Spanning tree to Cisco Switch

[mspdog22]

We are running some ALE 6450 and getting this error when they are connected to a Cisco Nexus Switch.

Below is our config and error log.

panning Tree Path Cost Mode : AUTO
Vlan STP Status Protocol Priority
-----+----------+--------+--------------
1 ON RSTP 32769 (0x8001)
10 ON RSTP 32778 (0x800a)
500 ON RSTP 33268 (0x81f4)
3000 ON RSTP 35768 (0x8bb8)

Spanning Tree Global Parameters
Current Running Mode : 1x1,
Current Protocol : N/A (Per VLAN),
Path Cost Mode : AUTO,
Auto Vlan Containment : N/A
Cisco PVST+ mode : Enabled
Vlan Consistency check: Disabled




SAT DEC 21 16:21:07 2024 STP info Topology changed on VLAN/STP id 10
SAT DEC 21 16:21:07 2024 STP info Topology changed on VLAN/STP id 3000
SAT DEC 21 16:21:08 2024 STP info Topology changed on VLAN/STP id 1
SAT DEC 21 16:21:37 2024 STP info Topology changed on VLAN/STP id 500

SAT DEC 21 16:21:07 2024 STP info Topology changed on VLAN/STP id 10
SAT DEC 21 16:21:07 2024 STP info Topology changed on VLAN/STP id 3000
SAT DEC 21 16:21:08 2024 STP info Topology changed on VLAN/STP id 1
SAT DEC 21 16:21:37 2024 STP info Topology changed on VLAN/STP id 500

[silvio]

Your config with pvst+ is correct (if cisco uses the same pvst+).
TC is no error - this is the info that there is a changing. If you are receiving this message all the time than you have to find the source of it. Maybe there is realy a TC - or you have a misconfig. Difficult to say with this information.
BR Silvio