CTIF-EXT-MIB :: ctIfNumber

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCTIF-EXT-MIBctIfNumber

ctIfNumber

Module: CTIF-EXT-MIB

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

OID (numeric): 1.3.6.1.4.1.52.4.3.3.2.1.1.1

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-only

Description: This defines the interface that is being described. This is the same as ifIndex.

What is ctIfNumber?

This read-only integer identifies the interface being described, matching the standard ifIndex value. An admin uses it as the join key between this extension MIB's per-interface data and the standard ifTable entry. For example, an admin matches ctIfNumber 4 to ifIndex 4 in the standard interfaces table to pull the matching ifDescr and ifOperStatus for the same port.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.4.3.3.2.1.1.1
snmpwalk -v2c -c public <target> CTIF-EXT-MIB::ctIfNumber

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.52.4.3.3.2.1.1.1.1
snmpget -v2c -c public <target> CTIF-EXT-MIB::ctIfNumber.1

SNMPv3 example:

snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> ctIfNumber.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::ctIfNumber 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
1.3.6.1.4.1.52.4.3.3.2ctIfCTIF-EXT-MIB
1.3.6.1.4.1.52.4.3.3.2.1ctIfTableCTIF-EXT-MIB
1.3.6.1.4.1.52.4.3.3.2.1.1ctIfEntryCTIF-EXT-MIB
1.3.6.1.4.1.52.4.3.3.2.1.1.1ctIfNumberCTIF-EXT-MIB