Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 1 Traffic Policing and Shaping Configuration
Commands
3Com Corporation
1-4
Example
# Configure traffic policing for outbound packets that conform to CARL rule 1 at the
interface Ethernet6/0/0. The normal traffic is 38400 bps. The burst size, twice of the
normal traffic, is allowed at the first time; then packets are normally transmitted when
the rate is less than or equal to 38400 bps. When the rate is larger than 38400 bps,
packets will be transmitted after their precedence is changed to 0.
[3Com -Ethernet6/0/0] qos car outbound any carl 1 cir 38400 cbs 76800 ebs 0
green pass red remark-prec-pass 0
1.1.4 qos carl
Syntax
qos carl carl-index { precedence precedence-value | mac mac-address }
undo qos carl carl-index
View
System view
Parameter
carl: Committed access rate list.
carl-index: CAR list number, in the range 1 to 199.
precedence-value: Precedence, in the range 0 to 7.
mac-address: Hexadecimal MAC address. In the car inbound direction, it is a source
MAC address; in the car outbound direction, it is a destination MAC address.
Description
Use the qos carl command to establish or modify a CARL.
Use the undo qos carl command to delete a CARL.
You can establish a CARL based on IP precedence, dscp or MAC address.
For different carl-index, the repeat execution of this command will create multiple
CARLs, and for the same carl-index, such undertaking will modify the parameters of the
CARL.
You can define eight precedence values at most. If the same precedence is specified
for several times, the system by default regards that only one precedence value has
been specified. The precedence values are related to one another in the way of “OR”.
Example
# Configure CARL 1 with packet precedence 1 and 7.
[3Com ] qos carl 1 precedence 1 7