Re: Adapter failover using Virtual IP and Proxy ARP -- one question -- MIDRANGE-L

Charles,

It's possible that you could make this work but only if you have a bridge between the T-R and Enet segments of your network. Even then though the bridge would have to pass the gratuitous ARP packets which are sent out when an adapter fails.. What I'm not sure of now is how you make the T/R and Enet adapters work on the same IP subnet without confusing the system or the client systems. What are your IP addresses and subnet masks for the various interfaces?

Sure you can have multiple virtuals no problem there but the key to redundancy is to use just one virtual that's 'attached' to multiple physicals in the same subnet. And don't forget the schowler routes for load balancing!

 - Larry

CWilt@xxxxxxxxxxxx wrote:

There's a section of the infocenter providing instructions on how to setup
"Adapter failover using Virtual IP and Proxy ARP".

http://publib.boulder.ibm.com/iseries/v5r2/ic2924/index.htm?info/rzajw/rzajw
lbvip.htm

I just have one question.  If I've got Ethernet and Token Ring adapters on
the same subnet, can they all have the same virtual IP?

I've got two 10/100 Ethernet adapters, one Token Ring, and one fiber-optic
all on the same IP subnet.  I'm looking to add some redundancy; so I'm
planning on assigning new IP address to the physical Ethernet adapters and
make the current address virtual.  Note that most clients are connecting via
IP address and not name.

I've tested having multiple virtual IP addressing and it seems to work fine.
I'm just wondering if it makes sense to handle the fiber and token-ring
adapters the same way.

Thanks, Charles

-- Larry Bolhuis IBM eServer Certified Systems Expert: Vice President iSeries Technical Solutions V5R2 Arbor Solutions, Inc. iSeries LPAR Technical Solutions V5R2 1345 Monroe NW Suite 259 iSeries Linux Technical Solutions V5R2 Grand Rapids, MI 49505 iSeries Windows Integration Technical Solutions V5R2 IBM eServer Certified Systems Specialist (616) 451-2500 iSeries System Administrator for OS/400 V5R2 (616) 451-2571 - Fax AS/400 RPG IV Developer (616) 260-4746 - Cell iSeries System Command Operations V5R2