All MIBs › CROUTE-MIB › ipInterfaceLowerIfAlias
ipInterfaceLowerIfAlias
Module: CROUTE-MIB
OID (symbolic): CROUTE-MIB::ipInterfaceLowerIfAlias
OID (numeric): 1.3.6.1.4.1.81.31.1.2.1.3
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 ipInterfaceLowerIfAlias?
This read-write DisplayString, up to 16 characters, lets an admin assign a persistent alias name to the lower-layer interface underlying this IP interface, providing a stable handle independent of interface index numbering. An admin sets this so the IP interface configuration survives reordering of underlying physical or logical interfaces without breaking references. For example, aliasing the lower-layer interface as Uplink1 lets scripts and documentation refer to it by a stable name even if the interface's numeric index changes after a reboot.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.81.31.1.2.1.3 snmpwalk -v2c -c public <target> CROUTE-MIB::ipInterfaceLowerIfAlias
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.81.31.1.2.1.3.1 snmpget -v2c -c public <target> CROUTE-MIB::ipInterfaceLowerIfAlias.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.81.31.1.2.1.3.1 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 |
| 1.3.6.1.4.1.81.31.1 | ipRoute | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.1.2 | ipInterfaceTable | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.1.2.1 | ipInterfaceEntry | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.1.2.1.3 | ipInterfaceLowerIfAlias | CROUTE-MIB |