Method and device for refreshing multicast entry

Abstract

The invention discloses a method and device for refreshing multicast table items. The method includes: the network device determines the KEY, port list, and update type corresponding to the currently obtained table items; when the downlink channel corresponding to the hardware forwarding chip is blocked , the network device judges whether the KEY corresponding to the entry exists in the offset hash table; if it exists, the network device determines the merged port list and the merged update type, and uses the merged port list to replace the KEY in Offset the corresponding port list in the hash table, and use the merged update type to replace the update type corresponding to the KEY in the offset hash table; when the downlink channel corresponding to the hardware forwarding chip is not blocked, the network device Sending the KEY, update type, and port list recorded in the offset hash table to the hardware forwarding chip. In the embodiment of the present invention, the number of entries sent to the hardware forwarding chip can be reduced, and the convergence speed of traffic can be improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and equipment for refreshing multicast entries. Background technique [0002] At present, large data centers are beginning to use new technologies such as FCoE (Fiber Channel over Ethernet, Fiber Channel over Ethernet) to integrate storage transmission and IP transmission into Ethernet connections, while the standard STP (Spanning Tree Protocol, Spanning Tree Protocol) will no longer It is suitable for the expansion of converged network or super-large data center. As the adoption rate of FCoE increases, TRILL (Transparent Interconnection of Lots of Links, transparent interconnection of multiple links) can replace the STP commonly used on Layer 2 networks. [0003] In a TRILL network, network devices need to calculate multiple multicast trees rooted at different RBs (Router Bridges). Different multicast trees use different topological structures, and each multicas...

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Problems solved by technology

[0002] At present, large data centers are beginning to use new technologies such as FCoE (Fiber Channel over Ethernet, Fiber Channel over Ethernet) to integrate storage transmission and IP transmission into Ethernet connections, while the standard STP (Spanning Tree Protocol, Spanning Tree Protocol) will no longer Suitable for the expansion of converged network or super large data center

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