[foxboro] Fwd: Re: 0% idle time & More than 80% iowait on AW51B

You have a DCS Plant Information Network connecting the SUN boxes 
using secured CISCO switches. This network has been masked from 
the external computer network as well.

Why do you have to connect the AW directly to the external network ?
I believe there is a CISCO-Works diagnostic software running on this network, 
which could pin point the traffic on any port .

Regards
GOPS

------------ Forwarded Message -----------
Ajay.Tathgir@xxxxxxx
 wrote

Thanks a lot all of you. So can it be concluded that iowait time also takes
into consideration the ethernet port activity, apart from disk activity etc
etc.


Thanks once again


Best Regards


Ajay Tathgir




                                                                                
                                                 
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At least one customer uses cron(1) and ifconfig(1) to periodically shutdown
the "2nd Ethernet" port. Turning the port off with ifconfig frees the
resources trapped by the driver when it sees IPX packets. Of course, during
that period, you can't use the port.

The better approach in general is to limit access to the AWs/WPs through
the
use of routers/firewalls. You should consider installing a router at the
minimum. With the technological convergence these days, you may find
something advertised as a switch that can filter IPX, but I'd be happer
with
a router/firewall.


Hope this helps.

AJ





 
 
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