CISCO-VIRTUAL-NW-IF-MIB Table View

This table contains one entry for each local virtual 
interface to a VSAN or VLAN, at most one such interface
per processor on a Supervisor or Line card managed by
the agent. Each such processor will have an entry in 
the entPhysicalTable ( from ENTITY-MIB ) and will have a 
unique PhysicalIndex. For e.g. if Line card has 
2 processors on it then each processor will have a
entry in the entPhysicaltable and each will have 
unique PhysicalIndex. It is possible that there can be
multiple VSAN's or VLAN's per processor, but the 
network manager can create only one virtual interface
for a VSAN and only one for a VLAN per physical entity
i.e. per processor on the card.
Note:Processor is represented as a physical entity in
the entPhysicalTable.
Each such interface has a unique ifIndex assigned by 
the agent. When requested to create an entry in this
table, the agent also creates a corresponding entry in
the ifTable of IF-MIB and also an entry in the 
cieIfInterfaceTable of CISCO-IF-EXTENSION-MIB.  Next, 
the agent fills in the values of virtualNwIfIndex, after
which the creation of the entry in this table completes.
The ciiIPIfAddressTable of CISCO-IP-IF-MIB can be used
to configure the IP addresses.  The ifTable and this
table can be used to monitor the interface. 
          
Entries in this table are created by network managers.
But the entries can be deleted either by the network
managers or will be deleted by the agent if the
corresponding VSAN or VLAN is deleted. 
An entry will be allowed to be created only if the 
corresponding VSAN or VLAN has been created.
The ifType for an created interface of type 'vsan(1)'
will be 'fibreChannel(56)' and of type 'vlan(2)' would
be  'ethernetCsmacd(6)'.