Updated on 15 Feb 2004

Committed Access Rate (CAR)

Committed Access Rate (CAR) lets you limit the bandwidth available for each of traffic type, such as HTTP and FTP.

Example 1 - Control by each protocol
DestinationTraffic TypeBandwidth Limit (Kbps)Normal Brust Size (Kbytes)Maximum Burst Size (KBytes)Precedence of Traffic at Normal Rate (0-4)Action on Excessive Traffic
InternetHTTP888Very High (4)drop
InternetFTP888Very High (4)drop
InternetSMTP888Best Effort (0)drop
rate-limit output access-group 100 8000 8000 8000 conform-action set-prec-continue 4 exceed-action drop
rate-limit output access-group 101 8000 8000 8000 conform-action set-prec-continue 4 exceed-action drop
rate-limit output access-group 102 8000 8000 8000 conform-action set-prec-continue 0 exceed-action drop

access-list 100 permit tcp any any eq www
access-list 101 permit tcp any any range ftp-data ftp
access-list 102 permit tcp any any eq smtp
Example 2 - Control by each traffic type
DestinationTraffic TypeBandwidth Limit (Kbps)Normal Brust Size (Kbytes)Maximum Burst Size (KBytes)Precedence of Traffic at Normal Rate (0-4)Action on Excessive Traffic
InternetIP888Very High (4)drop
InternetTCP888Very High (4)drop
InternetUDP888Very High (4)drop
rate-limit output access-group 100 8000 8000 8000 conform-action set-prec-continue 4 exceed-action drop
rate-limit output access-group 101 8000 8000 8000 conform-action set-prec-continue 4 exceed-action drop
rate-limit output access-group 102 8000 8000 8000 conform-action set-prec-continue 4 exceed-action drop

access-list 100 permit ip any any
access-list 101 permit tcp any any
access-list 102 permit udp any any

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