[c-nsp] excessive buffer overrun/ignored packets on GEIP+ interface

[Rodney Dunn]

A copule of additional things:

a) How many pps are you switching through the GEIP+?
b) That board does not support flow control so I've seen that
   cause overruns if you have bursty traffic. A 65xx can put
   packets on the wire at GIG rates. The 75xx can't come close
   to handling packets at GIG rates.

Rodney

On Sat, Dec 23, 2006 at 09:48:57AM -0800, Carlos Kamtha wrote:
> Configuration is as follows:
> 
> 
> 7507 w/GEIP+ --------> Cat6509 (MM fibre)
> 
> Sometimes, (not always) I get tons of packet loss on the link. a show interface
> shows a gross amount of 641521 overrun, 16211710 ignored errors. 
> 
> There are no more errors on the interface. 
> 
> I had initially cleaned the fibre and that seemed to help the problem, but recently
> it has resurfaced.  
> 
> I also bumped up the in/out hold queue to the max on the interface, in hopes that would
> help but so far no luck. 
> 
> I have plenty of headroom on the link, so it isnt a BW availability problem. 
> 
> Anyone have any clues as to what's causing this? 
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