Assigning a Class of Service to this Role

How a packet is treated as it transits the link can be configured in the Class of Service (CoS). It is through a CoS that Quality of Service (QoS) is implemented. A CoS can be configured for the following values:

• 802.1p priority
• IP Type of Service (ToS) rewrite value
• Priority Transmit Queue (TxQ) along with a forwarding behavior
• Inbound rate limiter per transmit queue
• On the S- and K-Series, outbound rate limiter per transmit queue
• Outbound rate shaper per transmit queue

CoS configurations are identified by a numeric value between 0 - 255. 0 - 7 are fixed 802.1p CoS configurations. CoS configurations 8 - 255 are user configurable. Policy uses the cos option followed by the CoS configuration ID value to associate a CoS with a policy role.

See for a complete discussion of QoS configuration.

The following example creates a policy profile with a profile-index value of 1 and associates with the profile a user configured CoS 8:

System(rw)->set policy profile 1 cos-status enable cos 8