[c-nsp] Issue with Multilink PPP when going from 12.3T to 12.2S

[Rodney Dunn]

Is this from the 75xx or the other side. What is the other side
of the bundle.

Please provide 'sh ppp mul' and make sure dCEF is on for the 75xx.

It's pretty near impossible to tell the full difference in the
switching paths between 12.3T and 12.2S (what version of
12.2S by the way?).

On Thu, Oct 20, 2005 at 05:54:36PM -0400, Dave Temkin wrote:
> I just "downgraded" (if you can call it that) a 7500 from 12.3T to 12.2S,
> and am noticing a performance change on a multilink PPP bundle of 2 T1's.
> 
> Before, using a packet generator, I was able to get the link up to just
> over 3Mbps.  Now, I'm barely able to break 2.5.
> 
> I noticed the following - notice the high amount of reordered packets.
> 
> Multilink1, bundle name is CR1
>   Endpoint discriminator is CR1
>   Bundle up for 00:29:48, 1/255 load
>   Receive buffer limit 32768 bytes, frag timeout 1000 ms
>     0/0 fragments/bytes in reassembly list
>     0 lost fragments, 182847 reordered
> 
> 
> These are two routers connected back to back, so it's not that the lines
> are different lengths...
> 
> The packet sizes are the same between my tests, so I don't think it's any
> difference from that direction.
> 
> Does anyone know of any changes to the handling of MPPP between the
> versions?
> 
> Thanks,
> -Dave
> 
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