This attribute indicates the unshaped transmit queuing state of the
connection.
A value of common indicates that transmit traffic is being enqueued
onto the common transmit queue for this service category.
The txQueueLength attribute indicates the current length of the
common transmit queue.
A value of fifo indicates that transmit traffic is being queued in a
first-in-first-out basis for this service category. This is similar to
common queueing, but the txQueueLength attribute indicates the
number of cells in this connection queue. A value of fifo will only
be indicated for connections on ATM IP cards with
atmServiceCategory of nrtVbr or ubr.
A value of perVc indicates that transmit traffic is being enqueued
onto a per-VC queue for this connection.
A value of notApplicable indicates that transmit traffic is being
shaped for this connection, or that unshaped transmit queuing is not
applicable for this type of connection. Transmit traffic for a shaped
connection is enqueued onto a per-VC queue, but this attribute is
only applicable for unshaped connections. Unshaped transmit
queuing is not applicable for basic Vpts.