[c-nsp] QoS help on Cisco 1841 from Covad

[Nick Voth]

I think I found the cause. No packets were being marked by:

class-map match-all VoIP-Data
 match protocol rtp
 match access-group 101
class-map match-all VoIP-Control
 match protocol sip
 match access-group 101

I removed the "match protocol rtp" and "match protocol sip" and then packets
started to be marked. No clue why it's not recognizing sip or rtp as the
packet protocols, but it's 100% reproducible. If I add those matches back
in, packets stop being recognized...

Thanks,

-Nick


> From: Darryl Dunkin <ddunkin at netos.net>
> Date: Fri, 17 Oct 2008 18:49:27 -0700
> To: Nick Voth <nvoth at estreet.com>, <cisco-nsp at puck.nether.net>
> Conversation: [c-nsp] QoS help on Cisco 1841 from Covad
> Subject: RE: [c-nsp] QoS help on Cisco 1841 from Covad
> 
> What host is xxx.xxx.xxx.xxx? Is that your VOIP gateway?
> 
> You are matching both protocol and the destination IP address
> (match-all). If this is not the destination of your packets, they won't
> match and go to the class-default.
> 
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Nick Voth
> Sent: Friday, October 17, 2008 17:50
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] QoS help on Cisco 1841 from Covad
> 
> Hello folks,
> 
> I'm having some trouble getting my QoS policies for VoIP to work on a
> Covad
> supplied T1 router. It looks like it's a Frame Relay interface. I have
> applied the rules as I normally do on our Point-to-Point circuits, but I
> don't see the rules catching any traffic. Can someone loan me another
> set of
> eyes to see what I'm doing wrong here?
> 
> I didn't do the config for the Frame Interface. That's from Covad so I
> can't
> really mess with that much. I'm only allowed to implement the QoS
> policies.
> 
> Thanks very much:
> 
> 
> Config snippet ------>
> 
> 
> class-map match-all VoIP-Data
>  match protocol rtp
>  match access-group 101
> class-map match-all VoIP-Control
>  match protocol sip
>  match access-group 101
> !
> !
> policy-map QoS-OUT
>  class VoIP-Control
>   bandwidth 60
>  class VoIP-Data
>   priority percent 90
>  class class-default
>   fair-queue 2048
> !
> !
> interface Serial0/0/0
>  bandwidth 1536
>  no ip address
>  encapsulation frame-relay IETF
>  no ip mroute-cache
>  service-module t1 timeslots 1-24
>  service-module t1 fdl both
>  frame-relay lmi-type ansi
>  max-reserved-bandwidth 95
>  service-policy output QoS-OUT
> !
> interface Serial0/0/0.1 point-to-point
>  frame-relay interface-dlci 16 ppp Virtual-Template1
> !
> interface Virtual-Template1
>  ip address negotiated
>  ppp chap hostname 5411955 at bz8
>  ppp chap password 7 14xxxxxxxxxxx
>  ppp ipcp dns request
>  ppp ipcp route default
>  ppp ipcp address accept
> !
> !
> !
> access-list 101 permit ip any host xxx.xxx.xxx.xxx
> 
> 
> 
> Output of "show policy-map"------->
> 
> Router#show policy-map interface Serial0/0/0
> 
>  Serial0/0/0 
> 
>   Service-policy output: QoS-OUT
> 
>     Class-map: VoIP-Control (match-all)
>       0 packets, 0 bytes
>       5 minute offered rate 0 bps, drop rate 0 bps
>       Match: protocol sip
>       Queueing
>         Output Queue: Conversation 2057
>         Bandwidth 60 (kbps)Max Threshold 64 (packets)
>         (pkts matched/bytes matched) 0/0
>         (depth/total drops/no-buffer drops) 0/0/0
> 
>     Class-map: VoIP-Data (match-all)
>       0 packets, 0 bytes
>       5 minute offered rate 0 bps, drop rate 0 bps
>       Match: protocol rtp
>       Queueing
>         Strict Priority
>         Output Queue: Conversation 2056
>         Bandwidth 90 (%)
>         Bandwidth 1382 (kbps) Burst 34550 (Bytes)
>         (pkts matched/bytes matched) 0/0
>         (total drops/bytes drops) 0/0
> 
>     Class-map: class-default (match-any)
>       838 packets, 182315 bytes
>       5 minute offered rate 0 bps, drop rate 0 bps
>       Match: any 
>       Queueing
>         Flow Based Fair Queueing
>         Maximum Number of Hashed Queues 2048
>         (total queued/total drops/no-buffer drops) 0/0/0
> 
> Thanks very much!
> 
> -Nick Voth
> 
> 
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