Cisco 7609-S Software Configuration Guide - Page 682

Configuring PFC QoS Chapter 41 Configuring PFC QoS • (Not supported with the flow keyword.) The valid range of values for the pir bits_per_second parameter is as follows: - Minimum-32 kilobits per second, entered as 32000 (the value cannot be smaller than the CIR bits_per_second parameters) - Maximum with Release 12.2(18)SXE and later releases: 10 gigabits per second, entered as 10000000000 - Maximum with releases earlier than Release 12.2(18)SXE: 4 gigabits per second, entered as 4000000000 • (Optional) You can specify a conform action for matched in-profile traffic as follows: - The default conform action is transmit, which sets the policy map class trust state to trust DSCP unless the policy map class contains a trust command. - To set PFC QoS labels in untrusted traffic, you can enter the set-dscp-transmit keyword to mark matched untrusted traffic with a new DSCP value or enter the set-prec-transmit keyword to mark matched untrusted traffic with a new IP precedence value. The set-dscp-transmit and set-prec-transmit keywords are only supported for IP traffic. PFC QoS sets egress ToS and CoS from the configured value. - You can enter the drop keyword to drop all matched traffic. - Ensure that aggregate and microflow policers that are applied to the same traffic each specify the same conform-action behavior. • (Optional) For traffic that exceeds the CIR, you can specify an exceed action as follows: - For marking without policing, you can enter the transmit keyword to transmit all matched out-of-profile traffic. - The default exceed action is drop, except with a maximum_burst_bytes parameter (drop is not supported with a maximum_burst_bytes parameter). Note When the exceed action is drop, PFC QoS ignores any configured violate action. - You can enter the policed-dscp-transmit keyword to cause all matched out-of-profile traffic to be marked down as specified in the markdown map. Note When you create a policer that does not use the pir keyword and the maximum_burst_bytes parameter is equal to the normal_burst_bytes parameter (which is the case if you do not enter the maximum_burst_bytes parameter), the exceed-action policed-dscp-transmit keywords cause PFC QoS to mark traffic down as defined by the policed-dscp max-burst markdown map. • (Optional-Not supported with the flow keyword) for traffic that exceeds the PIR, you can specify a violate action as follows: - For marking without policing, you can enter the transmit keyword to transmit all matched out-of-profile traffic. - The default violate action is equal to the exceed action. - You can enter the policed-dscp-transmit keyword to cause all matched out-of-profile traffic to be marked down as specified in the markdown map. 41-80 Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX OL-4266-08