From: Chris Lewis (chrlewiscsco@gmail.com)
Date: Fri Jun 23 2006 - 08:38:04 ART
With a default configuration for FRTS, Tc is indeed 125 msec, however, the
higher the CIR configured in the map-class, the lower the Tc that IOS will
pick.
One cannot configure FRTS for an ethernet interface. Burst parameters for
the ethernet interface will depend on what you configure on that interface.
Chris
On 6/23/06, Feras Abunamous (fabunamo) <fabunamo@cisco.com> wrote:
>
> Correct me if I'm wrong: the default Tc is 125 ms on the frame-relay
> shaping policies. Is that default different on Lan interface? or is it
> the same cross all different interfaces?
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Chris Lewis
> Sent: Thursday, June 22, 2006 2:52 PM
> To: Petr Lapukhov
> Cc: Sami; ccielab@groupstudy.com
> Subject: Re: Tc
>
> I see, so that makes sense from an MQC perspective, as shown by the
> output,
> the default is to allow a burst of 200 msec to allow the algorithm to
> reach
> target rate.
>
> Chris
>
>
> On 6/22/06, Petr Lapukhov <petr@internetworkexpert.com> wrote:
> >
> > Chris,
> >
> > I guess Sami actually mentions commited burst size with MQC,
> > which is 200ms*Bitrate by default, AFAIR :)
> >
> > 2006/6/22, Chris Lewis <chrlewiscsco@gmail.com>:
> >
> > > Sami,
> > >
> > > Could you explain what you mean by Tc in relation to applying the
> > > bandwidth
> > > command and how you arrive at the 200ms figure?
> > >
> > > Chris
> > >
> > >
> > > On 6/22/06, Sami < sy1977@gmail.com > wrote:
> > > >
> > > > Group,
> > > >
> > > > What is default Tc for a ethenet interface ? I configured a policy
> and
> > > > used
> > > > 50% bandwidth , by caluclation it looks like default tc is 200 ms
> ? Is
> > > > that
> > > > correct ?
> > > >
> > > > R4#show policy-map interface fastEthernet 0/0
> > > > FastEthernet0/0
> > > >
> > > > Service-policy output: Pri
> > > >
> > > > Class-map: IT (match-all)
> > > > 0 packets, 0 bytes
> > > > 5 minute offered rate 0 bps, drop rate 0 bps
> > > > Match: access-group 81
> > > > Queueing
> > > > Strict Priority
> > > > Output Queue: Conversation 264
> > > > Bandwidth 50 (%)
> > > > * Bandwidth 50000 (kbps) Burst 1250000 (Bytes)
> > > > * (pkts matched/bytes matched) 0/0
> > > > (total drops/bytes drops) 0/0
> > > >
> > > > Class-map: class-default (match-any)
> > > > 15 packets, 1849 bytes
> > > > 5 minute offered rate 0 bps, drop rate 0 bps
> > > > Match: any
> > > >
> > > > Thanks
> > > >
> > > >
> > >
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> >
> > --
> > Petr Lapukhov, CCIE #16379
> > petr@internetworkexpert.com
> >
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