Neighbor discovery protocol graceful restart (GR) processing method and device

A Neighbor Discovery Protocol and Graceful Restart technology, applied in the field of communication, can solve problems affecting the processing of routing protocol GR

Inactive Publication Date: 2012-01-11
ZTE CORP
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This situation will affect the nor

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  • Neighbor discovery protocol graceful restart (GR) processing method and device
  • Neighbor discovery protocol graceful restart (GR) processing method and device
  • Neighbor discovery protocol graceful restart (GR) processing method and device

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Embodiment Construction

[0032] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0033] In the following embodiments, a processing method for restarting the ND protocol is proposed. By carrying the master-standby switchover timeout time in the master-standby switchover protocol, the GR device performing the master-standby switchover and the neighbor GR device set a timeout period. Within the timeout period, Keep the topological relationship between the GR device and neighboring GR devices unchanged, and do not send detection packets, thus ensuring the normal processing of the ND protocol during GR. The processing methods of the GR of the ND protocol on the side of the GR device and the side of the neighbor GR device are described as follows.

[0034] figure 2 It is a flow char...

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Abstract

The invention discloses a neighbor discovery protocol graceful restart (GR) processing method and a device. The method comprises the steps that: GR equipment is determined to carry out active-standby switching, and messages used for informing neighbor GR equipment that the GR equipment carries out the active-standby switching is sent to the neighbor GR equipment; the GR equipment starts a timer to start timing, wherein the time of the timer of the GR equipment is not shorter than the time required by the active-standby switching of the GR equipment; and the GR equipment does not send reachability detection message before the timer exceed the time, and the active-standby switching of the GR equipment is completed. Through the neighbor discovery protocol graceful restart processing method and the device, the GR process is ensured to be successfully completed.

Description

technical field [0001] The present invention relates to the communication field, in particular to a processing method and device for a graceful restart of a Neighbor Discovery (Neighbor Discovery, ND for short) protocol. Background technique [0002] With the increasing depletion of IPv4 addresses, the deployment of a large number of IPv6 networks is gradually put on the agenda. Among the IPv6 protocols, the ND protocol is a brand-new protocol, which implements the IPv4 Address Resolution Protocol (ARP), All the functions of the router discovery part and the redirection part in the Internet Control Message Protocol (Internet Control Message Protocol, ICMP for short), and have a neighbor unreachable detection mechanism. When an IPv6 node appears on the network, other IPv6 nodes on the directly connected link can discover it through the ND protocol, and then obtain its link layer address. [0003] In the ND protocol, the relationship table between the IPv6 address and the lin...

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Application Information

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IPC IPC(8): H04L12/24H04L12/56H04L45/02
Inventor 李洪涛谭云桥吴坤峰
Owner ZTE CORP
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