[c-nsp] ip tcp adjust-mss on LNS 7206VXR

[Rodney Dunn]

Yep. Exactly right.

The impact of resetting the MSS on one packet is probably less than
having to do fragmentation for all packets in a stream.

It's a rob Peter to pay Paul scenario.


On Thu, Jan 11, 2007 at 01:25:48PM -0500, Robert E. Seastrom wrote:
> 
> Rodney Dunn <rodunn at cisco.com> writes:
> 
> > I'd expect that removing the fragmentation part would result
> > in a net gain of overall performance through the box.
> 
> In a big big way.  Fragmentation is cheap, but the reassembly on the
> far end of the tunnel is by necessity process switched will thrash the
> everlasting you-know-what out of your CPU even at relatively low PPS
> rates.
> 
>                                         ---rob