[c-nsp] CBWFQ/PQ Support on 6500/SUP720-3BXL
Zahid Hassan
zhassan at gmx.net
Wed Jun 11 10:32:43 EDT 2008
Thanks David.
One clarification about your earlier email.
I am thinking of deploying this on my core facing interfaces.
Basically on the interfaces where I have LDP/TDP enabled.
So my question now is, will these interfaces be able to
understand or see any DSCP markings in MPLS packets ?
Will a match on DSCP markings work for MPLS packets
on LDP/TDP enabled interfaces ?
Regards,
Zahid
-------- Original-Nachricht --------
> Datum: Wed, 11 Jun 2008 13:52:07 +0200
> Von: "David Granzer" <dgranzer at gmail.com>
> An: "Zahid Hassan" <zhassan at gmx.net>
> CC: "Todd, Douglas M." <DTODD at partners.org>, cisco-nsp at puck.nether.net
> Betreff: Re: [c-nsp] CBWFQ/PQ Support on 6500/SUP720-3BXL
> On 6/11/08, Zahid Hassan <zhassan at gmx.net> wrote:
> > Thanks Douglas, I am still tyring to the find out if there is a way to
> do this with wrr-queues.
> >
> > The bit that I am not sure about is how to match on EXP bits within
> wrr-queues.
> >
> >
> > Does anyone know if this is at all possible ?
>
> Zahid see what I wrote in preceding email. I think this is what you want.
>
> For MPLS packets the EXP value is mapped into an internal DSCP and you
> can assign into wrr queues according DSCP value.
>
> David
>
> >
> >
> > Regards,
> >
> >
> > Zahid
> >
> >
> >
> >
> > -------- Original-Nachricht --------
> > > Datum: Wed, 11 Jun 2008 05:52:42 -0400
> > > Von: "Todd, Douglas M." <DTODD at PARTNERS.ORG>
> >
> > > An: "Zahid Hassan" <zhassan at gmx.net>
> >
> > > CC: cisco-nsp at puck.nether.net
> > > Betreff: RE: [c-nsp] CBWFQ/PQ Support on 6500/SUP720-3BXL
> >
> >
> > > Zahid:
> > >
> > > We were looking at the same senerio and found that we must use a SIP
> type
> > > card
> > > to do any traffic shaping. The 6500 does not have this type of
> feature.
> > > SIP-200/400 for either DS1/100FD/1G type of connections.
> > >
> > > Hope this helps.
> > >
> > > Douglas
> > >
> > > -----Original Message-----
> > > From: cisco-nsp-bounces at puck.nether.net
> > > [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of David Granzer
> > > Sent: Wednesday, June 11, 2008 5:46 AM
> > > To: Zahid Hassan
> > > Cc: cisco-nsp at puck.nether.net
> > > Subject: Re: [c-nsp] CBWFQ/PQ Support on 6500/SUP720-3BXL
> > >
> > > On 6/11/08, Zahid Hassan <zhassan at gmx.net> wrote:
> > > > Many thanks for this David.
> > > >
> > > > Yes, the "priority" and as well as the "bandwidth" command doesn't
> > > > seems to be supported in either ingress or egress direction.
> > > >
> > > > I am thinking of configuring "wrr-queues" and I don't know if I
> can
> > > > at all match on EXP bits.
> > > >
> > > > Does anyone know how to match on EXP bits within a wrr-queue ?
> > >
> > > For MPLS packets, the EXP value is mapped into an internal DSCP so
> that
> > > the
> > > PFC3BXL or PFC3B can apply non-MPLS QoS marking and policing.
> > >
> > >
> http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/con
> > > figuration/guide/mplsqos.html
> > >
> > > David
> > >
> > > >
> > > >
> > > > Thanks in advance.
> > > >
> > > >
> > > > Zahid
> > > >
> > > > -------- Original-Nachricht --------
> > > > > Datum: Wed, 11 Jun 2008 10:36:32 +0200 > Von: "David Granzer"
> > > > <dgranzer at gmail.com> > An: "Zahid Hassan" <zhassan at gmx.net> > CC:
> > > > "Cisco NSP Puck Nether Net (Cisco NSP)"
> <cisco-nsp at puck.nether.net>,
> > > > zhassan at bis-internet.co.uk > Betreff: Re: [c-nsp] CBWFQ/PQ Support
> on
> > > > 6500/SUP720-3BXL
> > > >
> > > >
> > > > > Hello,
> > > > >
> > > > > n 6/11/08, Zahid Hassan <zhassan at gmx.net> wrote:
> > > > > > Dear All,
> > > > > >
> > > > > >
> > > > > > I have a requirement to implement CBWFQ/LLQ matching > > on
> > > > EXP bits on a 6500 with SUP720-3BXL.
> > > > > >
> > > > > > Since the "priority" command is not supported within a
> > > > policy-map, > > I am wondering if this can be achieved using
> > > "wrr-queues".
> > > > > >
> > > > > > This is the failure message when I apply the service-policy:
> > > > > >
> > > > > > 6500(config-if)#service-policy input CORE-THREE-CLASS > >
> > > > priority command is not supported in input direction > > for this
> > > > interface configuration failed!
> > > > >
> > > > > above you try using priority in ingress direction which is not
> >
> > > > supported generally. Second problem in your case will be that >
> > > > 6500/7600 LAN cards does not support CBWFQ like 7200/7301 etc. You
> >
> > > > must use L2 QoS, see "Quality of Service on Cisco Catalyst 6500"
> > > > >
> > > > >
> > > >
> http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/prod_
> > > > white_paper0900aecd803e5269.html
> > > > >
> > > > > David
> > > > >
> > > > >
> > > > > >
> > > > > > This is for a WS-X6704-10GE linecard with supports 1p7q8t.
> > > > > >
> > > > > > I will be really grateful for input or pointers about this.
> > > > > >
> > > > > > Thanking in you advance.
> > > > > >
> > > > > >
> > > > > > Regards,
> > > > > >
> > > > > >
> > > > > >
> > > > > > Zahid
> > > > > > _______________________________________________
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> > > >
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