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I need help with 831 DMVPN QOS config

I am looking for a QOS method that allows the best voice quality with little delay and, with the exception of EIGRP updates, I don't care about other traffic. In addition, I would like to use the same QOS config for every 831. I don't want to modify it for each cable/DSL uplink speed. Any suggestions?

The reason is we are having voice quality issues using 831's for a pilot project work from home solution. I knew that voice packets destined for the 831 were delayed when someone at the remote site was downloading a large file but otherwise the quality was pretty good.

More recently, the quality is degrading and it's not just a delay anymore. It appears I have a problem with the QOS method. In the past, the local Cisco office has told me what the Cisco recommended QOS method was. Yesterday I was told that our 831 DMVPN/IP Phone SOHO solution had to do shaping. If I do that, then I will have to modify each config for the uplink bandwidth which I don't want to do.

Currently I am using a config derived from a MQOS PDF found on CCO but I'm not sure it's doing the job. Does anyone have a suggestion on how to make it better?

class-map match-any VOICE-CONTROL

match dscp af31

match precedence 3

class-map match-any VOICE

match ip dscp ef

match ip precedence 5


policy-map IPTVPNQOS

class VOICE

priority 64


bandwidth 10

class class-default



interface Ethernet1

service-policy output IPTVPNQOS

Output from one of the remote 831's. It looks like the queuing is working since there are no dropped packets but maybe I'm reading it wrong?

831# sh policy-map interface e1


Service-policy output: IPTVPNQOS

Class-map: VOICE (match-any)

2303960 packets, 370616992 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: ip dscp ef

2303963 packets, 370617158 bytes

5 minute rate 0 bps

Match: ip precedence 5

0 packets, 0 bytes

5 minute rate 0 bps


Strict Priority

Output Queue: Conversation 264

Bandwidth 64 (kbps) Burst 1600 (Bytes)

(pkts matched/bytes matched) 8365/1386290

(total drops/bytes drops) 0/0

Class-map: VOICE-CONTROL (match-any)

87408 packets, 13072818 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: dscp af31

87408 packets, 13072818 bytes

5 minute rate 0 bps

Match: precedence 3

0 packets, 0 bytes

5 minute rate 0 bps


Output Queue: Conversation 265

Bandwidth 10 (kbps) Max Threshold 64 (packets)

(pkts matched/bytes matched) 1634/205710

(depth/total drops/no-buffer drops) 0/0/0

Class-map: class-default (match-any)

1854668 packets, 466305032 bytes

5 minute offered rate 2000 bps, drop rate 0 bps

Match: any


Flow Based Fair Queueing

Maximum Number of Hashed Queues 256

(total queued/total drops/no-buffer drops) 0/0/0


Re: I need help with 831 DMVPN QOS config