SUMMARY: IP Multpathing (NEW)

Ok, aside from the script I wrote, wich works if the interface changes
it state to down (which doesn't happen on only a link failure) I got
another resource.

So I will share

http://www.eng.auburn.edu/~doug/howtos/multipathing.html

It is set up to do like I want, it may work well for others also.


Jeremy Russell
Network Administrator, CNI
580-272-2707

>
>>Well, Thanks to all who replied.  These are the resources I was
pointed
>>to for IPMP
>>
>>http://www.samag.com/documents/s=7933/sam0305a/0305a.htm
>>
>>http://www.sun.com/blueprints/
>>
>>http://www.eng.auburn.edu/users/doug/howtos/multipathing.html
>>
>>http://www.sun.com/solutions/blueprints/0327-608/2011.pdf
>>
>>But, I ended up not using IPMP, I can't have to active IP's.
>>
>>So I wrote this little script to run.
>>
>><------------------ cut here ------------------------->
>>
>>#!/bin/sh
>># This script will check the status of the nic, and fail over if there
>>is a problem.
>>PATH=/bin:/sbin:/usr/bin:/usr/sbin
>>
>>INTA="iprb0"
>>INTB="iprb1"
>>IP="10.64.16.1"
>>HBIP="192.168.255.1"
>>
>>FAULT="$1"
>>
>>PING="ping -c 1 -t 1"
>>
>>while [ 1 = 1 ]
>>do
>> case $FAULT in
>>    1)
>>       $PING $IP >>fault.log 1>&2
>>       if [ $? = 1 ]
>>         then
>>           ifconfig $INTB $IP down
>>           ifconfig $INTB $HBIP netmask 255.255.255.252 -failover up
>>           ifconfig $INTA down
>>           ifconfig $INTA $IP netmask 255.255.0.0 failover up
>>           FAULT=2
>>       fi
>>      ;;
>>    2)
>>       $PING $IP >>fault.log 1>&2
>>       if [ $? = 1 ]
>>         then
>>           ifconfig $INTA $IP down
>>           ifconfig $INTA $HBIP netmask 255.255.255.252 -failover up
>>           ifconfig $INTB down
>>           ifconfig $INTB $IP netmask 255.255.0.0 failover up
>>           FAULT=1
>>       fi
>>       sleep 1
>>       ;;
>>    reset)
>>       ifconfig $INTB down
>>       ifconfig $INTB $HBIP netmask 255.255.255.252 -failover up
>>       ifconfig $INTA down
>>       ifconfig $INTA $IP netmask 255.255.0.0 failover up
>>       ;;
>>    *)
>>       echo "usage: $0 { 1 | 2 | reset } ( where 1 or 2 is the STANDBY
>>nic )"
>>       exit
>>       ;;
>> esac
>>done
>>
>><-----------------------  Cut again
>>------------------------------------->
>>
>>
>>The only problem is this will only fail over on a complete interface
>>failure,  A link failure will don nothing.  Does anyone have a take on
>>what I might do to sense a link failure (some ifconfig option maybe?).
>>
>>Thanks for the help!!
>>
>>
>>Jeremy Russell
>>Network Administrator, CNI
>>580-272-2707
>>_______________________________________________
>>sunmanagers mailing list
>>sunmanagers@sunmanagers.org
>>http://www.sunmanagers.org/mailman/listinfo/sunmanagers
_______________________________________________
sunmanagers mailing list
sunmanagers@sunmanagers.org
http://www.sunmanagers.org/mailman/listinfo/sunmanagers