If you don't have the information that OSPF uses to calculate it's metrics
set properly, then OSPF may be overutilizing this link when other paths are
available.
With that said, are you getting a lot of CRC errors? CRC errors are not
normal, and may indicate a problem with your CSU/DSU, or the quality of the
local loop.
BECN's and FECN's are indicators that the frame cloud you are connecting to
is experiencing congestion. It could be oversubscribed, or you may be
pushing more traffic that it can handle. If you are staying within your
CIR, then you may want to ask your Frame service provider to reroute your
PVC's. If you are regularly exceeding your CIR, you may want to add more
bandwidth or look into prioritization/filtering.
Lastly, research Traffic shaping on www.cisco.com. On reciept of a FECN,
the sender is supposed to slow down by ~25%, and gradually increase speed
until it finds a balance. By default, this isn't enabled on Cisco routers.
Good Luck
Ejay Hire
[EMAIL PROTECTED]
CCNA,MCSE,A+ Seeking Internetworking Employment
----Original Message Follows----
From: "Stull, Cory" <[EMAIL PROTECTED]>
Reply-To: "Stull, Cory" <[EMAIL PROTECTED]>
To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
Subject: ospf bandwidth question
Date: Thu, 28 Sep 2000 10:24:27 -0500
If I am getting many CRC errors and FECNs and BECNs on the frame-relay
network what would be a cause of that? Could it be that I didn't have the
bandwidth statement set to the CIR of the PVC???
Thanks
Cory R. Stull
MCSE, Bay Router Specialist, CCNA,CCDA
Communications Concepts Unlimited
262-814-7214
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