Cisco QOS

Hi all

Is it possible to configure QOS to prioritise traffic on certai ports using Cisco 800 with Version 12.2(15)T2?


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Judging from my recent experience you will have to try it.

3725 with ADSL WIC will not actually do LLQ. as far as I can see, in my configuration.

I have done this before on an 837 and it worked.


I get occasional messages regarding MLPPP and I have found some docs that say that MLPPP is needed for LLQ. Trouble is the ISP doesn't do it.

class-map match-any CM-voice match dscp ef match dscp cs3 ! ! policy-map PM-tointernet class CM-voice priority 270 class class-default fair-queue queue-limit 10

interface ATM0/0 description ADSL Connection to Internet no ip address no atm ilmi-keepalive dsl operating-mode auto dsl enable-training-log pvc 8/35 tx-ring-limit 16 vc-hold-queue 4 pppoe-client dial-pool-number 1

interface Dialer1 bandwidth 512 ip address negotiated ip access-group 190 in ip nat outside ip virtual-reassembly service-policy output PM-tointernet encapsulation ppp ip route-cache flow dialer pool 1 dialer-group 1

sh policy-map int d1 Dialer1

Service-policy output: PM-tointernet

Class-map: CM-voice (match-any) 36800 packets, 5040688 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: dscp ef 0 packets, 0 bytes 5 minute rate 0 bps Match: dscp cs3 36800 packets, 5040688 bytes 5 minute rate 0 bps Queueing Strict Priority Output Queue: Conversation 136 Bandwidth 270 (kbps) Burst 6750 (Bytes) (pkts matched/bytes matched) 0/0 (total drops/bytes drops) 0/0

Class-map: class-default (match-any) 333367 packets, 85996282 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: any Queueing Flow Based Fair Queueing Maximum Number of Hashed Queues 128 (total queued/total drops/no-buffer drops) 0/0/0

Everything looks lined up but no actual QoS.

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