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mnagel's avatar
mnagel
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8 years ago

snmp indexing

Cisco and other vendors support community indexing (SNMPv1/v2c) and context indexing (SNMPv3) for some MIBs that otherwise have only one apparent index.  This is true, for example, for the BRIDGE-M...
mnagel's avatar
mnagel
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8 years ago

This is a special case for some MIBs that predated the existence of VLANs, like the BRIDGE-MIB (see: https://www.cisco.com/c/en/us/support/docs/ip/simple-network-management-protocol-snmp/40367-camsnmp40367.html).  It is not an OID subtree, they are parallel versions of the same OID subtree selected based on the SNMPv1/2c community index or SNMPv3 context.  Without support for this, it is not possible to check for per-VLAN TCN issues, among other critical items to monitor in a switched environment.

Regards,
Mark