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Method and device for posting information in layered service provider (LSP) zone message

A packet and device technology, applied in the field of communication, can solve problems such as route learning shock, IS-IS neighbor shock, affecting network service stability, etc., and achieves the effect of flexible maintenance

Active Publication Date: 2013-03-27
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Currently, IS-IS protocol implementation does not support re-advertising the routing information that was not originally advertised in the LSP when the data information in the LSP fragment packet changes from full to full when the routing information changes. The data information in this article is stored in TLV format, which requires the user to perform a reset operation to regenerate LSP information, which will cause shocks to IS-IS neighbors and route learning, and affect the stability of network services
[0006] It can be seen from the above that the data information of LSP fragmented packets is stored in TLV format, which is not conducive to data maintenance and reconstruction of LSP fragmented packets

Method used

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  • Method and device for posting information in layered service provider (LSP) zone message
  • Method and device for posting information in layered service provider (LSP) zone message

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Embodiment 1

[0031] see Figure 4 , Figure 4 It is a flow chart of the method for publishing information in LSP fragmented packets in the first embodiment of the present invention. The specific steps are:

[0032] Step 401, according to the control information stored in the control information database, the device encapsulates the data information stored in the data information database belonging to the same LSP fragment according to the corresponding type to generate an LSP fragment message.

[0033] In the existing implementation, the data information of LSP fragmentation is stored in TLV format, and when the LSP message is issued, it is directly encapsulated in the LSP message. Encapsulated as TLV, and then encapsulated in the LSP message, what needs to be maintained is the data information in the TLV format.

[0034] Step 402, the device publishes the generated LSP message.

Embodiment 2

[0036] see Figure 5 , Figure 5 It is a schematic flowchart of a method for publishing information in LSP fragmented packets in Embodiment 2 of the present invention. The specific steps are:

[0037] Step 501, when the data information stored in the data information database corresponding to any one of the LSP fragmented messages changes, the device restarts the process according to the data information currently stored in the data information database and the current process environment of the LSP fragmented message. Dynamically generate control information, and update the control information corresponding to the LSP fragment message stored in the control information database.

[0038]In the specific embodiment of the present invention, when the data information of any LSP fragment changes, it is not necessary to restart (reset) the operation to regenerate all the LSP fragment messages, and only need to rebuild (rebuild) the LSP fragment message. Due to the separate stora...

Embodiment 3

[0048] see Image 6 , Image 6 It is a schematic flowchart of a method for publishing information in LSP fragmented packets in Embodiment 3 of the present invention. The specific steps are:

[0049] Step 601, when the data information in the LSP fragment changes from full to full, regenerate control information dynamically according to the data information and the current process environment of the LSP fragment message currently stored in the data information database, and update the LSP fragment The control information stored in the control information database corresponding to the fragment message.

[0050] Step 602, according to the control information corresponding to the LSP fragment message currently stored in the control information database, the device encapsulates the data information currently stored in the data information database belonging to the LSP fragment according to the corresponding type to generate an LSP fragment message text and publish it.

[0051] ...

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Abstract

The invention discloses a method for posting information in layered service provider (LSP) zone message. The method includes that a device stores data information to be posted into a data information database in, generates control information according to stored data information and current course environment trend and stores the information in a control information database. The device packages data information belonging to an identical LSP zone and stored in the data information database according to corresponding types to generate LSP zone message and post the message according to the control information stored in the control information database. The device based on identical invention conception is further provided. The method and the device are capable of effectively and flexibly maintaining the data information and the control information posting LSP zone message.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and equipment for publishing information in LSP fragmented messages. Background technique [0002] The intermediate-to-intermediate system (IntermediateSystemtoIntermediateSystem, IS-IS) protocol mainly notifies the topology and routing information through the link state data protocol unit (LinkStateProtocolDataUnit, LSP) message, and performs topology calculation based on the Dijkstra algorithm, and based on the calculated topology Perform IPv4 / IPv6 route calculation on the network, and use it to guide the forwarding of data packets. [0003] Currently, the IS-IS protocol stipulates that each IS-IS system can publish up to 256 LSP fragments, and the link state information in each LSP fragment is data information, which is stored in the format of type length value (TLV) However, the size of each LSP fragment is limited by the minimum Maximum Transmission Unit (MT...

Claims

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Application Information

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IPC IPC(8): H04L12/701
Inventor 魏志广羊俊姚博
Owner NEW H3C TECH CO LTD
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