---------------------- Forwarded by Jenny Mcleod/NSO/CSDA on 03/08/2000 16:42
---------------------------
Jay Hennigan <[EMAIL PROTECTED]> on 03/08/2000 13:54:43
Please respond to Jay Hennigan <[EMAIL PROTECTED]>
To: "Sim, CT (Chee Tong)" <[EMAIL PROTECTED]>
cc: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]> (bcc: JENNY
MCLEOD/NSO/CSDA)
Subject: Re: what is mean by EIR on the frame relay???
On Thu, 3 Aug 2000, Sim, CT (Chee Tong) wrote:
> However, I would like to ask you
>
> 1)what is mean by EIR on the Frame relay? Can any one tell me?
JH: Might you mean CIR? Committed information rate?
>
JMcL: It might be a regional term. Around here, EIR (Excess Information Rate)
refers to the amount of bandwidth available 'above' the CIR. So if you have an
access speed of 256K at one end of a PVC and 512K at the other end, and a CIR of
64K between them, then your EIR for the PVC will be 192K (the difference between
the smallest access speed and the CIR).
You can send up to the CIR without getting any traffic marked Discard Eligible
(DE). You can then send up to the EIR in addition to that, but that traffic
will be marked DE - i.e. it will be dropped first if there is congestion in the
network.
--
JMcL
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