IPMP on 2 physical interfaces

UNIX Solaris
1

Hi Community,

I've a problem with IPMP: I have 2 physical interfaces, 1 "physical IP" and 1 VirtualIP.
My question is:

is it possible to have IPMP configuring 2 physical interfaces with the same "physical" IP Address?

for example:

ce0 10.10.10.10
ce5 10.10.10.10

and

VIP 10.10.10.11

it's very Urgent:o

Thank you very much

2

As far as I know using the same IPs on both will not work since both interfaces are 'up' at the same time.

3

To my knowledge, you will need to have a different IP address for each physical ethernet port; these addresses are called "test addresses" and you need one address for the virtual port and this is called "user address". The difference is that the "test addresses" are not exposed to the network; they are used internally by the OS for the purpose of IPMP

4

With two Interfaces
setup your interfaces like this......

/etc/hostname.ce0
192.168.10.10 netmask + broadcast + group ipmp0 up

/etc/hostname.ce1
group ipmp0 up

# ifconfig -a
ce0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
inet 192.168.10.10 netmask ffffff00 broadcast 192.168.10.255
groupname ipmp0
ether 0:3:ba:93:90:fc
ce1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 5
inet 0.0.0.0 netmask ff000000 broadcast 0.255.255.255
groupname ipmp0
ether 0:3:ba:93:91:35

NOTE: you must set local MAC in the nvram
this is driven by link based fault dection, you don't need any extra IP address.

5

or...

/etc/hostname.ce0
deprecated -failover group ipmp0 up
addif 192.168.10.10 netmask + broadcast + up

etc/hostname.ce5
deprecated -failover group ipmp0 up

6

Sun documentation (System Administration Guide: IP Services) notes that "You need to configure a test address only if you want to use probe-based failure detection on a particular interface. Test addresses are configured as logical interfaces of the physical interface that you specify to the ifconfig command" also "You should configure only test addresses on a standby interface"