CISCO-METRO-PHY-MIB :: cmPhyIfLoopback

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › CISCO-METRO-PHY-MIB › cmPhyIfLoopback

cmPhyIfLoopback

Module: CISCO-METRO-PHY-MIB

OID (symbolic): CISCO-METRO-PHY-MIB::cmPhyIfLoopback

OID (numeric): 1.3.6.1.4.1.9.10.69.1.1.1.1.5

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: This object allows the management client to configure loopback for the client side or trunk side interfaces.

'noLoop' - No Loopback present. 'diagnosticLoop' - This is an internal loopback, where the data stream is looped from the transmit to receive section. It is used for hardware debug, bring-up and diagnostics. 'lineLoop' - In this mode, the receive data stream is looped back to the transmit side. 'otherLoop' - This indicates loopbacks not defined here.

The default value of this object will be 'noLoop'.

What is cmPhyIfLoopback?

A read-write control that configures the loopback mode (e.g., no loopback or internal diagnostic loopback) on a client-side or trunk-side physical interface for testing purposes.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.10.69.1.1.1.1.5
snmpwalk -v2c -c public <target> CISCO-METRO-PHY-MIB::cmPhyIfLoopback

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.9.10.69.1.1.1.1.5.1
snmpget -v2c -c public <target> CISCO-METRO-PHY-MIB::cmPhyIfLoopback.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.9.10.69.1.1.1.1.5.1 i <value>

Start monitoring Cisco Metro Ethernet / DWDM optical switches with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CISCO-METRO-PHY-MIB::cmPhyIfLoopback OID value, configure state conditions and alerts, and monitor any Cisco Metro Ethernet / DWDM optical switches from a single console.

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
1.3.6.1.4.1.9.10ciscoExperimentCISCO-SMI
Numeric OIDNameModule
1.3.6.1.4.1.9.10.69ciscoMetroPhyMIBCISCO-METRO-PHY-MIB
1.3.6.1.4.1.9.10.69.1ciscoMetroPhyMIBObjectsCISCO-METRO-PHY-MIB
1.3.6.1.4.1.9.10.69.1.1cmPhyIfCISCO-METRO-PHY-MIB
1.3.6.1.4.1.9.10.69.1.1.1cmPhyIfTableCISCO-METRO-PHY-MIB
1.3.6.1.4.1.9.10.69.1.1.1.1cmPhyIfEntryCISCO-METRO-PHY-MIB
1.3.6.1.4.1.9.10.69.1.1.1.1.5cmPhyIfLoopbackCISCO-METRO-PHY-MIB