Route calculation method and device in a trill network

Abstract

The invention discloses a routing computation method and equipment in a TRILL (Transparent Interconnection of Lots of Links) network. The method comprises the following steps of: generating an LSP (Link State Protocol) message of a pseudo node by DRB (Designed Router Bridge) equipment, wherein the LSP message carries topology information corresponding to RB (Router Bridge) equipment with a port type of a trunk port or a hybrid port; sending the LSP message of the pseudo node to each RB equipment of the TRILL network by the DRB equipment; and utilizing the topology information carried by the LSP message to carry out computation routing by each RB equipment which receives the LSP message. According to the invention, whether the port type of the corresponding port of the DRB equipment is an access port or not, a transmission path is not wasted, so that the message forwarding efficiency of the TRILL network is improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a route calculation method and equipment in a TRILL network. Background technique [0002] TRILL (Transparent Interconnection of Lots of Links, transparent interconnection of multiple links) network is an L2 (layer 2) network standard recommended by IETF (Internet Engineering Task Force, Internet Engineering Task Force). At present, large data centers are beginning to use new technologies such as FCoE (Fibre Channel over Ethernet, Fiber Channel over Ethernet) to integrate storage transmission and IP transmission into Ethernet connections. Since STP (Spanning Tree Protocol, Spanning Tree Protocol) will no longer be suitable for converged networks or super-large The expansion of the data center, but the TRILL network is very suitable, thus making the TRILL network more and more important. [0003] In a TRILL network, each RB (RouterBridge, routing bridge) device interacts wi...

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Problems solved by technology

[0005] However, it is stipulated in the TRILL standard that when the port corresponding to the DRB (DesignatedRouterBridge, designated routing bridge) is an access (access) port, the LSP message of the pseudo-node will be set as an overload (overload) mark, or the pseudo-node will not be sent At this time, it indicates that the pseudo-node is not connected to other RB devices on this link; therefore, each RB device will not have a route to the pseudo-node when using the LSP message for route calculation, thus wasting transmission path, resulting in a decrease in packet forwarding efficiency on the TRILL network

For example, in figure 1 In the TRILL network shown, RBb will not generate a route from RBb to RBa' to RBe. Assuming that the ports corresponding to RBb and RBe are not access ports, the transmission path between RBb to RBa' to RBe will be wasted

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