Cisco 7604 User Manual

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Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 42 Configuring PFC3BXL or PFC3B Mode MPLS QoS
PFC3BXL or PFC3B Mode MPLS QoS Restrictions and Guidelines
• police
• mls qos map exp-dscp
• mls qos map dscp-exp
• mls qos map exp-mutation
• mls qos exp-mutation
• show mls qos mpls
• no mls qos mpls trust exp
Note For information about supported non-MPLS QoS commands, see “Configuring PFC QoS” section on
page 41-56.
The following commands are not supported:
• set qos-group
• set discard-class
PFC3BXL or PFC3B Mode MPLS QoS Restrictions and Guidelines
When configuring PFC3BXL or PFC3B mode MPLS QoS, follow these guidelines and restrictions:
• For IP-to-MPLS or EoMPLS imposition when the received packet is an IP packet:
– When QoS is disabled, the EXP value is based on the received IP ToS.
– When QoS is queuing only, the EXP value is based on the received IP ToS.
• For EoMPLS imposition when the received packet is a non-IP packet:
– When QoS is disabled, the EXP value is based on the ingress CoS.
– When QoS is queuing only, the EXP value is based on the received IP ToS.
• For MPLS-to-MPLS operations:
– Swapping when QoS is disabled, the EXP value is based on the original EXP value (in the
absence of EXP mutation).
– Swapping when QoS is queuing only, the EXP value is based on the original EXP value (in the
absence of EXP mutation).
– Imposing additional label when QoS is disabled, the EXP value is based on the original EXP
value (in the absence of EXP mutation).
– Imposing an additional label when QoS is queuing only, the EXP value is based on the original
EXP value (in the absence of EXP mutation).
– Popping one label when QoS is disabled, the EXP value is based on the underlying EXP value.
– Popping one label when QoS is queuing only, the EXP value is based on the underlying EXP
value.
• EXP value is irrelevant to MPLS-to-IP disposition.

Cisco 7604 Specifications

General

Brand	Cisco
Model	7604
Category	Network Router
Language	English