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ADSL QoS on 7200 LNS

Are there any issues running QoS on a Cisco 7200 LNS? I have a whole bunch of ADSL connections terminating on the LNS, can QoS be applied? I heard that this can't be done without enabling multilink? I'm trying to avoid that if possible due to IOS bugs.


Re: ADSL QoS on 7200 LNS

I think it is not possible to run QOS when it has bunch of ADSL connection without Multilink.

If possible enable Auto QOS or the following is the example of Manual QOS.

interface Multilink1

ip address

ip tcp header-compression iphc-format

load-interval 30

service-policy output QoS-Policy

ppp multilink

ppp multilink fragment-delay 10

ppp multilink interleave

multilink-group 1

ip rtp header-compression iphc-format


interface Serial0

bandwidth 256

no ip address

encapsulation ppp

no ip mroute-cache

load-interval 30

no fair-queue

ppp multilink

multilink-group 1

class-map VoIP-RTP

match access-group 100


class-map VoIP-Control

match access-group 101


policy-map QoS-Policy

class VoIP-RTP

priority 100


class VoIP-Control

bandwidth 8


class class-default


access-list 100 permit ip any any precedence 5

access-list 100 permit ip any any dscp ef

access-list 101 permit tcp any host range 2000 2002

access-list 101 permit udp any host 2427

access-list 101 permit tcp any host 2428


access-list 101 permit tcp any host 1720

access-list 101 permit tcp any host range 11000 11999