NIC card Fail-Over configuration

[Nikee Reddy]

Hello,

We have 2 NIC cards in the server. One of them should serve as a primary NIC card and other one should server as a secondary/fail-over.

Here is the primary NIC config:
#8/8/1/0
INTERFACE_NAME[0]=lan0
IP_ADDRESS[0]=198.102.24.133
SUBNET_MASK[0]=255.255.255.0
BROADCAST_ADDRESS[0]="198.102.24.255"
INTERFACE_STATE[0]=""
DHCP_ENABLE[0]=0

Please let me know how can I configure the 8/12/2/0 NIC as a fil-over to the first card?

Thanks,
Nikee

[John Payne_2]

one way is to purchase the product called 'Auto port Aggregation (APA)' and set up the cards as an aggregate. It allows you to either aggregate the cards together to give a bigger pipe, and/or set up a failover port. We have this on one of our machines, and it works great after you patch it...

Hope it helps

John

[A. Clay Stephenson]

There is no standard "failover" method. You need to purchase Auto-Port Aggregation (APA) or ServiceGuard. APA is probably you best choice although it would be possible to script a solution around the ifconfig command.

[Dagmar Boelen]

Hi,

I think MC Service Guard can do the thrick. I'll try to find a manual for you!

[melvyn burnard]

there is nothing standard to let you do this, you would have to look at APA, see:
http://docs.hp.com/hpux/netcom/index.html#Auto%20Port%20Aggregation%20(APA)

or use ServiecGuard, see the Managing MC/ServiceGuard manual at:
http://docs.hp.com/hpux/netcom/index.html#Auto%20Port%20Aggregation%20(APA)

[Steven E. Protter]

Here is a scratch script.

Poor man's service guard. Absolutely untested.

assumes primary NIC is lan0 secondary is lan1

# try five times, timeout is 30 seconds

ping hps_ip_address -n 5 -m 30
rc=$?
if [ rc ne 0 ]
then
mailx -s "NIC failover occurred" sysadmins@yourdomain.com
ifconfig lan0 down
ifconfig lan1 192.168.0.15 netmask 255.255.255.0 up
rc=$?
fi

if [ rc ne 0 ]
mailx -s "NIC failover attempt failed" sysadmins@yourdomain.com
fi

SEP

[Caesar_3]

Hello!

HPUX had no option that build in and if you
want so you need to by auto-port aggregation
that will do the job.

Caesar

[Bill Hassell]

You need to define failover more accurately. While APA will allow you to configure both cards with the same address and use both at the same time, failover implies multiple paths to the network. Just having a spare card doesn't provide much redundancy. You need to have your network switch setup to provide proper failover too--APA requires features that don't exist in most switches. And a good failover solution would include redundant switches.

[Suresh Patoria]

Hi,

Following entry put in the /etc/rc.config.d/netconf file

INTERFACE_NAME[1]=lan1
IP_ADDRESS[1]=192.102.24.*
SUBNET_MASK[1]=255.255.255.0
BROADCAST_ADDRESS[1]="198.102.24.255"
INTERFACE_STATE[1]""
DHCP_ENABLE[1]=0

and also put the ip address entry in /etc/hosts file

and restart the service or system

check the through ifconfig,lanscan, netstat -in or lanadmin whether all interface up or not