Re: Tc default value in GTS

Hi Swap,

  Thats great info for me and really appreciated.

Thank You very much

Regards
Anantha Subramanian Natarajan

On Tue, Sep 1, 2009 at 5:36 PM, Swap <ccie19804_at_gmail.com> wrote:

> For CIR less than 320kbps, default Bc is 8000bits and Tc is calculated
> based
> on the Bc/CIR ratio.
> For CIR greater than 320Kbps, default Bc is calculated based on a default
> Tc
> value of 0.125sec =1/8th Sec. These are Cisco defaults.
>
> Swap
> #19804
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Anantha Subramanian Natarajan
> Sent: Monday, August 31, 2009 5:16 PM
> To: Mark Matters; Cisco certification
> Subject: Re: Tc default value in GTS
>
> Hi Mark,
>
> Sure ,I learned that,in GTS,by default Tc is a variable and able
> to conclude from Bryan,Divin that it does varies in proportion to Bc and
> CIR.
>
> Thanks
>
> Regards
> Anantha Subramanian Natarajan
>
> On Mon, Aug 31, 2009 at 7:56 AM, Mark Matters <markccie_at_gmail.com> wrote:
>
> > Anantha,
> > Share what you learned.
> >
> >
> > On Sun, Aug 30, 2009 at 5:45 PM, Anantha Subramanian Natarajan <
> > anantha.natarajan_at_gravitant.com> wrote:
> >
> >> Thanks Bryan ....Actually I to derived this understanding from DQOS
> >> book..Thank you once again
> >>
> >> Regards
> >> Anantha Subramanian Natarajan
> >>
> >> On Sun, Aug 30, 2009 at 4:42 PM, Bryan Bartik <bbartik_at_ipexpert.com>
> >> wrote:
> >>
> >> > Good question. The only other information I have is from the QoS Exam
> >> > Guide, p355:
> >> >
> >> > "The Tc value defaults to 125 ms, but interestingly, GTS can use
> >> different
> >> > default Tc values, based on the configuration settings you use."
> >> >
> >> > Perhaps someone else can shed some light on the reason...
> >> >
> >> >
> >> > On Sun, Aug 30, 2009 at 3:34 PM, Anantha Subramanian Natarajan <
> >> > anantha.natarajan_at_gravitant.com> wrote:
> >> >
> >> >> Hi Bryan,
> >> >>
> >> >> Thank you very much and whats the logic behind the Tc varying....to
> >> what
> >> >> parameters it varies to .
> >> >>
> >> >> Thanks
> >> >>
> >> >> Regards
> >> >> Anantha Subramanian Natarajan
> >> >>
> >> >> On Sun, Aug 30, 2009 at 4:11 PM, Bryan Bartik <
> bbartik_at_ipexpert.com
> >> >wrote:
> >> >>
> >> >>> It appears to be variable:
> >> >>>
> >> >>> R1(config-if)#int s1/1
> >> >>> R1(config-if)#traffic-shape rate 56000
> >> >>> R1(config-if)#do sho traf
> >> >>>
> >> >>> Interface Se1/1
> >> >>> Access Target Byte Sustain Excess Interval
> Increment
> >> >>> Adapt
> >> >>> VC List Rate Limit bits/int bits/int (ms) (bytes)
> >> >>> Active
> >> >>> - 56000 1988 7952 7952 142 994
> >> -
> >> >>>
> >> >>> R1(config-if)#traffic-shape rate 64000
> >> >>> R1(config-if)#do sho traf
> >> >>>
> >> >>> Interface Se1/1
> >> >>> Access Target Byte Sustain Excess Interval
> Increment
> >> >>> Adapt
> >> >>> VC List Rate Limit bits/int bits/int (ms) (bytes)
> >> >>> Active
> >> >>> - 64000 2000 8000 8000 125 1000
> >> -
> >> >>>
> >> >>> R1(config-if)#traffic-shape rate 96000
> >> >>> R1(config-if)#do sho traf
> >> >>>
