OTS9000 & High Availability issues

[Enrico Venturi]

Hi to everybody,
I'm using OTS9000 with 802.3 subnets.
In the platform I installed also MC/ServiceGuard.
I've two lan cards: the main one is lan0, the backup one is lan1.
I know that is NOT possible to dinamically reconfigure OTS9000 802.3 subnets: if I want to change the subnet supporting lancard I need to stop/start OTS9000, then I have to reboot the node.

My question is:
having two lan cards, is there any solution to make OTS9000 802.3 subnets safe in respect of lan card failures?
is there any way to use lan1 when lan0 fails?
I'm able to set up the lan1 MAC address making it equal to the lan0 one ... but this doesn't solve the problem.

Thanks to anyone will reply to my question

[melvyn burnard]

Please read the Managing ServiceGuard manual available at http://docs/hp/com/hpux/ha
specifically:
http://docs.hp.com/hpux/onlinedocs/B3936-90026/B3936-90026.html

titled: Using OTS/9000 on the LAN

[Enrico Venturi]

Thank you for the reply, but this is not the expected
answer to my question:
I don't want to switch the application from the main node
to the spare one ... I simply want to use the lan backup on the same node ...

[Eric Rainer · Accepted solution]

Hello
Just to start off: you MAC addresses must be unique or you will confuse the CLNS routing and any IP routing that you have on that LAN segment

On having a standby LAN inteface for a 802.3 subnet: You have to setup the lan interfaces as main and standby as explained in the SG manuals so:

configure lan0 as 802.3
run OSI on lan0
lan1 is unconfigured as the SG manuals recommed

In your cmclconf.ascii in the NODE_NAME section
specify
NETWORK_INTERFACE lan0
HEARTBEAT_IP X.X.X.X
NETWORK_INTERFACE lan1

and then in the pkg_dir/package.ascii
Enter the network subnet of lan0 to be monitored
SUBNET x.x.x.0 (if it has a 24 bit mask)
and if the interface fails, all configuration information (excluding the MAC address) should be move to lan1 (IP address and NSAP)
hope it helps