[c-nsp] ATM packet loss

[Randy McAnally]

Do you have QOS enabled (mls qos)?

--
Randy

---------- Original Message -----------
From: Mikael Abrahamsson <swmike at swm.pp.se>
To: James Berwick <jim at jamesberwick.com>
Cc: cisco-nsp at puck.nether.net
Sent: Wed, 2 Sep 2009 21:01:15 +0200 (CEST)
Subject: Re: [c-nsp] ATM packet loss

> On Wed, 2 Sep 2009, James Berwick wrote:
> 
> > works fine.  Pinging a customer on our OC3 with any packet larger than 576 
> > bytes intermittently fails.
> >
> > This is the ATM OC3 config:
> > interface ATM1/1/0
> > mac-address 0000.0c71.1148
> > bandwidth 155000
> > no ip address
> > load-interval 30
> > atm ilmi-keepalive
> > end
> 
> First thing I'd try here would be to configure some ubr value on the 
> OC3, set it to 120 megabit/s or something like that. If that helps,
>  increase until you get close to wirespeed and see if the problem 
> creeps up the higher the UBR. The behaviour you're seeing is alike 
> to what I've seen when there is a cell policer dropping cells somewhere.
> 
> -- 
> Mikael Abrahamsson    email: swmike at swm.pp.se
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------- End of Original Message -------