> >> >>> Interface Se1/1
> >> >>> Access Target Byte Sustain Excess Interval
> Increment
> >> >>> Adapt
> >> >>> VC List Rate Limit bits/int bits/int (ms) (bytes)
> >> >>> Active
> >> >>> - 96000 1992 7968 7968 83 996
> >> -
> >> >>>
> >> >>> R1(config-if)#traffic-shape rate 512000
> >> >>> R1(config-if)#do sho traf
> >> >>>
> >> >>> Interface Se1/1
> >> >>> Access Target Byte Sustain Excess Interval
> Increment
> >> >>> Adapt
> >> >>> VC List Rate Limit bits/int bits/int (ms) (bytes)
> >> >>> Active
> >> >>> - 512000 3200 12800 12800 25 1600
> >> -
> >> >>> R1(config-if)#
> >> >>>
> >> >>> -hth
> >> >>>
> >> >>> On Sun, Aug 30, 2009 at 12:06 PM, Anantha Subramanian Natarajan <
> >> >>> anantha.natarajan_at_gravitant.com> wrote:
> >> >>>
> >> >>> > Hi All,
> >> >>> >
> >> >>> > When I was going through the Generic Traffic Shaping (GTS) ,I am
> >> >>> seeing 2
> >> >>> > different things,in one place I am seeing the default Tc value is
> >> 125ms
> >> >>> > while summarizing the difference between different shaping
> methods,I
> >> am
> >> >>> > seeing the default Tc value as "Variable" for GTS.Kindly provide
> me
> >> an
> >> >>> > insight on the same.
> >> >>> >
> >> >>> > Thanks for the help
> >> >>> >
> >> >>> > Regards
> >> >>> > Anantha Subramanian Natarajan
> >> >>> >
> >> >>> >
> >> >>> > Blogs and organic groups at http://www.ccie.net
> >> >>> >
> >> >>> >
> >> _______________________________________________________________________
> >> >>> > Subscription information may be found at:
> >> >>> > http://www.groupstudy.com/list/CCIELab.html
> >> >>> >
> >> >>> >
> >> >>> >
> >> >>> >
> >> >>> >
> >> >>> >
> >> >>> >
> >> >>> >
> >> >>>
> >> >>>
> >> >>> --
> >> >>> Bryan Bartik
> >> >>> CCIE #23707 (R&S), CCNP
> >> >>> Sr. Support Engineer - IPexpert, Inc.
> >> >>> URL: http://www.IPexpert.com <http://www.ipexpert.com/> <
> http://www.ipexpert.com/> <
> >> http://www.ipexpert.com/>
> >> >>>
> >> >>>
> >> >>> Blogs and organic groups at http://www.ccie.net
> >> >>>
> >> >>>
> >> _______________________________________________________________________
> >> >>> Subscription information may be found at:
> >> >>> http://www.groupstudy.com/list/CCIELab.html
> >> >>>
> >> >>>
> >> >>>
> >> >>>
> >> >>>
> >> >>>
> >> >>>
> >> >>>
> >> >>
> >> >
> >> >
> >> > --
> >> > Bryan Bartik
> >> > CCIE #23707 (R&S), CCNP
> >> > Sr. Support Engineer - IPexpert, Inc.
> >> > URL: http://www.IPexpert.com <http://www.ipexpert.com/> <
> http://www.ipexpert.com/> <
> >> http://www.ipexpert.com/>
> >>
> >>
> >> Blogs and organic groups at http://www.ccie.net
> >>
> >> _______________________________________________________________________
> >> Subscription information may be found at:
> >> http://www.groupstudy.com/list/CCIELab.html
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> > --
> >
> >
> > -
> > "The more I learn the less I know". This is incredibly frustrating to me.
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
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Received on Tue Sep 01 2009 - 17:58:54 ART