[nsp] 7206vxr pps & mbit/s limits

[Hank Nussbacher]

At 07:33 PM 27-10-03 -0500, jlewis at lewis.org wrote:
>I see there was a similar thread about a year ago...but now I'm wondering
>what I should reasonably expect from a 7206vxr NPE300.  I've got one
>routing betweeen several FE's, doing OSPF, BGP, ISL, some ACL's, policy
>routing to block nachi pings.  CPU load is pretty constant around 50%
>except for the bgp scanner spikes.
>
>We recently moved a FE transit connection to it, and that seems to have
>pushed it over (or at least a lot closer to) the edge.  If I add up all
>the 30s avg bps/pps, I get (at this moment) 125mbit/s and 37kpps.  When we
>moved that busy transit FE onto this router, we immediately started
>getting fairly constant underrun errors on the interface and output drops.
>I was able to considerably reduce the output drops by increasing the
>hold-queue, and this may have even reduced the frequency of underruns, but
>we still get them regularly.
>
>Previously, this transit FE was on a 7500 (RSP4, VIP2-50s) that seemed
>perfectly happy with the traffic.
>
>Is upgrading to a faster NPE (NPE400?) going to make much difference, or
>would we have to go to NSE1 or NPEG1 to see much improvement?  I'm
>wondering if we ought to just go with another 7500...perhaps the
>distributed architecture really does beat the 7206 and its single
>processor.

NPE400 (32% CPU):
   5 minute input rate 66578000 bits/sec, 14926 packets/sec
   5 minute output rate 37219000 bits/sec, 15310 packets/sec
   5 minute input rate 20485000 bits/sec, 12206 packets/sec
   5 minute output rate 52021000 bits/sec, 11112 packets/sec
   5 minute input rate 3323000 bits/sec, 798 packets/sec
   5 minute output rate 1143000 bits/sec, 1504 packets/sec

-Hank


>----------------------------------------------------------------------
>  Jon Lewis *jlewis at lewis.org*|  I route
>  Senior Network Engineer     |  therefore you are
>  Atlantic Net                |
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