All MIBs › GENERIC-3COM-VLAN-MIB-1-0-6 › a3ComNextAvailableVirtIfIndex
a3ComNextAvailableVirtIfIndex
Module: GENERIC-3COM-VLAN-MIB-1-0-6
OID (symbolic): GENERIC-3COM-VLAN-MIB-1-0-6::a3ComNextAvailableVirtIfIndex
OID (numeric): 1.3.6.1.4.1.43.10.1.14.3.1
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: The value of the next available virtual ifIndex. This object is used by an NMS to select an index value for row-creation in tables indexed by ifIndex. The current value of this object is changed to a new value when the current value is written to an agent's table, that is indexed by ifIndex. Row creation using the current value of this object, allocates a virtual ifIndex. Note the following:
1. A newly created row does not have to be active(1) for the agent to allocate the virtual ifIndex.
2. Race conditions between multiple NMS's end when a row is created. Rows are deemed created when a setRequest is successfully committed (i.e. the errorStats is noError(0)).
3. An agent that exhausts its supply of virual ifIndex values returns zero as the value of this object. This can be used by an NMS as an indication to deleted unused rows and reboot the device.
What is a3ComNextAvailableVirtIfIndex?
This value returns the next available virtual ifIndex that a management station can use when creating a new row in a table indexed by ifIndex. It exists so an NMS doesn't have to guess or hunt for a free index value when provisioning a new virtual interface such as a VLAN interface. For example, after reading a value of 4001 here, the NMS would use ifIndex 4001 for the new VLAN interface it is about to create.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.43.10.1.14.3.1 snmpwalk -v2c -c public <target> GENERIC-3COM-VLAN-MIB-1-0-6::a3ComNextAvailableVirtIfIndex
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.43.10.1.14.3.1.1 snmpget -v2c -c public <target> GENERIC-3COM-VLAN-MIB-1-0-6::a3ComNextAvailableVirtIfIndex.1
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OID Breakdown
Upper-level ancestors (11 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 |
| 1.3.6.1.4.1.43 | a3Com | A3COM-AUDL-R1-MIB |
| 1.3.6.1.4.1.43.10 | generic | A3Com-products-MIB |
| 1.3.6.1.4.1.43.10.1 | genExperimental | GENERIC-3COM-TRUNK-MIB |
| 1.3.6.1.4.1.43.10.1.14 | genVirtual | GENERIC-3COM-VLAN-MIB-1-0-1 |
| 1.3.6.1.4.1.43.10.1.14.3 | a3ComVirtualGroup | GENERIC-3COM-VLAN-MIB-1-0-1 |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.43.10.1.14.3.1 | a3ComNextAvailableVirtIfIndex | GENERIC-3COM-VLAN-MIB-1-0-6 |