# Queues on Cisco Interface

The Queues on a Cisco Interface dialog box displays the following details:

Type

Maximum Number of messages in Queue

No of sub-Queues

Type (cQIfQType)

The type of queuing used in the Hold Queue.

First In First Out Queuing, Priority Queuing, Custom Queuing or Weighted Fair Queuing is used.

First In First Out Queuing implies that interface always transmits messages in the order they are received.

In Priority Queuing, messages are sort out by the use of access lists. Messages in a higher priority queue get preference over messages in a lower priority queue.

Custom queuing sort messages out by the use of access lists. Sub-queues are selected in round robin order as either the sub-queue is drained or a given number of octets is moved from the subqueue to the transmission queue.

Weighted Fair Queuing sorts messages by 'conversation', which is source-destination pair of addresses and sockets or ports, as defined by the network layer protocol.

Maximum Number of messages in Queue (cQIfTxLimit)

The maximum number of messages placed into the hardware transmission queue. This is a first come first serve queue, fed by the hold queue.

No of sub-Queues (cQIfSubqueues)

Number of sub-queues of which the hold queue is built. This is a constant for each value of cQIfQType.