All MIBs › CROUTE-MIB › drIpInterfaceLowerIfAlias
drIpInterfaceLowerIfAlias
Module: CROUTE-MIB
OID (symbolic): CROUTE-MIB::drIpInterfaceLowerIfAlias
OID (numeric): 1.3.6.1.4.1.81.31.6.1.1.4
Node type: OBJECT-TYPE
Type: DisplayString
Access: read-write
Description: This object is an 'alias' name for the lower-layer interface on top of which this IP interface is defined. The alias is specified by the network manager, and provides a non-volatile 'handle' for the lower-layer interface. The semantics of the object are similar to the semantics of the ifAlias object, defined by the Interfaces MIB. At the time when this Madge MIB object was defined, the latest release of the Interfaces MIB was draft-ietf-ifmib-mib-05.txt. The purpose is to support all methods (static or dynamic) for creation of interfaces and to allow creation of IP table entries without the need of the layer 2 interface to be present on the device at the time of the creation. It is assumed that some implementation dependent mechanisms allow the IP application to be informed about the creation of new lower layer interfaces.
What is drIpInterfaceLowerIfAlias?
This is an administrator-assigned alias name, up to 16 characters, identifying the lower-layer interface underneath a specific IP interface entry, mirroring the standard ifAlias semantics. It gives network staff a stable, human-chosen handle for the physical or logical port beneath an IP address, useful when the underlying interface numbering is not memorable. For example, an admin might set this alias to WAN-Link1 under the IP interface carrying the router's internet-facing address so it's identifiable without cross-referencing ifIndex tables.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.81.31.6.1.1.4 snmpwalk -v2c -c public <target> CROUTE-MIB::drIpInterfaceLowerIfAlias
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.81.31.6.1.1.4.1 snmpget -v2c -c public <target> CROUTE-MIB::drIpInterfaceLowerIfAlias.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.81.31.6.1.1.4.1 s <value>
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OID Breakdown
Upper-level ancestors (7 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 |
| 1.3.6.1.4.1.81 | lannet | GEN-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.81.31 | croute | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.6 | drIpRoute | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.6.1 | drIpInterfaceTable | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.6.1.1 | drIpInterfaceEntry | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.6.1.1.4 | drIpInterfaceLowerIfAlias | CROUTE-MIB |