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R3166-R3206-HP High-End Firewalls Network Management Command Reference-6PW101

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Table Of Contents
188
Description
Use the qos carl command to create or modify a CAR list.
Use the undo qos-carl command to delete a CAR list.
NOTE:
W
hen you apply an IP network se
g
men
t
-based CAR list to an interface with the qos car command, the CIR
you defined takes different meanings depending on the configuration of the per-address keyword and the
shared-bandwidth keyword for the CAR list.
• If the per-address keyword is not specified, the CIR specifies the total bandwidth for the network
segment and will be allocated to each IP address based on its traffic size.
• If the per-address keyword is specified but the shared-bandwidth keyword is not specified, the CIR
specifies the bandwidth of each IP address, and the bandwidth cannot be shared by the other IP
addresses within the network segment.
• If both the per-address keyword and the shared-bandwidth keyword are specified, the CIR specifies the
total shared bandwidth for the network segment, and will be dynamically and evenly allocated to the
traffic by IP address.
For example, apply a CAR list to an interface with 10 Mbps of total bandwidth to perform per-address
rate limiting for the network segment 192.168.0.1 to 192.168.0.100. If the shared-bandwidth keyword
is specified for the CAR list, you can set the CIR to 10 Mbps at maximum; if the shared-bandwidth
keyword is specified for the CAR list, you can set the CIR to 100 kbps at maximum.
Examples
# Apply CAR list 1 to the outbound direction of GigabitEthernet0/1. CAR list 1 limits the rate of each PC
on the subnet 1.1.1.0/24 to 100 kbps, and traffic of IP addresses in the subnet does not share the
remaining bandwidth.
<Sysname> system-view
[Sysname] qos carl 1 source-ip-address subnet 1.1.1.0 24 per-address
[Sysname] interface GigabitEthernet 0/1
[Sysname-GigabitEthernet0/1] qos car outbound carl 1 cir 100 cbs 6250 ebs 0 green pass
red discard
# Apply CAR list 1 to the outbound direction of GigabitEthernet0/1. CAR list 2 limits the rate of each PC
on the network segment 1.1.2.100 through 1.1.2.199 to 5 Mbps, and traffic of IP addresses in the subnet
share the remaining bandwidth.
<Sysname> system-view
[Sysname] qos carl 2 source-ip-address range 1.1.2.100 to 1.1.2.199 per-address
shared-bandwidth
[Sysname] interface GigabitEthernet 0/1
[Sysname-GigabitEthernet0/1] qos car outbound carl 2 cir 5000 cbs 3125 ebs 31250 green
pass red discard