>From cisco to other vendor - (and cisco -> cisco Small BUS) always make sure that Vlan1 is allowed on any trunk links, as they often expect the BPDU's on this Vlan. Check that the Juniper doesn't think its ALSO the root.
-----Original Message----- From: cisco-nsp [mailto:[email protected]] On Behalf Of Crist J. Clark Sent: 28 January 2016 17:04 To: [email protected] Subject: [c-nsp] Nexus Blocking Single Port? I am seeing some STP wierdness from a Nexus 9396 (surprise, surprise, I know). I can't figure out why it's blocking one VLAN on a trunk to a Juniper switch, scea-phx-core1# sh span vl 3013 VLAN3013 Spanning tree enabled protocol rstp Root ID Priority 64453 Address 0023.04ee.be01 This bridge is the root Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 64453 (priority 61440 sys-id-ext 3013) Address 0023.04ee.be01 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Interface Role Sts Cost Prio.Nbr Type ---------------- ---- --- --------- -------- -------------------------------- Eth1/23 Back BLK 2 128.279 P2p I don't understand a lot of things going on here. It claims to be root, but then it's blocking ports? And how can you have a backup when this is the only port on the VLAN? -- Crist J. Clark _______________________________________________ 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/
