Me thinks you got it!! DE, amber frames on the switch, are packets
that exceeded the CIR for the particular circuit. If there is no
congestion then your DE packets will most likely get thru which is why
lots of DE's in and of themselves are not that important but in
conjunction with congestion you have issues, they go from DE's to red
(dropped) frames.
Dave
Ole Drews Jensen wrote:
>
> Thanks to both of you for your answer.
>
> So in this scenario:
>
> RouterA----ProviderRouter1----(cloud)----ProviderRouter2----RouterB
>
> My RouterA will send "like crazy" to my FR Provider, and when it hits the
> first router : ProviderRouter1, that router will assign the 0's and 1's to
> the DE bit.
>
> Thanks,
>
> Ole
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Ole Drews Jensen
> Systems Network Manager
> CCNA, MCSE, MCP+I
> RWR Enterprises, Inc.
> [EMAIL PROTECTED]
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> http://www.RouterChief.com
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> NEED A JOB ???
> http://www.oledrews.com/job
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> -----Original Message-----
> From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, September 19, 2001 11:24 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Bandwidth on Frame Relay [7:20389]
>
> At 09:52 AM 9/19/01, Ole Drews Jensen wrote:
> >Until now, my understanding of the bandwidth command on an interface was
> >that it was only used by some of the dynamic routing protocols, but last
> >night I read in my CIT book that you normally set the bandwidth to the CIR
> >when you use Frame Relay.
> >
> >Does that mean that the router actually looks at the bandwidth specified
by
> >you when deciding when to set the DE bit to 0 or 1?
>
> I think the reason to set the bandwidth to the CIR is so that the composite
> metric used by IGRP and EIGRP and the bandwidth-based metric used by OSPF
> are based on reality about capacity on the link rather than a default
> setting.
>
> It has to do with routing protocols and deciding which path to insert into
> the routing table. It doesn't have to do with the router's other main job
> of forwarding packets.
>
> We have had many discussions about when the DE bit gets set and I must
> admit I haven't followed them. But I think the gist of them was that it's
> set by the provider if you go over the DE. The router doesn't normally set
> it. Probably all those bizarre queuing algorithms affect this though. (I
> know there are some cases where the router sets it...) John N. knows all
> about Fido Fido queuing, etc. Plus you can find a lot in the archives.
>
> Priscilla
>
> >Thanks,
> >
> >Ole
> >
> >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > Ole Drews Jensen
> > Systems Network Manager
> > CCNA, MCSE, MCP+I
> > RWR Enterprises, Inc.
> > [EMAIL PROTECTED]
> >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > http://www.RouterChief.com
> >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > NEED A JOB ???
> > http://www.oledrews.com/job
> >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ________________________
>
> Priscilla Oppenheimer
> http://www.priscilla.com
--
David Madland
Sr. Network Engineer
CCIE# 2016
Qwest Communications Int. Inc.
[EMAIL PROTECTED]
612-664-3367
"Emotion should reflect reason not guide it"
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=20445&t=20389
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