■The precedence for priority mapping is IP Precedence or DSCP Priority, and then Default Port Priority.
■IP Precedence and DSCP Priority cannot both be enabled. Enabling one of these priority types automatically disables the other.
When mapping layer 3/4 priorities to COS values through the web interface or CLI, the following parameters can be configured:
■Enable Priority Services – The current operating status for mapping for layer 3/4 priorities to COS values. The default is disabled.
■IP Precedence – IP Precedence mapping.
■Differentiated Services Code Point Mapping (DSCP) – DSCP mapping.
Web Interface: Enabling Priority Services
1.Open Switch Config ⇒ Class of Service ⇒ Layer 3/4 Traffic Prioritisation.
2.Select Enable Priority Services,
3.Select IP Precedence or DSCP.
4.Click Save.
FIGURE 3-28 The Switch Config ⇒ Class of Service Window for Enabling Priority Services
Command-line Interface: Enabling Priority Services
The following example enables IP Precedence service on the switch:
Console(config)#map ip precedence
Console(config)#
