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Notification method and device based on ISIS protocol

A notification and protocol technology, applied in the field of communication, can solve problems such as neighbor vibration, achieve the effect of solving neighbor vibration, eliminating bad user experience, and suppressing network topology and routing vibration

Active Publication Date: 2019-02-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a notification method and device based on the ISIS protocol to at least solve the technical problem in the related art that neighbors vibrate due to problems with the link where the neighbors are located

Method used

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  • Notification method and device based on ISIS protocol
  • Notification method and device based on ISIS protocol
  • Notification method and device based on ISIS protocol

Examples

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Embodiment 1

[0027] In this embodiment, a notification method based on the ISIS protocol is provided, figure 1 is a flow chart of a notification method based on the ISIS protocol according to an embodiment of the present invention, such as figure 1 As shown, the process includes the following steps:

[0028] Step S102, within the delay time after the intermediate system IS establishes a new neighbor, notify the outside of the IS arrival cost metric as a preset value through the link state protocol LSP data packet;

[0029] Step S104, after the delay time expires, restore the metric to a normal value, wherein the preset value is greater than the normal value.

[0030] Through the above steps, since the metric of the arrival of the IS is notified to the outside as a preset value, and returns to the normal value after the delay time expires, the technical problem of neighbor vibration caused by the problem of the link where the neighbor is located in the related technology is solved. , whic...

Embodiment 2

[0043] In this embodiment, a notification device based on the ISIS protocol is also provided, and the device is used to implement the above embodiments and preferred implementation modes, and those that have already been described will not be repeated. As used below, the term "module" may be a combination of software and / or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

[0044] figure 2 It is a structural block diagram of an ISIS protocol-based notification device according to an embodiment of the present invention, which can be applied to various ISIS-supporting devices, including routers and switches, such as figure 2 As shown, the device includes:

[0045] The notification module 20 is used to notify the outside that the cost metric of IS arrival is a preset value t...

Embodiment 3

[0051] This embodiment is an optional embodiment according to the present invention, and is used to describe this application in detail in conjunction with specific scenarios and examples:

[0052] The invention provides a method for delaying route calculation after IS-IS protocol neighbors are established. The ISIS protocol notifies the metric of the relevant neighbor in the LSP as the maximum value or an increased value within a certain delay period after the neighbor is established, and performs topology and routing calculations according to the relevant metric; after the delay time expires, it returns to the normal value and is used again. Normal values ​​are used for topology and routing calculations. This method suppresses the network topology and route flapping caused by neighbor flapping, and eliminates the poor user experience caused by intermittent traffic.

[0053] The purpose of the present invention is to solve the serious consequences caused by the vibration of ...

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Abstract

The invention provides a notification method and device based on an ISIS protocol, wherein the method comprises the steps of: in the delay time after an intermediate system IS establishes a new neighbour, notifying the cost metric of IS arrival as a pre-set value through a link state protocol LSP data packet; and, after the delay time is due, recovering the metric to a normal value, wherein the pre-set value is greater than the normal value. By means of the notification method and device based on the ISIS protocol in the invention, the technical problem of neighbour oscillation due to the factthat a link, where the neighbour is, has a problem in a related technology can be solved; network topology and routing oscillation due to neighbour oscillation can be inhibited; and the poor user experience due to the fact that the flow is on and off can be avoided.

Description

technical field [0001] The present invention relates to the communication field, in particular, to an ISIS protocol-based notification method and device. Background technique [0002] Intermediate System to Intermediate System Routing Protocol (ISIS) is a dynamic, link-state based Interior Gateway Protocol (IGP). After the ISIS protocol establishes a neighbor through hello message exchange negotiation, each intermediate system (IS) generates a link state protocol packet (LSP) to describe the link state information of the intermediate system (IS), and sends it to the network, and It also stores LSPs sent by all intermediate system (IS) devices on the network topology to form a link state database (LSDB). ISIS uses the link state database (LSDB) to calculate the best route to the destination address through the shortest path first algorithm (SPF). [0003] An intermediate system (IS) will trigger the regeneration of LSP immediately after the neighbor establishes UP, and anno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/703H04L12/721H04L12/727H04L12/751H04L45/28H04L45/02H04L45/121
CPCH04L45/02H04L45/121H04L45/123H04L45/124H04L45/28H04L45/03H04L45/023
Inventor 吴强
Owner ZTE CORP
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