| Description | The value of this object identifies a particular
conceptual row associated with the session identified by
casnSessionId. The conceptual row that this object points
to represents a port that is used to transport a session.
If the port transporting the session cannot be determined,
the value of this object will be zeroDotZero.
For example, suppose a session is established using an ATM
PVC. If the ifIndex of the ATM interface is 7, and the
VPI/VCI values of the PVC are 1, 100 respectively, then
the value of this object might be as follows:
casnNasPort.15 = atmVclAdminStatus.7.1.100
^ ^ ^ ^
| | | |
casnSessionId --+ | | |
ifIndex -------------------------+ | |
atmVclVpi ---------------------------+ |
atmVclVci ------------------------------+
where atmVclAdminStatus is the first accessible object
of the atmVclTable of the ATM-MIB. |