Same IP address in diferent cards

[miguelangelga]

Hi...

Somebody can tell me if I can configurate the same IP address in diferent cards?. I have a dual ethernet card, I mean, the MAC address is the same for both interfaces, but when I configure the same IP address in both cards, just one interface is up, I think that is correct, but exist a possibility for both interfaces are up at the same time?, I need additinal software?.

I'm using Solaris 8 in a sparc station.

Thanks!!!

Regards!!

 

[z28sarefun]

You might find it's easier to do that from the network side. Many switches can basically load balance two private IP addresses with one public IP. The switch/router handles the NAT and all the link trunking and such.

There was software called Sun Trunking which worked with QFE cards and other multiport Sun interfaces, but I think Sun has quit supporting it in favor of the network side solution. But, it may be worth looking into.

Or the really easy way is to use DNS to round robin requests from a CNAME to 2 IP addresses. This is kinda dumb though, and won't recover from a partial failure I think.

HTH,
Brian

 

[daFranze]

what is the intention of having 2x the IP Adress on the same host?
do you want to double the network speed of this host or just for failover?

network speed: trunking - as Brian mentioned - is the solution
failover: you will need some Cluster/HA Software or write your own if this is the only function you need...

Regards
-- Franz
Sorry I'm not a native spaeker, I'm from Munich, Germany - "Home of the Whopper", oh no, "Home of the Oktoberfest" ;-)
Solaris System Manager; I used to work for Sun Microsystems Support (EMEA) for 5 years