From: Niche (jackyliu419@gmail.com)
Date: Fri Sep 09 2005 - 04:16:38 GMT-3
Hi,
No need to create mutation map cause mutation map is only for change
old-dscp-value to new-dscp-value, as far as I know.
Just create cos-to-dscp mapping is enough.
Sorry I don't have enough equipment in testing room so I can't fully verify
what I have said.
Cheers~
Jacky
On 9/9/05, toonsh dosh <toonsh@hotmail.com> wrote:
>
> Hi,
>
> So if I understand correctly what you are saying is because this is a L2
> port it only supports L2 marking(Cos0 . Thus setting the ingress COS value
> and creating a mutation map for the layer 3 DSCP would be the way to go ?
>
> Thanks
>
>
> >From: Niche <jackyliu419@gmail.com>
> >To: toonsh dosh <toonsh@hotmail.com>
> >CC: ccielab@groupstudy.com
> >Subject: Re: Setting ingress DSCP value on 3550 L2 port
> >Date: Fri, 9 Sep 2005 08:48:41 +0800
> >
> >Hi,
> >
> >As far as I can remember, dscp is layer 3 marking, so if you want to do
> >what
> >you want and the you don't have any cos marking in the packet in advance
> >before it enter into the cat3550. You should create a cos-dscp mapping in
> >global configuration, then set the default cos of the incoming traffic to
> >that related dscp value.
> >
> >Then apply the service policy on the outgoing interface and use
> access-list
> >to check again at the remote end.
> >
> >Again, just my thinking, please correct me if I have anything wrong =)
> >
> >Jacky
> >
> >On 9/8/05, toonsh dosh <toonsh@hotmail.com> wrote:
> > >
> > > Hi,
> > >
> > > I have just run some tests trying to set ingress traffic on a 3550 L2
> >port
> > > to a DSCP value of 45.
> > >
> > > mls qos
> > > !
> > > class-map match-all ICMP
> > > match access-group 101
> > > !
> > > !
> > > policy-map TEST
> > > class ICMP
> > > set dscp 45
> > > !
> > > access-list 101 permit icmp any any
> > > !
> > > int f0/1
> > > service-policy input TEST
> > >
> > > If I run a trace on the receiving end I see the DSCP value has
> remained
> > > unchanged. Am I missing something ? What are some other ways of
> setting
> > > ingress traffic PREC or DSCP values.
> > >
> > > Thanks
> > >
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