Re: EIGRP and ATM CRCs

From: huang gang (bgv@ggv.com.cn)
Date: Tue May 06 2003 - 22:36:19 GMT-3


hi,Sean
   i think it is sufficient to change the corresponding weight of reliability to 1.
metric weights 0 1 0 1 0 1
"You can adjust the default behavior of IP Enhanced IGRP routing and metric computations. For example, this adjustment allows you to tune system behavior to allow for satellite transmission."--cco
i think satellite transmission is very like an atm pvc with a lot of crc errors.

huangg
email: bgv@ggv.com.cn
Tel: 010-62984668-3912
----- Original Message -----
From: "Sean C" <Upp_and_Upp@hotmail.com>
To: "Jung, Jin" <jin.jung@lmco.com>; <ccielab@groupstudy.com>
Cc: "Brian Dennis" <brian@labforge.com>
Sent: Wednesday, May 07, 2003 6:22 AM
Subject: Re: EIGRP and ATM CRCs

> Jung,
>
> Do you have a CCO link that discusses how the reliability metric is based
> off of CRCs? I can't find anything on the website discussing how the
> reliability metric, itself, is computed. I can see the metric being based
> off of up/down status and the line bouncing, but is that metric also
> including CRCs in particular?
>
> Thx, Sean
> ----- Original Message -----
> From: "Jung, Jin" <jin.jung@lmco.com>
> To: "Sean C." <Upp_and_Upp@hotmail.com>; <ccielab@groupstudy.com>
> Sent: Tuesday, May 06, 2003 8:32 AM
> Subject: RE: EIGRP and ATM CRCs
>
>
> > I believe that question looks like metric adjustment question,,
> >
> > You have to think that what in EIGRP metric can "ATM CRC" cause to change
> > its metric.
> >
> > Bandwidth delay reliability load MTU,,
> > ????
> >
> > -- by default only the bandwidth and delay K value can reflect EIGRP
> metric,
> >
> > In this case, you need to enable one of above K value to 1 ,,
> >
> > My guess would be you have to enable reliability for EIGRP...
> >
> >
> > Jin jung...
> >
> > -----Original Message-----
> > From: Joe Chang [mailto:changjoe@earthlink.net]
> > Sent: Monday, May 05, 2003 9:35 PM
> > To: Sean C.; ccielab@groupstudy.com
> > Subject: Re: EIGRP and ATM CRCs
> >
> >
> > Decrease the EIGRP hello interval, and decrease the hold time so that it
> is
> > something closer to the hello interval. For example 10 seconds hello, 20
> > seconds hold time.
> >
> > ----- Original Message -----
> > From: "Sean C." <Upp_and_Upp@hotmail.com>
> > To: <ccielab@groupstudy.com>
> > Sent: Monday, May 05, 2003 8:48 PM
> > Subject: EIGRP and ATM CRCs
> >
> >
> > > Hello all,
> > >
> > > Found this question on the sample exam from IPExperts and I can't
> > > figure
> > out
> > > the answer. Any clues??
> > > http://www.ipexpert.net/products/itemdetail.asp?SKU=ip0001
> > >
> > > "It has seen lots of time that ATM interface generates CRC errors.
> > > Configure EIGRP such upon getting such errors on any particular router
> > will
> > > automatically reflect to EIGRP toplolgy of all routers in EIGRP AS."
> > >
> > > TIA,
> > > Sean
> >
>
>
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