Layer 2 Switching Commands 699– set-dscp-transmit dscp-val: Remark the DSCP in the packet to dscp-val and transmit. (Range 0-63)– set-cos-transmit 802.1p-priority: Remark the 802.1p priority in thepacket to 802.1p-priority and transmit. (Range 0-7)– transmit: Transmit the packet unmodified.Default ConfigurationThere no default configuration for this command.Command ModesPolicy-Class-Map Configuration modeUser GuidelinesAn srTCM meters a traffic stream and colors packets according to threeparameters: Committed Information Rate (CIR), Committed Burst Size(CBS), and Peak Burst Size (PBS). A packet is colored red if it exceeds theCBS and the PBS, yellow if it exceeds the CBS, but not the PBS, and green ifit exceeds neither. An srTCM is useful in situations where only the length ofthe burst, but not the peak rate, determines the service assignment.The CIR is measured in Kbps, the CBS in Kbytes, and the PBS in Kbytes. It isrecommended that the CBS and PBS be configured to be larger than thelargest expected IP packet. A class command in policy-map mode must beissued for an existing class-map before entering this command.Exampleconsole(config-policy-classmap)#police-single-rate 100000000 32 64 conform-action set-cos-transmit 7 exceed-action set-prec-transmit 7 violate-actiondroppolice-two-rateUse the police-two-rate command to implement a two-rate Three ColorMarket (trTCM) per RFC 2698.NOTE: This command is not available on the N1500 Series switches.
