Spanning tree in fabric switches

摘要

One embodiment of the present invention provides a switch. The switch includes a packet processor and a spanning tree management module. The packet processor obtains information associated with a spanning tree from a message. The spanning tree management module, in response to the obtained information being superior to locally available information of the spanning tree, determines the port role of a local port of the switch for the spanning tree to be the root port and the port state of the local port for the spanning tree to be blocking.

主权项

1. A switch, comprising:
a packet processor configured to obtain information associated with a spanning tree from a notification message, wherein the switch participates in the spanning tree, and the obtained information includes a path cost to a root of the spanning tree; and spanning tree management circuitry configured to: determine whether the path cost in the obtained information is superior to a locally available path cost to the root; in response to determining that the path cost in the obtained information is superior to the locally available path cost,
set a port role of a first port of the switch to be a root port and a port state of the first port to be blocking for the spanning tree.