the bandwidth command is just for informational purposes. Routing protocols
that rely on link bandwidth for metric calculation ( like OSPF, IGRP,
EIGRP ) use this parameter. It has no effect on the actual throughput on the
WAN link.
-----Original Message-----
From: Frank Wells <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Monday, September 18, 2000 12:58 PM
Subject: Re: what does becn and fecn high value indicate?
>Of course you cannot control the FECN and BECN bits. What you can do
though
>is adjust the manner in which your IP traffic negotiates moving from fast
>links to slower links (LAN to WAN etc). This is where the bandwidth
command
>amongst others can be useful.
>
>For example, routing off a fast ethernet port across the router into one of
>its serial ports requires a slowing of traffic. Serial ports cannot handle
>anywhere near 100mb of traffic. There are a number of ways one can handle
>this; prioritizing, queueing and using the bandwidth parameter are a few
>that spring to mind. Each has its own merits and limitations so further
>investigation is warranted...
>
>
>
>
>>From: "Ejay Hire" <[EMAIL PROTECTED]>
>>To: [EMAIL PROTECTED]
>>Subject: Re: what does becn and fecn high value indicate?
>>Date: Mon, 18 Sep 2000 11:12:20 CDT
>>
>>The fecn & becn bits are set by the frame-relay switch(es) whenever there
>>is congestion in the cloud. Nothing you can do on the router will make
>>them not be set, they are a flow control mechanism.
>>
>>
>>----Original Message Follows----
>>From: "Frank Wells" <[EMAIL PROTECTED]>
>>Reply-To: "Frank Wells" <[EMAIL PROTECTED]>
>>To: [EMAIL PROTECTED]
>>Subject: Re: what does becn and fecn high value indicate?
>>Date: Mon, 18 Sep 2000 08:22:38 PDT
>>
>>Hey Atif,
>>If I recall correctly, doesn't setting the 'bandwidth'command on the WAN
>>link (frame relay in this case) resolve this problem?
>>
>>
>>>From: "Atif Awan" <[EMAIL PROTECTED]>
>>>Reply-To: "Atif Awan" <[EMAIL PROTECTED]>
>>>To: "Yee, Jason" <[EMAIL PROTECTED]>, "cisco@groupstudy. com
>>>\(E-mail\)" <[EMAIL PROTECTED]>
>>>Subject: Re: what does becn and fecn high value indicate?
>>>Date: Mon, 18 Sep 2000 14:48:27 +0500
>>>
>>>
>>>BECN stands for Backward Explicit Congestion Notification. This indicates
>>>that there is congestion in the path opposite to the packets which have
>>>this
>>>BECN bit set. In your case you are getting a lot of packets with this
BECN
>>>bit set and this is not a good sign. There is congestion outwards from
>>>your
>>>router.
>>>
>>>Regards
>>>Atif
>>>
>>>----- Original Message -----
>>>From: "Yee, Jason" <[EMAIL PROTECTED]>
>>>To: "cisco@groupstudy. com (E-mail)" <[EMAIL PROTECTED]>
>>>Sent: Monday, September 18, 2000 12:15 PM
>>>Subject: what does becn and fecn high value indicate?
>>>
>>>
>>> > hi , Anyone
>>> >
>>> > Knows what the BECN and FECN in sh frame-relay pvc indicates :
>>> >
>>> > and a high BECN indicates what?
>>> >
>>> >
>>> > PVC Statistics for interface Hssi4/1 (Frame Relay DTE)
>>> >
>>> > DLCI = 299, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
>>>Hssi4/1.10
>>> >
>>> > input pkts 1263236605 output pkts 1388118986 in bytes
2167041222
>>> > out bytes 3760560232 dropped pkts 1 in FECN pkts 0
>>> > in BECN pkts 791683517 out FECN pkts 0 out BECN pkts 0
>>> > in DE pkts 29527 out DE pkts 0
>>> > out bcast pkts 16346 out bcast bytes 5868214
>>> > pvc create time 11w6d, last time pvc status changed 05:27:23
>>> >
>>> >
>>> > thanks
>>> >
>>> > Jason
>>> >
>>> >
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>>
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