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Configuring an ADSL WAN Interface Card on Cisco 1700 Series Routers
OL-3317-03
Configuring Quality of Service Parameters
!
interface ATM0/0
dsl operating-mode auto
no ip address
no atm ilmi-keepalive
!
interface ATM0/0.1 point-to-point
description COLLEGAMENTO
mtu 576
ip address 1.0.0.1 255.0.0.0
pvc 99/99
protocol ip 2.0.0.2 broadcast
vbr-nrt 142 142 1
tx-ring-limit 3
oam-pvc 0
oam retry 5 5 1
encapsulation aal5snap
service-policy out ADSL-out
!
dial-peer voice 201 voip
destination-pattern 3640200
session target ipv4:14.0.0.3
playout-delay maximum 300
ip qos dscp cs4 media
ip qos dscp cs4 signaling
Committed Access Rate
Committed access rate (CAR) allows you to limit bandwidth transmission rates to traffic sources and
destinations and allows you to specify policies for handling traffic that both conforms to and breaches
the specified bandwidth allocations.
CEF mode is required for CAR support. To enable CEF, enter the ip cef command.
To enable CAR, enter the rate-limit command under the atm interface.
Configuration Example
The following example shows a Cisco 1751 router configured with CAR:
ip cef
interface ATM0/0.1 point-to-point
dsl operating-mode auto
mtu 576
ip address 10.0.0.10 255.255.255.0
rate-limit output 368000 2000 2000 conform-action set-dscp-transmit 40 exceed-action
set-dscp-transmit 48
pvc 0/33
protocol ip 10.0.0.9 broadcast
vbr-rt 160 160 1
encapsulation aal5snap
!
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