A Processing Method of Rapid Spanning Tree Protocol Applied to Single Ring Network Topology

Abstract

Disclosed is a processing method for applying a rapid spanning tree protocol to a single ring network topology, comprising: adding two additional protocol fields in a BPDU: field 1 indicating the protocol type, field 2 indicating topology change information, if a port is invalid, setting the value of the field 2 to be true; otherwise setting it to be false; a switch, after receiving the expanded BPDU, on the one hand, matching the field 1, and when one or more switches do not support or are not configured into a single ring network operating mode, all the other switches on the network automatically operating the standard rapid spanning tree protocol so as to cooperatively work; and on the other hand, judging the value of the field 2, if the value is true, an RSTP state machine sending the BPDU with the true field value so as to notify a counter-side switch of link failure on the network, and each switch conducting rapid fault restoration. The method can shorten the self-healing time of a ring network when a link in a single ring network topology is invalid, and at the same time can be automatically compatible with a standard RSTP, thereby meeting the requirements of various communication services.

Description

technical field [0001] The invention relates to communication network redundancy technology, in particular to a rapid spanning tree protocol applied to single-ring network topology. Background technique [0002] Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and Multiple Spanning Tree Protocol (MSTP) are topology management protocols applied to Layer 2 communication networks. Layer 2 switches run the Spanning Tree Protocol and send bridge protocol data units (Bridge Protocol Data Unit, BPDU) to each other. The main information in the BPDU includes STP version, BPDU type, identification field, root bridge ID, root path cost, and designated bridge ID , the designated port ID and each time value, wherein the root bridge ID, the root path cost, the designated bridge ID, and the designated port ID form a message priority vector, which is the main basis for RSTP comparison and calculation. The switch obtains the information in the BPDU, and cuts the network to...

AI Technical Summary

Problems solved by technology

[0011] It can be seen that when the RSTP protocol is used to manage the topology of a single ring network, the integrity and security of the network are guaranteed, but it cannot be processed according to the characteristics of the ring network topology and different types of packets, resulting in a long self-healing time of the ring network, which cannot meet the requirements. Ring network fast self-healing requirements

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