HMC and Second iSeries

I have a HMC with 4 ports running V7.3.0 I have it connected to one new
iSeries, 8203-E4A, a power 6 box. It is connected using Eth2 @
192.168.128.1 providing DHCP and a direct connect Ethernet cable.

I also had Eth3 cabled to an older 9406-520, a power 5 box but to the
HMC2 port. (The HMC1 port is attached to a switch with the default IP
address of 192.168.2.147.)

I cannot shut down this older production box easily, especially remove
power to have it pick up an IP address as it is 2000 miles away. I was
trying to put the Eth3 adapter on the HMC into the 192.168.3.147 subnet
but it does not offer that when you select private and DHCP. If I
select open, I can enter the hardcoded IP address.

Now since this is cabled direct, what is the proper way to get the HMC
and 520 talking? I have access to ASM via the HMC1 port. Is it
possible to set the HMC 2 port to pull the IP address from the HMC Eth3
if I configure that for DHCP? Again I cannot remove power from the 520
server to reset the FSP so I need to do this live without crashing the
server too.

Chris Bipes
Director of Information Services
CrossCheck, Inc.