4000 Router Series ACL and QoS Command Reference

Views

System view

Predefined user roles

network-admin

Parameters

carl-index: Specifies a CAR list by its number in the range of 1 to 199.

dscp dscp-list: Specifies a list of DSCP values. A DSCP value can be a number from 0 to 63 or any of the

following keywords af11, af12, af13, af21, af22, af23, af31, af32, af33, af41, af42, af43, cs1, cs2, cs3,

cs4, cs5, cs6, cs7, default, or ef. You can configure up to eight DSCP values in one command line. If the

same DSCP value is specified multiple times, the system considers the values as one value. If a packet

matches one of the defined DSCP values, it matches the if-match clause.

mac mac-address: Specifies a MAC address in hexadecimal format.

mpls-exp mpls-exp-value: Specifies an MPLS EXP value in the range of 0 to 7. You can configure up to

eight MPLS EXP values in one command line. If the same MPLS EXP value is specified multiple times, the

system considers the values as one value. If a packet matches one of the defined MPLS EXP values, it

matches the if-match clause.

precedence precedence: Specifies a precedence value in the range of 0 to 7. You can configure up to

eight IP precedence values in one command line. If the same IP precedence value is specified multiple

times, the system considers the values as one value. If a packet matches one of the defined IP precedence

values, it matches the if-match clause.

destination-ip-address: Configures a destination IP address-based CAR list.

source-ip-address: Configures a source IP address-based CAR list.

range start-ip-address to end-ip-address: Specifies an IP address range by the start address and end

address. end-ip-address must be greater than start-ip-address. An IP address range can contain a

maximum of 1024 IP addresses.

subnet ip-address mask-length: Specifies a subnet by the IP subnet address and IP subnet address mask

length. The value range for mask-length is 22 to 31.

per-address: Performs per-IP address rate limiting within the network segment. When this keyword is

specified, the CIR is dedicated bandwidth for each IP address and is not shared by any other IP address.

If this keyword is not specified, rate limiting is perf

ormed for the entire network segment, and all of the

CIR is allocated among all the IP addresses in proportion to the traffic load of each IP address.

shared-bandwidth: Specifies that traffic of all IP addresses within the network segment shares the

remaining bandwidth. When this keyword is specified, all of the CIR is allocated evenly among all the

IP addresses based on the number of IP addresses with traffic load.

Usage guidelines

You can create a CAR list based on IP precedence, MAC address, MPLS EXP, DSCP, or IP network

segment.

Using the command repeatedly with different CAR list numbers creates multiple CAR lists. Using the

command repeatedly with the same carl-index modifies the parameters for the CAR list.

To perform rate limiting for a single IP address, use the qos car acl command in interface view.