RE: HMC Connectivity Help

Thanks, Rob.

So just to be clear, you have one connection from your HMC to your network and the IBM i servers are plugged into the same reachable VLAN? Do you use the standard ethernet ports on the servers, or do you plug an ethernet cable from the network switch to one of the HMC ports?

Thanks!


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Rob Berendt
Sent: Thursday, June 8, 2017 9:56 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: Re: HMC Connectivity Help

"Best" is in the eye of the beholder.

There are those who say it's ok for Payroll and other non critical stuff to be on your open internal network but your FSP's should be on their own private network. I suspect they know of some leak into FSP that I'm not aware of or some such thing. In their school of thought your HMC would utilize two NIC's. One would go to a separate subnet, vlan or physical network to your FSP's and the other NIC would be for connecting to your open internal network for remote HMC capability.

That being said, I just use one NIC in my HMC and put the FSP's (power systems management port), HMC and my open internal network all together.
Just this week I had to get into my FSP's directly using ASM because of an HMC issue (replacement mother card vs HMC password issue). So having to go into the cones of silence room to get into ASM would be a bummer.
Especially after we move this to the offsite data center.

We also have redundant HMC's (thank God) which can control the machines in each other's city in a pinch (like this week).


Rob Berendt