ifMainType

The type/protocol of interface. Specification of
the object is mandatory for all interfaces. This
value should be specified after the row creation
in the ifMainTable and before setting any other
object in this table. Once the type is specified,
it cannot be changed - the interface should be
deleted for changing the type of the interface.
              
The ethernetCsmacd(6), iso88025TokenRing(9), aal5(49),
async(84) and hdlc(118) are physical interfaces while
all other types are virtual or logical interfaces.
              
 Specific ifIndex ranges are reserved for different interface types.
 Creation of different types of interfaces is possible only within 
 their corresponding ifIndex range. So the ifMainType should be 
 configured corresponding to the  ifIndex range reserved for that 
 particular interface type.
              
For creation of physical interface types, it is mandatory to
specify the handle to the device driver using the ifAlias
object of the standard ifXTable before specifying the type.
This handle could be something like eth1 or /dev/abcd.
              
 pip interface type will be used vritual Provider Instance port in 
 PBB bridge mode. physical PIPs can be created using ethernetCsmacd .
              
 Following is the mapping of different port types and there ifmaintype values.
               
 External ports
 --------------
 Port:	    ifmaintype		Port type
 -------------------------------------------------------------------
 CNP- Ctagged         6 - customerNetworkPortCtagged   (9)
 CNP - Port based	 6 - customerNetworkPortPortBased (2)
 CNP- Stagged         6 - customerNetworkPortStagged   (3)
 PNP                  6 - providerNetworkPort          (1)
 PIP                  6 - providerInstancePort         (11)
 CBP                  6 - customerBackbonePort         (12)
UAP                  6 - uplinkAccessPort             (13)
              
              
 Internal ports
 --------------
 VIP 209 - virtualInstancePort     (10)
 PIP 248 - providerInstancePort    (11)
 CBP 209 - customerBackbonePort    (12)
SBP 209 - stationFacingBridgePort (14)
              
 brgPort will be used to create virtual PBB ports other than PIPs.
(ie) brgPort is used to create logical ports VIPs, CBPs and SBPs.
              
 The propVirtual type denotes properietary logical interfaces. These
 type of interfaces can be associated with a {physical interface, 
 switch instance} for the purpose of sharing the physical interface 
 to more than one context and thus realising Switch Instance Sharing 
 of a physical interface.

MIB

ARICENT-CFA-MIB

OID

.1.3.6.1.4.1.2076.27.1.4.1.2

Type

column

Access

readwrite

Status

current

Parent

ifMainEntry