From: Alan Kong (kkkong@ee.cuhk.edu.hk)
Date: Thu Sep 15 2005 - 21:35:55 EDT
Thanks to:
njd@ndietsch.com
john4251@gmail.com
alineberger@navcirt.navy.mil
ndo@unikservice.com
kev.smith@atosorigin.com
jcc.costa@gmail.com
Michael.Horton@acntv.com
and others on holiday.
Sun IPMP ONLY "load balance" outgoing network traffic. In order to
reduce the NIC failure warnings messages in syslog, the
"FAILURE_DETECTION_TIME" in "/etc/default/mpathd" was set back to 10000
instead of 2500. The response from default gateway was slow and extra
gateways were added to improve the response time for NIC "probe".
The in-bound network traffic still switch over from one NIC to another
NIC and vice versa every hour or so. I don't know whether this is the
behaviour of IPMP from Sun. I could not find further info to confirm.
Regards
Alan
Alan Kong wrote:
> Dear Managers,
>
> We have IP Multipathing setup on 2 NICs on a Sun V240 server and
> observed load balancing was not working.
>
> Our network monitoring(MRTG) program on the 2 network ports on
> different switches have network traffic recorded. When there was
> traffic recorded on one NIC, there appeared to be no network traffic
> on the other NIC. This lasted for about an hour and the network
> traffic switched over to the other NIC. The switch over of network
> traffic on both NICs repeated on an hourly fasion.
>
> Evironment:
> - Solaris 2.8 running on V240 server in NIS+ environment
> - Both logical addresses have been added to DNS and NIS+ host table
>
> /etc/hostname.bge0:
> v240server-bge0 netmask + broadcast + group production deprecated
> -failover up
> addif v240server netmask + broadcast + failover up
>
> /etc/hostname.bge1:
> v240server-bge1 netmask + broadcast + group production deprecated
> -failover up
> addif v240server-dum netmask + broadcast + failover up
>
> Both network ports were running GBits. Applications and users uses
> v240server address.
>
> Please advise on solving the problem and whether IP Multipathing works
> in NIS+ environment since only one host address (v240server) was added
> to the NIS+ cred table.
>
> Thank you.
>
> Regards
> Alan Kong
> _______________________________________________
> sunmanagers mailing list
> sunmanagers@sunmanagers.org
> http://www.sunmanagers.org/mailman/listinfo/sunmanagers
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