Policing question, 1811

Unanswered Question
Apr 8th, 2008

I am trying to configure the WAN side of an 1811 to 1) provide priority to video, 2) limit the bandwidth used by video, and 3) limit the bandwidth used by all traffic. The output of the 1811 is 100 Mbps, but it soon drops to 2.4 Mbps at a wireless modem, so I want to limit at the router so QoS works correctly. Here is my config so far:

class-map match-all VIDEO_DSCP

match ip dscp af41

class-map match-all INTERNET

match not access-group 121

class-map match-all ALL-TRAFFIC

match any

class-map match-all INTERNET_DSCP

match ip dscp default

class-map match-all VIDEO

match access-group 121



policy-map ingress_mark_policer

class VIDEO

set dscp af41


set dscp default

policy-map egress_policer


priority 960

policy-map egress_policer_parent


priority 960

police 960000


shape average 2400000




bridge irb




interface FastEthernet0

description $ES_WAN$$FW_OUTSIDE$

ip address

no ip redirects

no ip unreachables

no ip proxy-arp

ip nat outside

ip virtual-reassembly

ip route-cache flow

duplex auto

speed auto

service-policy output egress_policer_parent


I am testing with data and video simultaneously. Video limits to 960K, data traffic limits to 2.4M, but when together they run to a combined 3.4 Mbps so my overall traffic shaping is not working. How do I combine the two requirements so data can use the video bandwidth when available but backs down when video is running? Thanks for any help.


I have this problem too.
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Joseph W. Doherty Tue, 04/08/2008 - 15:15

(pseudo config)

service-policy parentshaper

class class-default

shape average 2.4 Mbps

policy childQoS

service-policy childQoS


priority 960 Kbps

interface FastEthernet0

service-policy output parentshaper


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