MST is the way to go. It was designed with that in mind. Check this: http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protoc ol/24248-147.html
You just need to be careful because there are two MST flavors running on cisco switches: pre-standard and standard. Regards, Antonio Soares, CCIE #18473 (RS/SP) [email protected] http://www.ccie18473.net -----Original Message----- From: cisco-nsp [mailto:[email protected]] On Behalf Of Victor Sudakov Sent: terça-feira, 8 de Julho de 2014 10:09 To: cisco-nsp Subject: [c-nsp] Divide large PVST domain? Colleagues, I have a train of about 20 C3560X switches connected successively. I know such a diameter is not good for STP, however, when I place the root bridge in the middle of the train, PVST still works more or less reliably. However, if I wanted to divide this single STP domain into several smaller ones, which way is best? I can define three geographical areas between which no loop is physically possible and which cannot have any redundant links between one another. Should I just configure a bpdufilter on the border switches to separate the areas, or is there a smarter way, maybe going for MST instead of PVST? Thanks in advance for any input. -- Victor Sudakov, VAS4-RIPE, VAS47-RIPN sip:[email protected] _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
