From: "Hoonpongsimanont
Date: Wed Nov 10 2004 - 10:28:36 GMT-3
I also don't know. :)
But my configuration says nothing about byte limit. Anybody please help.
Thanks.
Cheers,
David
-----Original Message-----
From: Nico van Niekerk [mailto:nico@vanniekerk.co.za]
Sent: Wednesday, November 10, 2004 8:22 PM
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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