CISCO-VLAN-MEMBERSHIP-MIB :: vmMembershipSummaryExtPorts

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › CISCO-VLAN-MEMBERSHIP-MIB › vmMembershipSummaryExtPorts

vmMembershipSummaryExtPorts

Module: CISCO-VLAN-MEMBERSHIP-MIB

OID (symbolic): CISCO-VLAN-MEMBERSHIP-MIB::vmMembershipSummaryExtPorts

OID (numeric): 1.3.6.1.4.1.9.9.68.1.2.3.1.2

Node type: OBJECT-TYPE

Type: CiscoPortList

Access: read-only

Description: The set of the device's member ports that belong to the VLAN. It has the VLAN membership information of up to 2k ports with the port number starting from the information indicated in vmMembershipPortRangeIndex object of the same row. For example, if the value of vmMembershipPortRangeIndex is 'twoKto4K', the port number indicated in this object starting from 2049 and ending to 4096.

A port number is the value of dot1dBasePort for the port in the BRIDGE-MIB (RFC 1493).

What is vmMembershipSummaryExtPorts?

This read-only CiscoPortList value holds up to 2048 ports of VLAN membership data starting from the port number indicated by vmMembershipPortRangeIndex in the same row, so a value of 'twoKto4K' means the bitmap covers ports 2049 through 4096. An administrator uses this to check VLAN membership across the higher-numbered port ranges on large chassis switches where a single bitmap can't cover every port. For example, on a switch with more than 2048 ports, this object paired with the twoKto4K range index reveals membership for port 3000.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.68.1.2.3.1.2
snmpwalk -v2c -c public <target> CISCO-VLAN-MEMBERSHIP-MIB::vmMembershipSummaryExtPorts

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.68.1.2.3.1.2.1
snmpget -v2c -c public <target> CISCO-VLAN-MEMBERSHIP-MIB::vmMembershipSummaryExtPorts.1

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OID Breakdown

Upper-level ancestors (8 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.9ciscoCAT2600-MIB
1.3.6.1.4.1.9.9ciscoMgmtCISCO-SMI
Numeric OIDNameModule
1.3.6.1.4.1.9.9.68ciscoVlanMembershipMIBCISCO-VLAN-MEMBERSHIP-MIB
1.3.6.1.4.1.9.9.68.1ciscoVlanMembershipMIBObjectsCISCO-VLAN-MEMBERSHIP-MIB
1.3.6.1.4.1.9.9.68.1.2vmMembershipCISCO-VLAN-MEMBERSHIP-MIB
1.3.6.1.4.1.9.9.68.1.2.3vmMembershipSummaryExtTableCISCO-VLAN-MEMBERSHIP-MIB
1.3.6.1.4.1.9.9.68.1.2.3.1vmMembershipSummaryExtEntryCISCO-VLAN-MEMBERSHIP-MIB
1.3.6.1.4.1.9.9.68.1.2.3.1.2vmMembershipSummaryExtPortsCISCO-VLAN-MEMBERSHIP-MIB