All MIBs › CROUTE-MIB › vlConfAlias
vlConfAlias
Module: CROUTE-MIB
OID (symbolic): CROUTE-MIB::vlConfAlias
OID (numeric): 1.3.6.1.4.1.81.31.3.1.1.2
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 vlConfAlias?
This read-write DisplayString, up to 16 characters, lets an admin assign a persistent alias to the lower-layer interface underlying a VLAN configuration entry, mirroring the alias objects used for IP and IPX interfaces elsewhere in this MIB. An admin sets this so references to a VLAN's underlying interface remain stable even if numeric indexing changes after a reboot. For example, aliasing a VLAN's underlying interface as Trunk1 gives management scripts a stable name independent of later renumbering.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.81.31.3.1.1.2 snmpwalk -v2c -c public <target> CROUTE-MIB::vlConfAlias
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.81.31.3.1.1.2.1 snmpget -v2c -c public <target> CROUTE-MIB::vlConfAlias.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.81.31.3.1.1.2.1 s <value>
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> vlConfAlias.1
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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 |
| 1.3.6.1.4.1.81.31.3 | layer2 | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.3.1 | vlConfTable | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.3.1.1 | vlConfEntry | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.3.1.1.2 | vlConfAlias | CROUTE-MIB |