Setting IPMP on Solaris 10 - link based detection

activate ethernet interface

# ifconfig ce0 plumb
# ifconfig ce1 plumb

Giving IP Address and IP Multipathing

# ifconfig ce0 10.172.75.2 netmask 255.255.255.0 broadcast + group ipmp1
# ifconfig ce1 group ipmp1 up

Now we only have 1 IP address ( 10.172.75.2 ).

If this setting keep on when system reboot, check all following conf file.

# more /etc/hosts
127.0.0.1 localhost
10.172.75.2 server01
# more /etc/netmasks
10.172.75.0 255.255.255.0
#more /etc/defaultrouter
10.172.75.1
# more /etc/hostname.ce0
server01 netmask + broadcast + group ipmp1 up

For active-active configuration :

# more /etc/hostname.ce1
group ipmp1 up

For active-passive configuration :

# more /etc/hostname.ce1
group ipmp1 standby up

Check network interface status for active-active :

# ifconfig -a
ce0: flags00843 mtu 1500 index 4
inet 10.172.75.2 netmask ffffff00 broadcast 10.172.75.255
groupname ipmp1
ether xx:xx:xx:xx:xx:xx
ce1: flags00843 mtu 1500 index 5
inet 0.0.0.0 netmask ff000000 broadcast 0.255.255.255
groupname ipmp1
ether xx:xx:xx:xx:xx:xx

Check network interface status for active-standby :

# ifconfig -a
ce0: flags00843 mtu 1500 index 4
inet 10.172.75.2 netmask ffffff00 broadcast 10.172.75.255
groupname ipmp1
ether xx:xx:xx:xx:xx:xx
ce0:1: flags00843 mtu 1500 index 4
inet 0.0.0.0 netmask ff000000 broadcast 0.255.255.255
ce1: flagsi000842 mtu 0 index 5
inet 0.0.0.0 netmask 0
groupname ipmp1
ether xx:xx:xx:xx:xx:xx
	
0
Gary Jarrell replied Mar 23, 2010
Requires two hostname.xxx files
Requires 3 IP addresses on the same LAN, and you must be able to ping the default GW

hostname.<primary>
<real ip> deprecated -failover netmask <netmask> broadcast <broadcast> group <GROUP> up \
addif <virtual> netmask <netmask> broadcast <vip> up

hostname.<secondary>
<real ip> netmask broadcast group <GROUP> deprecated -failover standby up

to verify bounce the box. You can also restart the network services and it should pick it up as well.

Source : http://docs.sun.com/app/docs/doc/816-4554 
http://unix.ittoolbox.com/groups/technical-functional/solaris-l/configuring-ipmp-on-solaris-10-3391875