Catalyst 9300 Stack - SNMP

[dafawe]

We have a stack of two Catalyst 9300X switches running in a stack, with Meraki CS firmware.

As usual for Catalyst switch stacks, they share a single management IP. This however makes it impossible to get the SNMP information for both switches.

When querying the management IP, only the information of one stack member with its ports will be returned. It's impossible to retrieve the SNMP MIBs of the second stack member, since it doesn't have a dedicated IP.

Normally, a stack of Meraki switches would have individual IPs for each switch, and a stack of Catalyst switches running IOS would provide SNMP data for all switch ports in the stack under the single management IP.

Only when running a Catalyst stack with Meraki CS firmware, this doesn't seem to work.

Has anyone figured out a way around this issue?

[aleabrahao]

You can try using the APIs instead of SNMP to provide detailed visibility into all stack members and their ports.

GET /devices/{serial}/switchPorts
GET /networks/{networkId}/devices
GET /devices/{serial}

Otherwise I suggest requesting a feature request.

[joey.debra · Accepted solution]

Hmm that would be strange. So if you do a SNMP walk for the OID's that contain interface params, wouldn't you get ALL the interfaces, including each stackmember?

[dafawe]

You're right: When running a SNMP walk, it retrieves the interfaces of the whole stack, not just one switch.

Then the bug must be in my monitoring software, not on the Meraki side.

[JordanEil]

It's not just you - I had the same issue.

Problem was escalated and Cisco stated they reproduced - we've been waiting for a firmware update for the SNMP since.