
There is not identical domain identifier in the domain identifier of business domains under S503, the domain identifier of judging said node R 4 affiliated business domains and the said node R 8, then abandons said Intermediate System to Intermediate System message.
If said Intermediate System to Intermediate System message is the HELLO message; Because first node can regularly receive the HELLO message that Section Point sends; First node can in time be known the domain identifier situation of change of the affiliated business domains of Section Point; And under the domain identifier of judging business domains under the first node and Section Point the domain identifier of business domains not simultaneously, self the LSP message of can selecting not redispatch is given Section Point, thereby further reduces the diffusing capacity of protocol massages in the network.
Corresponding to above-mentioned Intermediate System to Intermediate System message processing method, the embodiment of the invention three provides a kind of node apparatus, and said node apparatus is arranged in the network according to business demand branch territory, and is as shown in Figure 6, and this node apparatus comprises:
The message receiver module is used for receiving the Intermediate System to Intermediate System message from the neighbor node of this node apparatus, and said Intermediate System to Intermediate System message carries the domain identifier of the affiliated business domains of this neighbor node;
Memory module is used to store the domain identifier of the affiliated business domains of this node apparatus;
Judge module is used for judging whether the domain identifier of the affiliated business domains of said node apparatus and the domain identifier of the affiliated business domains of said neighbor node have identical domain identifier;
The identification process module is used for when judging when not having identical domain identifier, with said Intermediate System to Intermediate System packet loss.
Identification process module in the node apparatus that the embodiment of the invention three provides can also be used for:
Judge when having identical domain identifier when said judge module, said Intermediate System to Intermediate System message is stored to said memory module.
The node apparatus that provides through the embodiment of the invention; Network divides the territory according to business demand, after first node receives the Intermediate System to Intermediate System message from Section Point, when under first node, not having identical domain identifier in the domain identifier of business domains under the domain identifier of business domains and the Section Point; Abandon the Intermediate System to Intermediate System message of reception; Thereby can not preserve this Intermediate System to Intermediate System message on the first node, after this Intermediate System to Intermediate System message changed, first node can be with this Intermediate System to Intermediate System message diffusion; Owing to do not have identical domain identifier in the domain identifier of the domain identifier of business domains and the affiliated business domains of Section Point under the first node; So the Intermediate System to Intermediate System message that abandons can not impact the business transmission, can reduce the diffusing capacity of protocol massages in the network simultaneously, reduces route flapping.
The embodiment of the invention four provides a kind of network system, and is as shown in Figure 7, comprises the first node and the Section Point of neighbor node each other, and said network system is divided the territory according to business demand, and said first node is used for:
Receive the Intermediate System to Intermediate System message from said Section Point, said Intermediate System to Intermediate System message carries the domain identifier of the affiliated business domains of this Section Point; Said first node stores the domain identifier in the affiliated territory of this first node;
Judge in the domain identifier of domain identifier and the affiliated business domains of Section Point of business domains under the first node whether identical domain identifier is arranged;
There is not identical domain identifier if judge, abandons said Intermediate System to Intermediate System message.
Said first node in the network system that the embodiment of the invention four provides can also be used for:
There is identical domain identifier if judge in the domain identifier in domain identifier and the affiliated territory of Section Point in territory under the said first node, stores said Intermediate System to Intermediate System message at said first node.
