CTIF-EXT-MIB :: ctVirtualIfIndex

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCTIF-EXT-MIBctVirtualIfIndex

ctVirtualIfIndex

Module: CTIF-EXT-MIB

OID (symbolic): CTIF-EXT-MIB::ctVirtualIfIndex

OID (numeric): 1.3.6.1.4.1.52.4.3.3.7.1.1.1

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-only

Description: Returns the virtual If Index.

What is ctVirtualIfIndex?

This read-only integer returns the identifier of a virtual interface, such as an ATM logical circuit layered over a physical port. An admin uses it to identify a specific virtual interface entry when correlating it with other tables. For example, an admin uses ctVirtualIfIndex to identify which virtual interface entry corresponds to a specific ATM PVC configured on the device.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.4.3.3.7.1.1.1
snmpwalk -v2c -c public <target> CTIF-EXT-MIB::ctVirtualIfIndex

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.52.4.3.3.7.1.1.1.1
snmpget -v2c -c public <target> CTIF-EXT-MIB::ctVirtualIfIndex.1

Start monitoring Cabletron/Enterasys switch/hub (legacy, per-port IF-MIB extension) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CTIF-EXT-MIB::ctVirtualIfIndex OID value, configure state conditions and alerts, and monitor any Cabletron/Enterasys switch/hub (legacy, per-port IF-MIB extension) from a single console.

OID Breakdown

Upper-level ancestors (10 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
1.3.6.1.4.1.52cabletronCabletron-MIB
1.3.6.1.4.1.52.4mibsCTRON-AP3000-MIB
1.3.6.1.4.1.52.4.3ctronExtnCTRON-MIB-NAMES
1.3.6.1.4.1.52.4.3.3ctronMib2CTRON-MIB-NAMES
Numeric OIDNameModule
1.3.6.1.4.1.52.4.3.3.7ctVirtualCTIF-EXT-MIB
1.3.6.1.4.1.52.4.3.3.7.1ctVirtualIfTableCTIF-EXT-MIB
1.3.6.1.4.1.52.4.3.3.7.1.1ctVirtualIfEntryCTIF-EXT-MIB
1.3.6.1.4.1.52.4.3.3.7.1.1.1ctVirtualIfIndexCTIF-EXT-MIB