[c-nsp] full utilization on a T1 causing CRC/frame errors?

Chris Adams cmadams at hiwaay.net
Mon Aug 28 15:26:01 EDT 2006


Once upon a time, Burton Windle <bwindle at fint.org> said:
> Maybe I'm just showing my inexperience, but I have an ILEC telling me 
> (verbally; they refused to put it in writing, suggesting that I google it 
> instead) that fulling utilizating a T1 frame relay circuit will cause CRC, 
> frame, and 'abort' input errors on my serial int's input counters.

On a Cisco, if packets are unable to be routed out of the router due to
congestion (e.g. come in a 10meg interface and are supposed to leave a
1.5meg interface), I've seen them counted as input errors (and ignored
errors) on the interface they came in on.

That's the only time I've seen "load" related errors on an interface.

A T1 is a synchronous circuit; it is _always_ sending 1.5 megabits per
second.
-- 
Chris Adams <cmadams at hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.


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