The network system that provides through the embodiment of the invention; Network system is divided the territory according to business demand, after first node receives the Intermediate System to Intermediate System message from Section Point, when under first node, not having identical domain identifier in the domain identifier of business domains under the domain identifier of business domains and the Section Point; Abandon the Intermediate System to Intermediate System message of reception; Thereby can not preserve this Intermediate System to Intermediate System message on the first node, after this Intermediate System to Intermediate System message changed, first node can be with this Intermediate System to Intermediate System message diffusion; Owing to do not have identical domain identifier in the domain identifier of the domain identifier of business domains and the affiliated business domains of Section Point under the first node; So the Intermediate System to Intermediate System message that abandons can not impact the business transmission, can reduce the diffusing capacity of protocol massages in the network simultaneously, reduces route flapping.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
More than detailed introduction has been carried out at software interface implementation method, device and terminal that the embodiment of the invention provided, the explanation of above embodiment just is used for help understanding method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. intermediate system-intermediate system Intermediate System to Intermediate System message processing method is characterized in that, comprising:
First node in the network from this first node each other the Section Point of neighbor node receive the Intermediate System to Intermediate System message; Wherein, said network divides the territory according to business demand, and said Intermediate System to Intermediate System message carries the domain identifier of the affiliated business domains of this Section Point, and said first node stores the domain identifier of the affiliated business domains of said first node; The domain identifier of business domains comprises under the first node: the set of the node that need pass through according to the transmission intended service is after unit divides business domains, the domain identifier of business domains under the said first node; The domain identifier of business domains comprises under the Section Point: the set of the node that need pass through according to the transmission intended service is after unit divides business domains, the domain identifier of business domains under the said Section Point;
Judge in the domain identifier of domain identifier and the affiliated business domains of Section Point of business domains under the said first node whether identical domain identifier is arranged;
There is not identical domain identifier if judge, abandons said Intermediate System to Intermediate System message.
2. the method for claim 1 is characterized in that, comprising:
There is identical domain identifier if judge, stores said Intermediate System to Intermediate System message at said first node.
3. the method for claim 1 is characterized in that, the domain identifier of business domains carries through the area business attribute type length value TLV that increases in the said Intermediate System to Intermediate System message under the said Section Point.
4. like each described method among the claim 1-3, it is characterized in that said Intermediate System to Intermediate System message is link-state protocol LSP message or inquiry HELLO message.
5. like each described method among the claim 1-3, it is characterized in that the domain identifier in the said territory of said Section Point is a colour code.
6. a node apparatus is characterized in that, said node apparatus is arranged in the network according to business demand branch territory, and this node apparatus comprises:
The message receiver module; Be used for receiving the Intermediate System to Intermediate System message from the neighbor node of this node apparatus; Said Intermediate System to Intermediate System message carries the domain identifier of the affiliated business domains of this neighbor node; The domain identifier of business domains comprises under this neighbor node: the set of the node that need pass through according to the transmission intended service is after unit divides business domains, the domain identifier of business domains under this neighbor node;
Memory module; Be used to store the domain identifier of the affiliated business domains of this node apparatus; The domain identifier of business domains comprises under this node apparatus: the set of the node that need pass through according to the transmission intended service is after unit divides business domains, the domain identifier of business domains under this node apparatus;
Judge module is used for judging whether the domain identifier of the affiliated business domains of said node apparatus and the domain identifier of the affiliated business domains of said neighbor node have identical domain identifier;
The identification process module is used for when judging when not having identical domain identifier, with said Intermediate System to Intermediate System packet loss.
7. node apparatus as claimed in claim 6 is characterized in that, said identification process module also is used for:
Judge when having identical domain identifier when said judge module, said Intermediate System to Intermediate System message is stored to said memory module.
8. network system; Comprise the first node and the Section Point of neighbor node each other; It is characterized in that; Said network system is divided the territory according to business demand, and said first node receives the Intermediate System to Intermediate System message from said Section Point, and said Intermediate System to Intermediate System message carries the domain identifier of the affiliated business domains of this Section Point; Said first node stores the domain identifier in the affiliated territory of this first node; The domain identifier of business domains comprises under the first node: the set of the node that need pass through according to the transmission intended service is after unit divides business domains, the domain identifier of business domains under the said first node; The domain identifier of business domains comprises under the Section Point: the set of the node that need pass through according to the transmission intended service is after unit divides business domains, the domain identifier of business domains under the said Section Point;
Judge in the domain identifier of domain identifier and the affiliated business domains of Section Point of business domains under the first node whether identical domain identifier is arranged;
There is not identical domain identifier if judge, abandons said Intermediate System to Intermediate System message.
9. system as claimed in claim 8 is characterized in that, has identical domain identifier if said first node is judged, and stores said Intermediate System to Intermediate System message at said first node.
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| CN1705311A (en) * | 2004-05-26 | 2005-12-07 | 华为技术有限公司 | Method for determining metric value of link from intermediate system to intermediate system route protocol |
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