[c-nsp] Can loop, can't send patterns

[Mike]

james edwards wrote:
> I have an ATM T-1 which is experiencing traffic slowdowns even though we are
> nowhere near commit. Even on 5 sec intervals. Router is a 2620. The LEC
> (Qwest) says they loop the NIU and send patterns w/o errors. They can loop
> my CSU but they can't send patterns.
> I can find anything like this in a google search. What does this suggest ?
>
> Thanks,
>
>   

Well for starters, smokeping and mrtg are your friends. You are graphing 
this line, yes? You want to see that yes, mrtg confirms you are not 
maxing anything out, and that smokeping is all green (no packetloss) and 
that your latency is stable. I bet one or more of these variables goes 
out of whack during your problem period, and which one will tell you 
where to look next.

... once upon a time my qwest DS3 would show 1000ms latencies at only 
14mbps used. Much lost sleep and wasted effort later I discover qwest 
had been piping my ds3 thru some mpls that was getting overloaded, while 
still charging me for ds3..... but in your case you're going to need 
those statistics first before you do anything here.

Mike-