I'd use these show& debug commands :
show spanning-tree
show lldp info remote-device
show lldp info local-device
show lacp
debug spanning-tree
debug lldp packet
would also like to know the firmware version on the switch. Best practices would be to check the LACP configuration on the uplink ports to ensure proper aggregation and redundancy also double-checking VLAN configurations on both the core and edge switches might help
Original Message:
Sent: Jan 15, 2024 04:45 AM
From: Ayoub Chabrouk
Subject: RPVST spanning tree issues,
I have a 2tier network with 2x5406rzl2 (VSF mode) connected to many 1xAruba switches 6200 in different IDF locations, all uplinks are LACP. // RVPST enabled on all ports,
all looks good until 1xIDF/Switch becomes unreachable and all ports/services connected to it go down.
to make things work, we put bpdu-filter on all ports, and we've noticed some services are reachable, but the switch itself is still not,
going through logs what I can notice is a lot of lldpd events, and I've also noticed that the 6200 switch is the root for all VLANs,
you will ask me about the priority assigned per VLAN, I've put core switch lower priority then all the other switch so I can have my core as root all the time.
- what do you think guys about that behavior?
- what are debug cmds I have to enable and show cmds needed to see what s going on,
- any best practice steps to follow?
to make things work, we put bpdu-filter on all ports, and we've noticed some services are reachable, but the switch itself is still not,