| Description | The Frame Relay PVC Connect Table is used to
model the bi-directional PVC segment flows
including: point-to-point PVCs, point-to-
multipoint PVCs, and multipoint-to-multipoint
PVCs.
This table has read-create access and is used to
associate PVC end-points together as belonging to
one connection. The frPVCConnectIndex is used to
associate all the bi-directional flows. Not all
implementations will support the capability of
creating/modifying/deleting PVCs using SNMP as a
feature of frame relay CNM service.
Once the entries in the frPVCEndptTable are
created, the following step are used to associate
the PVC end-points as belonging to one PVC
connection:
1) Obtain a unique frPVCConnectIndex
using the frPVCConnectIndexValue object.
2) Connect the PVC segment endpoints together
with the applicable frPVCConnectIndex value
obtained via frPVCConnectIndexValue. The
entries in this table are created by using
the frPVCConnectRowStatus object.
3) The agent will provide the value of the
corresponding instances of
frPVCEndptConnectIdentifier with the
frPVCConnectIndex value.
4) Set frPVCConnectAdminStatus to `active(1)' in
all rows for this PVC segment to turn the
PVC on.
For example, the Frame Relay PVC Connection Group
models a bi-directional, point-to-point PVC
segment as one entry in this table.
Frame Relay Frame Relay
Network Network
Low Port High Port
__________________________________
| |
_____| >> from low to high PVC flow >> |_____
| << from high to low PVC flow << |
|__________________________________|
The terms low and high are chosen to represent
numerical ordering of a PVC segment's endpoints
for representation in this table. That is, the
endpoint with the lower value of ifIndex is termed
'low', while the opposite endpoint of the segment
is termed 'high'. This terminology is to provide
directional information; for example the
frPVCConnectL2hOperStatus and
frPVCConnectH2lOperStatus as illustrated above.
If the Frame Relay Connection table is used to
model a unidirectional PVC, then one direction
(either from low to high or from high to low) has
its Operational Status equal to down.
A PVC segment is a portion of a PVC that traverses
one Frame Relay Network, and a PVC segment is
identified by its two end-points (UNI/NNI logical
port index value and DLCI index value) through one
Frame Relay Network. |