MCSG manually fail a network card to backup card

[John Dvorchak]

I have a 3 node MC Service Guard cluster configured with two NICs on each subnet. A primary and a hot spare backup. One of the cards started logging massive errors and since this is a remote system I was looking for a way to manually fail the suspect LAN card and let Service Guard start using the hot spare without pulling the CAT 5 cable out of the bad card.

The systems are N class HPUX 11i MCSG 11.09 and
HP A5230A/B5509BA PCI 10/100Base-TX Addon LAN cards.

I am looking for a command to run from a telent session to shutdown the bad card and get the spare working in it's place just as if I pulled the cable.

[Rajeev Shukla]

I was wondering why bringing down the lan interface wouldn't work.

Try bringing down the lan interface say lan1 using ifconfig
#ifconfig lan1 down
this will disable lan1 and the other interface should take it up buy itself.

[melvyn burnard · Accepted solution]

markin a lan card "down" will not cause a lan card failover wihtin SG, this is not valid.
The lan failover will only occur if hte lan manager monitor of SG detectes here is no traffic on the primary lan, or if htere is no polling available at tcp or udp levels between cards across the nodes.
You will need to physically have the cable removed, or if you have a switch in hte configuration, set the port that the cable is conected to be off. this should cause the detection of no traffic and/or no communication, hence the lan should failover.

[John Dvorchak]

Thank you Melvin. That is not the answer I wanted to hear but you confirmed my suspicions. I guess there is no cm command to fail a network adapter like a package. Perhaps there should be one?

FYI the LAN switch port was set to 100 autonegiate and the NIC was set to 100 FD. When I rebooted the system, after patching, is when the errors started showing up. I had the Network people set the switch port to 100FD and it is working fine now.