----- Original Message -----
From: "Mike Mandulak"
To: "Tony Medeiros"
Sent: Wednesday, August 08, 2001 6:42 AM
Subject: Re: DE bits [7:15210]
> Sort of... That's the way that I understood it to work. The LMI type is
set
> to Cisco and when I issue the show frame-relay pvc command, the IOS report
> the cir as being set to 0. On of my other Internet connections through a
> different provider (also non-channelized T1) the cir is reported as being
> 768 which is what I would expect.
>
> ----- Original Message -----
> From: "Tony Medeiros"
> To:
> Sent: Wednesday, August 08, 2001 1:14 AM
> Subject: Re: DE bits [7:15210]
>
>
> > A Cisco router will never set the DE bits unless specifically told to do
> so
> > with a frame relay DE list. The frame cloud sets the DE bit on your
> traffic
> > if you exceed the CIR or burst committed data rate for your PVC. This
> means
> > that if the cloud experiences congestion, the frames with the DE bits
are
> > the first into the bit bucket.
> >
> > Theoretically this is the way it's supposed to work. More times than
not
> > the frame cloud will mark your frames DE even if you not exceed you SLA.
> > Then it's time to call the provider.
> >
> > Generally, DE bits have nothing to do with port speed. Port speed is
just
> > the speed of the link you have to the frame switch. Traffic shaping has
> > more effect on the rate you send to each PVC. It's a little
complicated.
> >
> > An easy way to show what the provider is giving you is to set up the
> traffic
> > shaping to correspond to the SLA for the PVC. Then do a "sho frame PVC"
> to
> > see the stats. DE marked frames and BECN's and FECN's, MAY be an
> indicator
> > that you are not getting the SLA you should. These parameters are
> CRITICAL
> > in voice over data applications.
> >
> > Does this help at all ??
> >
> > Tony M.
> > #6172
> >
> > ----- Original Message -----
> > From: "Mike Mandulak"
> > To:
> > Sent: Tuesday, August 07, 2001 9:16 PM
> > Subject: DE bits [7:15210]
> >
> >
> > > Do discard Eligible bits (DE) get set on lines that are full T1's? The
> > > circuit I'm looking at is a full T1 to one of my internet providers
and
> > when
> > > looking at the frame stats (using cisco LMI) I see that that the cir
is
> > set
> > > to zero which would mean that all frames leave my site with the DE bit
> > set.
> > > Am I misunderstanding this?
> > >
> > > MikeM
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=15243&t=15210
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