[j-nsp] Miercom Competitive Performance Testing Results: Cisco ASR9000 vs Juniper MX960

Pekka Savola pekkas at netcore.fi
Fri Sep 25 01:11:04 EDT 2009

On Thu, 24 Sep 2009, Richard A Steenbergen wrote:
> Well, we saw something similar (that I've described on this list several
> times) but not exactly what you described, starting somewhere in 7.x and
> continuing until 8.5 where it was fixed on most platforms (including
> MX).

For reference, this thread from Feb 2007 describes it at least once:

We saw this issue as well, but it apparently (for us), resulted in in 
RIB sync slowness only; there was no (apparent, or at least major) 
packet loss.

Somewhere around 8.x -- maybe 8.5 or earlier -- it got worse instead 
of got fixed.  Now it's causing significant packet loss as well. 
Maybe we have a cornercase that got worse.  Or there really are some 
architecture specific differences that might explain the difference in 
behaviour (in particular I'm speculating about VERY old, memory/CPU 
constrained T320 FPCs).  But the bad news is that JTAC's response is 
that this is working as designed.

Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings

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