SNMP, Query dot1dStpPortState on Catalyst 2960-S

[clancyian]

Hi Community,

I would like to be able to query the dot1dStpPortState obect on the Catalyst 2960-S on our LAN . Im running firmware

c2960s-universalk9-mz.122-55.SE2.bin and according to the Cisco SNMP Object Navigator the object is supported (via the BRIDGE-MIB).

However when i query using snmpwalk from my workstation :

snmpwalk -v 2c -c bic-zua-ro 10.u.y.x 1.3.6.1.2.1.17.2.15.1.3

I recieve and error .

SNMPv2-SMI::mib-2.17.2.15.1.3 = No Such Instance currently exists at this OID

For the sake of comparison, querying our 4700 :

snmpwalk -v 2c -c bic-zua-ro 10.u.y.x 1.3.6.1.2.1.17.2.15.1.3

returns (as expected, cropped)

SNMPv2-SMI::mib-2.17.2.15.1.3.1 = INTEGER: 5

SNMPv2-SMI::mib-2.17.2.15.1.3.3 = INTEGER: 5

SNMPv2-SMI::mib-2.17.2.15.1.3.40 = INTEGER: 5

SNMPv2-SMI::mib-2.17.2.15.1.3.67 = INTEGER: 5

SNMPv2-SMI::mib-2.17.2.15.1.3.104 = INTEGER: 5

SNMPv2-SMI::mib-2.17.2.15.1.3.257 = INTEGER: 5

SNMPv2-SMI::mib-2.17.2.15.1.3.258 = INTEGER: 5

SNMPv2-SMI::mib-2.17.2.15.1.3.259 = INTEGER: 5

Is there some special configuration i need to do on our 2960's. The only snmp related settings i can see in the running config is snmp-server community. In this case :

snmp-server community bic-zua-ro RO

Thanks in advance for any comments/ assistance.

Rgds

Ian

[Vinod Arya]

Share your snmp configuration (show run | incl snmp) there might be a view. It should work as BRIDGE-MIB is supported.

You can try to walk the complete BRIDGE-MIB. Also need to be aware that dot1dStpPortTable is only populated for interfaces that have ifOperStatus as up.

You can also try to check it via # portAdditionalOperStatus.

-Thanks

[clancyian]

Hi Vinod,

Wow, thanks for your prompt reply. Output from filtered running config pasted below

TVS-Stack17#sh run | inclu snmp

snmp-server community bic-zua-ro RO

Interestingly when i walk the entire dot1dBridge (1.3.6.1.2.1.17) i recieve lots of data from both dot1dBase (1) and dot1dTp (4) but nothing from dot1dStp (2)

I tried portAdditionalOperStatus and did not recieve any response but got lots of data from its patent  portEntry (1)

Running show spann on the 2960 stack i can see various ports in forwarding and blocking start as i would expect.

Rgds,

Ian

[clancyian]

Vinod,

Thanks for your help. I just realised that i needed to put a valid vlan number before the communitry string. e.g. 10@bic-zua-ro

Rgds,
Ian