| Description | Each entry in this table represents a Soft
Permanent Virtual Channel Connection (Soft PVCC)
originating at a switch interface.
A Soft PVCC is a VCC that is:
- provisioned at the originating (source)
interface of the connection
- established by signalling procedures
across a network to a destination interface.
A row in the atmVclTable must be created,
defining a VCL on the source interface, prior to
creating an atmSoftPVccEntry row. The row in the
atmVclTable must be active prior to activating the
atmSoftPVccEntry row.
The contents of this table reflect only the
characteristics unique to a Soft PVCC. The traffic
parameters are defined in the VCL row for the source
interface, as specified in the ATOMMIB (RFC1695) and
the forthcoming addition, the Supplemental ATOMMIB.
Note that the atmSigDescrParamTable contains some objects
such as the AAL parameters, Broadband high layer
information and Broadband low layer information
elements which are used to carry end-to-end information.
For this reason, these objects are not relevant to Soft
PVCCs.
When a row is made active, an attempt is made
to set up a switched connection to an interface at
the destination switch. No objects (other than
atmSoftPVccRowStatus) can be set while the row is
active.
At the destination, the VCL may be defined (but
not cross-connected) prior to arrival of the Setup
request.
The combination of ifIndex, atmVclVpi, and atmVclVci
specified in the index clause of this entry serves to
identify the VCL on the source interface. The
atmSoftPVccLeafReference object aids in distinguishing
between leaves of a point-to-multipoint Soft PVCC. |