FC-to-queue ID map

Eight FCs are supported on 7210 SAS devices. Each of these FCs is mapped to a specific queue. By mapping FCs to different queues, the differential treatment is imparted to various classes of traffic.

On these platforms there are only eight queues available at the port level. These eight queues are created by default per port. Users cannot create or delete the queues or the queue ID. Only the queue parameters can be changed. The queue ID is not a configurable entity and queue ID 1 to 8 are, by default, used to identify these eight queues available on the port. The eight queues are available both on the access and access-uplink ports. Queue parameters for these eight queues can be configured as part of the access-egress QoS policy which is applied on the access ports and network-queue policy which is applied on the access-uplink ports.

The queue IDs 1 to 8 are assigned to each of the eight queues. Queue ID 8 is the highest priority and queue ID 1 is the lowest priority. FCs are correspondingly mapped to these queue IDs according to their priority. The following table describes the system defined map.