All MIBs › CISCO-VTP-MIB › vtpVlanIsCRFBackup
vtpVlanIsCRFBackup
Module: CISCO-VTP-MIB
OID (symbolic): CISCO-VTP-MIB::vtpVlanIsCRFBackup
OID (numeric): 1.3.6.1.4.1.9.9.46.1.3.1.1.16
Node type: OBJECT-TYPE
Type: TruthValue
Access: read-only
Description: True if this VLAN is of type trCrf and also is acting as a backup trCrf for the ISL distributed BRF
What is vtpVlanIsCRFBackup?
This read-only TruthValue object indicates whether a Token Ring Concentrator Relay Function (trCrf) VLAN is also serving as the backup trCrf for the ISL distributed Bridge Relay Function (BRF). An administrator managing legacy Token Ring switching topologies checks this to identify which trCrf VLAN would take over if the primary backup relationship needs verification. For example, seeing vtpVlanIsCRFBackup as true for a particular VLAN confirms that VLAN is standing by as the backup relay for the distributed BRF.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.46.1.3.1.1.16 snmpwalk -v2c -c public <target> CISCO-VTP-MIB::vtpVlanIsCRFBackup
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.46.1.3.1.1.16.1 snmpget -v2c -c public <target> CISCO-VTP-MIB::vtpVlanIsCRFBackup.1
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OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4.1.9 | cisco | CAT2600-MIB |
| 1.3.6.1.4.1.9.9 | ciscoMgmt | CISCO-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.9.9.46 | ciscoVtpMIB | CISCO-VTP-MIB |
| 1.3.6.1.4.1.9.9.46.1 | vtpMIBObjects | CISCO-VTP-MIB |
| 1.3.6.1.4.1.9.9.46.1.3 | vlanInfo | CISCO-VTP-MIB |
| 1.3.6.1.4.1.9.9.46.1.3.1 | vtpVlanTable | CISCO-VTP-MIB |
| 1.3.6.1.4.1.9.9.46.1.3.1.1 | vtpVlanEntry | CISCO-VTP-MIB |
| 1.3.6.1.4.1.9.9.46.1.3.1.1.16 | vtpVlanIsCRFBackup | CISCO-VTP-MIB |