All MIBs › CM-FACILITY-MIB › cmEthernetNetPortOuterVlanLoopbackMask
cmEthernetNetPortOuterVlanLoopbackMask
Module: CM-FACILITY-MIB
OID (symbolic): CM-FACILITY-MIB::cmEthernetNetPortOuterVlanLoopbackMask
OID (numeric): 1.3.6.1.4.1.2544.1.12.4.1.7.1.33
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: This object allows specification of the outer VLANs to be looped back when port is in vlan(terminal/facility) loopback configuration. Only 3 VLANs can be specified for vlan loopback. The various bit positions are: 1 Outer VLAN 1 Loopback Enabled 2 Outer VLAN 2 Loopback Enabled 4 Outer VLAN 3 Loopback Enabled Value of 0 means that no VLANs are enabled.
What is cmEthernetNetPortOuterVlanLoopbackMask?
This read-write INTEGER (0..16) is a bitmask selecting which of up to three configured outer VLANs get looped back when the Ethernet Network Port is in VLAN (terminal/facility) loopback mode, with bit 1 for Outer VLAN 1, bit 2 for VLAN 2, and bit 4 for VLAN 3; a value of 0 means no VLANs are looped. It matters because loopback testing needs to be scoped precisely to specific customer VLANs on a shared port, so other VLANs' traffic isn't disrupted by the test. For example, setting cmEthernetNetPortOuterVlanLoopbackMask to 5 (bits 1 and 4) would loop back only Outer VLAN 1 and Outer VLAN 3 while leaving VLAN 2's traffic passing through normally.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2544.1.12.4.1.7.1.33 snmpwalk -v2c -c public <target> CM-FACILITY-MIB::cmEthernetNetPortOuterVlanLoopbackMask
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2544.1.12.4.1.7.1.33.1 snmpget -v2c -c public <target> CM-FACILITY-MIB::cmEthernetNetPortOuterVlanLoopbackMask.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.2544.1.12.4.1.7.1.33.1 i <value>
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OID Breakdown
Upper-level ancestors (9 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.2544 | advaMIB | ADVA-MIB |
| 1.3.6.1.4.1.2544.1 | products | ADVA-MIB |
| 1.3.6.1.4.1.2544.1.12 | fsp150cm | ADVA-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2544.1.12.4 | cmFacilityMIB | CM-FACILITY-MIB |
| 1.3.6.1.4.1.2544.1.12.4.1 | cmFacilityObjects | CM-FACILITY-MIB |
| 1.3.6.1.4.1.2544.1.12.4.1.7 | cmEthernetNetPortTable | CM-FACILITY-MIB |
| 1.3.6.1.4.1.2544.1.12.4.1.7.1 | cmEthernetNetPortEntry | CM-FACILITY-MIB |
| 1.3.6.1.4.1.2544.1.12.4.1.7.1.33 | cmEthernetNetPortOuterVlanLoopbackMask | CM-FACILITY-MIB |