Re: Interesting IP issue on my IBM i (all interfaces down, even LAN console)

Something smells 'switchy' :-)

From a PC on the same subnet:

If you PING the IP address then do arp -a do you see the IP address in the returned list?

If you do does it have a valid mac (Physical) Address assigned?

If so can you log into the switch and show it's mac address table to see on which port that the switch believes those mac address exist?

You didn't say so I'm assuming your Power System has just the base Ethernet adapter with ports T5 and T6. The LAN console and the IBM i IP stack are independent AND each uses one of the two ports. Because of this it's exceptionally unlikely this is an IP problem. Also unlikely to be a cable problem at least from the switch to the server since there are two of 'em.

Could be the switch itself and that is my #1 suspect.

Could also be the Ethernet adapter in your Server. Bad news if this is the case is that it's on the planar board so replacement means the entire board. Good news is you can abandon those ports and add a 5706 card and use that instead.

Once you do get back into the machine again record the MAC addresses for the card's two ports for future troubleshooting.

- Larry "DrFranken" Bolhuis

www.frankeni.com
www.iDevCloud.com
www.iInTheCloud.com

On 1/3/2014 11:40 PM, Bradley Stone wrote:

Well, it's back down again. It was up working for a while, now the same
thing. Can't ping any IP interface, not even the LAN console.

I guess I'll look into it more over the weekend. The governor shut down
school on Monday so I'll have my wife and kids to help too (*cough*). :)

Brad


On Fri, Jan 3, 2014 at 10:30 PM, Bdietz400 <bdietz400@xxxxxxxxx> wrote:

Not being able to ping the LAN console address leads me to think something
else happened to the system(not a tcpip issue). The LAN console tcpip
stack is in the lic where the "regular" tcpip is in the OS.

Check your logs to find the real cause of the outage.

--
Bryan

On Jan 3, 2014, at 10:55 PM, Bradley Stone <bvstone@xxxxxxxxx> wrote:

I have a monitoring service that tells me when my web site is up or down.
It's hosted on my i (now to be called AS/400 from now on) 515 running

V5R4

at my office.

Tonight I got an email saying it was down. Cool, it works. Not cool, my
site was actually down.

I got on the LAN that the AS/400 is on. Couldn't ping any IP interfaces

on

it. Not even the LAN console IP address.

I ended up doing a "manual IPL" and things were fine after that.

But that leads me to ask... if even my LAN console IP was down, how the
heck am I supposed to be able to get onto the machine to see what is

going

on? I was quite troubled and now have a bald spot on the side of my head
where I was scratching it. :)

Thanks for any info... after this, I'd actually like to be able to set

up

a dedicated PC to be a console, preferably not over IP. If that's
possible, I'm all ears as I have multiple old laptops I could use for
consoles. :)
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