Smoothing restarting method and neighbor devices

A neighbor device, graceful restart technology, applied in the field of data communication, can solve the problem of mistaken deletion of forwarding entries, process confusion, reducing GR effectiveness, etc., to avoid traffic interruption, improve effectiveness, and eliminate processing blind spots.
CN101094049AActive Publication Date: 2007-12-26NEW H3C TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
NEW H3C TECH CO LTD
Publication Date
2007-12-26

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Abstract

When the neighbor device tests and finds that the conversation with restart device is broken, the reconnect timer (RT) is started. When the neighbor device tests and finds that it is under the Operational state and RT is not overtime, RT is shut and a recovery timer is started. The neighbor device and the restarting device begin to recover the transferring items, used for keeping the flux. This invention prevents the flux from interrupting in the GR process. It also avoids the concurrence of several Recovery timers. All this raises the GR effectivity.
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Description

technical field

[0001] The invention relates to the technical field of data communication, in particular to a smooth restart method and neighbor equipment. Background technique

[0002] Graceful restart (GR, Graceful Restart) refers to ensuring normal data forwarding and uninterrupted key services when the protocol is restarted. GR technology is a kind of high reliability technology. GR is a redundant fault-tolerant technology, which has been widely used in active-standby switchover and system upgrade to ensure uninterrupted forwarding of key services.

[0003] Currently, multiprotocol label switching (MPLS) protocols supporting GR include: label distribution protocol (LDP) and resource reservation protocol (RSVP). When the two protocols support GR, parameters related to GR are added in the initialization message of the protocol, and these parameters are exchanged when establishing a session between routers to help GR.

[0004] Taking LDP as an example, the existing LDP G...

Claims

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