[j-nsp] Half Duplex Routing Engine m40?

[Dennis Ponne]

Hi Richard,

I have collisions, and maybe a lot of traffic to my RE.

root at m40% netstat -I fxp1
Name         Mtu Network      Address             Ipkts Ierr    Opkts Oerr
Coll
fxp1        1514 <Link>     00.a0.a5.12.2b.53  547857291    0 1516194169
0 534209
 unit 0     1500                4 547857291    0 1516194171    0     0
root at m40% netstat -I fxp1 1
            input           fxp1           output
   packets  errs      bytes    packets  errs      bytes colls
       491     0      38897       1675     0     262849     0
       450     0      35001       1675     0     258568     0
       384     0      31293       1567     0     241454     0
       423     0      32083       1608     0     252570     0
       439     0      33495       1722     0     269006     0
       481     0      43136       1701     0     258673     0
       612     0      62634       1926     0     292448     8
       496     0      43312       1795     0     279691     2
       540     0      49734       1859     0     281387     0
       428     0      34058       1659     0     250424     0
       533     0      41299       1792     0     291351     0
       607     0      58859       1856     0     274839     1
       481     0      40363       1729     0     267334     0
       488     0      38913       1711     0     256778     0
       460     0      36663       1716     0     265628     2
       501     0      40829       1618     0     250348     0
       453     0      42644       1590     0     238365     1
       418     0      34597       1549     0     243705     0
       452     0      38610       1514     0     230089     0
       551     0      50253       1586     0     245823     0


The packets/s are high, maybe that is a problem?

The packet loss accurs on that router when one of our customers starts
their session, these are some root servers of verisign. G and H root
servers.

With 14400 pps as an average.

But a juniper can handle a lot more than that, as I state to the
specifications in the manual :)

So my router get's buggy on dns traffic. And that with a througput of
22mbit/s to 24mbit/s of dns traffic.

So i am really puzzeled.

Greetings,

Dennis

On Wed, 16 Feb 2005, Richard A Steenbergen wrote:

> FYI, collisions on the fxp1 aren't displayed in the cli, but you can take
> a look at your stats from the shell with:
>
> > netstat -I fxp1
> Name         Mtu Network      Address             Ipkts Ierr    Opkts Oerr  Coll
> fxp1        1514 <Link>     00.a0.a5.12.27.9e  62449090    0 64510642    0 76067
>  unit 0     1500                4              62449090    0 64510643    0     0
>
> This is on a box that does a fair amount of netflow export too, so in the
> grand scheme of things it isn't too bad. If you're really doing a lot of
> traffic on your fxp1 you may want to look in to why.
>
> You can check your traffic levels in real time like this (from shell):
>
> > netstat -I fxp1 1
>             input           fxp1           output
>    packets  errs      bytes    packets  errs      bytes colls
>         33     0      11364         25     0       4234     0
>         31     0       9881         32     0       5963     0
>         23     0       8658         18     0       2443     0
>         24     0       9735         18     0       3644     0
>         27     0       7732         37     0      27701     0
>         45     0       9895         42     0       5795     0
>         27     0       8268         19     0       3775     0
>         17     0       7716         15     0       2993     0
>         14     0       4895         10     0       1312     0
>         33     0       9395         40     0      28271     0
>         29     0       8720         29     0       4916     0
>         21     0       7893         12     0       1816     0
>         23     0      10774         16     0       3362     0
>         21     0       6914         20     0       3530     0
>         26     0       8606         27     0      12259     0
>         33     0      12551         26     0       5167     0
>         19     0       7114         15     0       2851     0
>         17     0       7211         12     0       1618     0
>         27     0       7943         21     0       3737     0
> etc
>
> --
> Richard A Steenbergen <ras at e-gerbil.net>       http://www.e-gerbil.net/ras
> GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)
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