Cisco 7609-S Software Configuration Guide - Page 742

MPLS QoS Commands Chapter 42 Configuring PFC3BXL or PFC3B Mode MPLS QoS Feature Default Value IP precedence to DSCP map (DSCP set from IP precedence values) IP precedence 0 = DSCP 0 IP precedence 1 = DSCP 8 IP precedence 2 = DSCP 16 IP precedence 3 = DSCP 24 IP precedence 4 = DSCP 32 IP precedence 5 = DSCP 40 IP precedence 6 = DSCP 48 IP precedence 7 = DSCP 56 DSCP to EXP map (EXP set from DSCP values) DSCP 0-7 = EXP 0 DSCP 8-15 = EXP 1 DSCP 16-23 = EXP 2 DSCP 24-31 = EXP 3 DSCP 32-39 = EXP 4 DSCP 40-47 = EXP 5 DSCP 48-55 = EXP 6 DSCP 56-63 = EXP 7 Marked-down DSCP from DSCP map Marked-down DSCP value equals original DSCP value (no mark down) EXP mutation map No mutation map by default Policers None Policy maps None MPLS flow mask in NetFlow table Label + EXP value MPLS core QoS There are four possibilities at the MPLS core QoS: • Swapping-Incoming EXP field is copied to outgoing EXP field. • Swapping + imposition-Incoming EXP field is copied to both the swapped EXP field and the imposed EXP field. Note If there is a service policy with a set for EXP field, its EXP field will be placed into the imposed label and also into the swapped label. MPLS to IP edge QoS • Disposition of topmost label-Exposed EXP field is preserved. • Disposition of only label-Exposed IP DSCP is preserved. Preserve the exposed IP DSCP MPLS QoS Commands PFC3BXL or PFC3B MPLS QoS on the Cisco 7600 series routers supports the following MPLS QoS commands: • match mpls experimental topmost • set mpls experimental imposition 42-16 Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX OL-4266-08