Q: How do I display the list of ports and their VLANs using SNMP?

A:

I use the SNMPWALK program, part of the NET-SNMP distribution.

To display list of ports and their VLANs:

snmpwalk -c readcommunity -v 1 switchname .1.3.6.1.4.1.9.9.68.1.2.2.1.2

To display the Cisco port description:

snmpwalk -c readcommunity -v 1 switchname .1.3.6.1.2.1.2.2.1.2

To display the port descriptions you configured:

snmpwalk -c readcommunity -v 1 switchname .1.3.6.1.4.1.9.2.2.1.1.28