Raymond Norton
asked on
Spanning Tree MST Topology / excessive changes
Debug info attached
I have configured a HP Procurve 3500 YL with the following Spanning Tree config:
spanning-tree
spanning-tree instance 2 vlan 109-285
spanning-tree instance 2 priority 0
spanning-tree priority 0
This config works well on other switches on our WAN. However, in this instance (only this switch), the topology count changes several times a minute. I believe it has something to do with ports 19 and 23. Each is configured with a single vlan and are directly connected to a Cisco 2960 switch. All others ports are connected to HP Aruba switches.
Ideas?
spanning-tree-debug
I have configured a HP Procurve 3500 YL with the following Spanning Tree config:
spanning-tree
spanning-tree instance 2 vlan 109-285
spanning-tree instance 2 priority 0
spanning-tree priority 0
This config works well on other switches on our WAN. However, in this instance (only this switch), the topology count changes several times a minute. I believe it has something to do with ports 19 and 23. Each is configured with a single vlan and are directly connected to a Cisco 2960 switch. All others ports are connected to HP Aruba switches.
Ideas?
spanning-tree-debug
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Why 2 uplinks. spanningtree will still detect you have a loop. just create a trunk port with both vlans on both sides.
ASKER
It should not detect a loop if a single, unique vlan is configured per port. We are doing vlan translation for a number of our schools (long story) and require individual ethernet ports for each vlan to do this.
Can you show the config for the ports at each end, please?
ASKER
I resolved the issue by finding a loop via lldp info on one of the school switches and creating an mst region for all vlans, except voip. I left the Cisco config in place to manage spanning-tree for those vlans.
ASKER
Port 19 (vlan 100) is connected to port 1 and port 23 (vlan 266) is connected to port 47
The Cisco is configured as pvst, which is a problem.
Looks like I need help to configure both the Procurve and Cisco to use mst