MSTP Notes

  • I configured VLANs, assigned ports to them, configured VTP domain to be the same on both switches, configured trunks, configured MST region with its name, revision number and vlan-to-instance mapping… but I couldn’t see changes when I issue spanning-tree mst {instance} root primary :
  • then I found the problem: I didn’t choose MST as the spanning-tree mode!After that, previous “root primary” configuration takes effect.
  • to check results: show spanning-tree mst configuration, show spanning-tree mst {instance}
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