From: "Hoonpongsimanont
Date: Wed Nov 10 2004 - 10:50:19 GMT-3
Nothing has changed. I tried fragment 1500, and 960.
-----Original Message-----
From: Nico van Niekerk [mailto:nico@vanniekerk.co.za]
Sent: Wednesday, November 10, 2004 8:40 PM
To: Hoonpongsimanont, Chalermchai; 'Group Study'
Subject: RE: FR Traffic Shaping Tc
What happens if you put a "frame-relay fragment" under the R3R5 map-class?
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Nico van Niekerk
> Sent: Thursday, 11 November 2004 12:22 AM
> To: Hoonpongsimanont, Chalermchai; 'Group Study'
> Subject: RE: FR Traffic Shaping Tc
>
>
> I don't know why your Byte Limit is 6048, but if you take 6048*8 / 768000
> you get the Bc of 63ms.
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Hoonpongsimanont, Chalermchai
> > Sent: Wednesday, 10 November 2004 6:23 PM
> > To: 'Group Study'
> > Subject: FR Traffic Shaping Tc
> >
> >
> > Hi all,
> >
> > I am confused with Frame Relay Traffic Shaping Tc interval. I
> think router
> > will automatically calculate Tc from configured CIR and Bc by
> >
> > Bc = CIR * Tc
> >
> > This is not working as expected on my router.
> >
> > Rack1R5#show traffic-shape serial0/0.35
> >
> > Interface Se0/0.35
> > Access Target Byte Sustain Excess Interval
> > Increment Adapt
> > VC List Rate Limit bits/int bits/int (ms) (bytes)
> > Active
> > 503 768000 6048 96000 0 63 6048
> > -
> >
> > I configured target rate of 768000, Bc of 96000, therefore I
> > expected to see
> > Tc of 96000/768000 = 1/8 second = 125 ms. But on my router, Tc is 64 ms.
> >
> > It's working fine on another subinterface.
> >
> >
> > Rack1R5#show traffic-shape serial0/0.54
> >
> > Interface Se0/0.54
> > Access Target Byte Sustain Excess Interval
> > Increment Adapt
> > VC List Rate Limit bits/int bits/int (ms) (bytes)
> > Active
> > 504 768000 960 7680 0 10 960 -
> >
> > Could this be a software bug? I'm using 12.2(15)T14.
> > Thanks in advance,
> >
> > Cheers,
> > David
> >
> > Here's configuration.
> >
> > !
> > class-map match-all voice
> > match dscp cs5
> > !
> > !
> > policy-map voice-go-first
> > class voice
> > priority 256
> > class class-default
> > fair-queue
> > policy-map mark-default
> > class class-default
> > set dscp cs1
> > !
> > !
> > interface Serial0/0
> > no ip address
> > encapsulation frame-relay
> > frame-relay traffic-shaping
> > no frame-relay inverse-arp
> > !
> > interface Serial0/0.35 point-to-point
> > ip address 163.1.35.5 255.255.255.0
> > ip router isis
> > isis circuit-type level-2-only
> > frame-relay interface-dlci 503
> > class R3R5
> > !
> > interface Serial0/0.54 point-to-point
> > ip address 163.1.54.5 255.255.255.0
> > ip router isis
> > ip pim dense-mode
> > backup interface BRI0/0
> > isis circuit-type level-2-only
> > frame-relay de-group 1 504
> > frame-relay interface-dlci 504
> > class R4R5
> > !
> > !
> > map-class frame-relay R4R5
> > frame-relay end-to-end keepalive mode request
> > frame-relay cir 768000
> > frame-relay bc 7680
> > frame-relay be 0
> > service-policy output voice-go-first
> > frame-relay fragment 960
> > !
> > map-class frame-relay R3R5
> > frame-relay cir 768000
> > frame-relay bc 96000
> > frame-relay be 0
> > service-policy input mark-default
> >
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