[cisco-voip] TOS marking of SCCP on CM 3.3 to CS3

[Ted Nugent]

Well at least I'm not smoking crack! Any other ideas?


Internet Protocol, Src: 192.168.8.50 (192.168.8.50),
Dst: 10.83.136.111 (10.83.136.111)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x68 (DSCP 0x1a:
Assured Forwarding 31; ECN: 0x00)
        0110 10.. = Differentiated Services Codepoint:
Assured Forwarding 31 (0x1a)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 40
    Identification: 0x7e35 (32309)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: TCP (0x06)
    Header checksum: 0xa096 [correct]
        Good: True
        Bad : False
    Source: 192.168.8.50 (192.168.8.50)
    Destination: 10.83.136.111 (10.83.136.111)



--- jake rybak <jrybak at annese.com> wrote:

> I also been caught not changing mgcp signaling and
> seeing the wrong 
> traffic hit a policy.map at af31 thinking it was
> sccp.
> 
> Ted Nugent wrote:
> > 3.3(4) doesn't list the DSCP on the phone like
> 3.3(5)+
> > but I'm definitely seeing the class-map increment
> AF31
> > when I hit any keys while a call is active... 
> > I guess I'll need to pull some sniffer traces to
> > confirm this since all config appears to be
> correct.
> > Probably need to reload the switch just confirm
> it's
> > reading QOS correctly.
> > I was thinking it might be a bug and I guess a
> sniffer
> > will confirm it. I welcome any other input and
> I'll
> > post back what the capture shows me.
> >
> >
> > --- jake rybak <jrybak at annese.com> wrote:
> >
> >   
> >> I had the same problem or at least I thought. The
> >> phone would say 
> >> AF31(bug) but the packet captures said cs3. I
> would
> >> see them match a 
> >> class-map at af31 on my wan router until I
> changed
> >> the cos-dscp mapping.
> >>
> >> It was a while ago so I do not recall the exact
> >> scenario.
> >>
> >> Ted Nugent wrote:
> >>     
> >>> Thats exactly what I thought too at first... so
> I
> >>>       
> >> set
> >>     
> >>> the port to trust DSCP and just for grins I set
> >>>       
> >> the
> >>     
> >>> COS-DSCP map back to 24.. same dealio..
> >>>
> >>> also the trunk to the gateway is set to trust
> >>>       
> >> DSCP...
> >>     
> >>>
> >>> --- jake rybak <jrybak at annese.com> wrote:
> >>>
> >>>   
> >>>       
> >>>> I would guess it would be your mls qos map
> >>>>         
> >> cos-dscp
> >>     
> >>>> statement on the switch.
> >>>>
> >>>> Ted Nugent wrote:
> >>>>     
> >>>>         
> >>>>> This has been driving me nuts.
> >>>>> I'm running CM3.3(4)SR2 and I've changed the
> TOS
> >>>>>       
> >>>>>           
> >>>> Mask
> >>>>     
> >>>>         
> >>>>> (IP TOS BitMask for Comm. between CCM and
> >>>>>           
> >> Device*)
> >>     
> >>>>>       
> >>>>>           
> >>>> to
> >>>>     
> >>>>         
> >>>>> CS3 (0x60). As the param implies it marks the
> >>>>>       
> >>>>>           
> >>>> traffic
> >>>>     
> >>>>         
> >>>>> correctly from CM to my remote site endpoint
> >>>>>       
> >>>>>           
> >>>> however
> >>>>     
> >>>>         
> >>>>> the traffic from the endpoint (IP Phone)
> towards
> >>>>>       
> >>>>>           
> >>>> CM is
> >>>>     
> >>>>         
> >>>>> still at AF31? Short of remarking the control
> >>>>>       
> >>>>>           
> >>>> traffic
> >>>>     
> >>>>         
> >>>>> at the switch or upgrading to 4.1 can anyone
> let
> >>>>>       
> >>>>>           
> >>>> me
> >>>>     
> >>>>         
> >>>>> know how this could be accomplished?
> >>>>> Thanks Ted
> >>>>>
> >>>>>
> >>>>>
> >>>>>           
> >>
> __________________________________________________
> >>     
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> >>>>>           
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> >>>>     
> >>>>         
> >>>>> http://mail.yahoo.com 
> >>>>>
> _______________________________________________
> >>>>> cisco-voip mailing list
> >>>>> cisco-voip at puck.nether.net
> >>>>>
> >>>>>       
> >>>>>           
> >>
> https://puck.nether.net/mailman/listinfo/cisco-voip
> >>     
> >>>>     
> >>>>         
> >>>>>   
> >>>>>       
> >>>>>           
> >>>> _______________________________________________
> >>>> cisco-voip mailing list
> >>>> cisco-voip at puck.nether.net
> >>>>
> >>>>         
> >>
> https://puck.nether.net/mailman/listinfo/cisco-voip
> >>     
> >>>>     
> >>>>         
> >>>
> __________________________________________________
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> >>>       
> >> protection around 
> >>     
> >>> http://mail.yahoo.com 
> >>>
> >>>   
> >>>       
> >>     
> >
> >
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> >
> >   
> 
> 


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