Message forwarding method and device

Abstract

Disclosed in the present application are a method and device for message forwarding. The method includes: an access device receives a first message which is an Ethernet message; the access device looks up a matched equal-cost path from equal-cost multi-path forwarding items, according to the destination MAC address of the Ethernet message, and the multi-path forwarding items include: the virtual MAC address corresponding to a gateway aggregation group, the identification of each gateway device in the gateway aggregation group and the out interface corresponding to the identification of each gateway device respectively; the identification is used for uniquely identifying the gateway device in a large layer 2 network; if N matched equal-cost paths are found, the first message is encapsulated as a second message according to the first path in the N matched equal-cost paths, and the second message which is a large layer 2 protocol message is forwarded according to the out interface of the first path; N is an integer larger than 1.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a message forwarding method and device. Background technique [0002] Transparent Interconnection of lots of links (English: Transparent Interconnection of lots of links, abbreviation: TRILL) is a Layer 2 forwarding technology used to realize the interconnection between data centers. [0003] figure 1 This is a typical networking diagram of TRILL. Nodes in a TRILL network are called Router Bridges (English: Router Bridge, abbreviated as RB). In a typical TRILL network, the RB at the core layer can be configured as a Layer 3 gateway, such as figure 1 The four nodes in the upper layer are used to realize message forwarding in this data center and message forwarding with other data centers; RB (hereinafter referred to as access device) at the access layer is used to connect user-side devices, Such as figure 1 Five nodes in the middle and lower layers. According to the relation...

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Problems solved by technology

[0007] The present invention provides a method and device for message forwarding, which are used to solve the problem that in the prior art, due to three-layer forwarding, what the access device learns is the corresponding relationship between the virtual MAC address, virtual nickname and port of the gateway aggregation group, and based on The MAC address table performs packet forwarding processing, which may cause technical problems in the failure of the RPF check

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