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Help needed! Network card Prioty question for RedHat Linux Servers.

post #1 of 10
Thread Starter 
Hey Guys I need help with a problem!

Im working on HP Servers, with a built in ethernet and a Network card too (PCI one). Half off all the servers built prioritizing the In built, whilest the other's built on the network card. How do I change them from the network card to the inbuilt one?

Remmber this is for a REDHAT LINUX SERVER smile.gif Help needed!
    
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post #2 of 10
Thread Starter 
Just noticed I posted this in the wrong place >.> Could a mod move it? =/
    
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post #3 of 10
Do you have both cards plugged in? I would unplug one of them personally.
post #4 of 10
Thread Starter 
One is Built in like I said. I would just pull them out, But Un-wirining, opeaning up and pulling out one card on 22 servers is not fun so I though I would ask first.
    
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post #5 of 10
Surely there is load balancing software where you can specify priority. Not sure why you are trying to go for in-built tho.
ifconfig "interface" down
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post #6 of 10
Thread Starter 
The Reason My work is going for the In-built is for a sperfic reason. Just knowing a directory / file would be good tongue.gif
    
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post #7 of 10
So it sounds like you don't have much experience with linux then?

If you're not using modprobe, then you just need to verify your mac addresses and make sure the IP you want being pushed on each mac is configured. In redhat there are files in /etc/sysconfig/network-scripts that have the startup config for each device. I believe there is also a config program, run command "system-configuration-network" (I think), but I don't generally use that. If all of your servers are the same model, most likely the mac addresses of your onboard will be the same, or fairly close, so it's each to figure out which is which.
post #8 of 10
Quote:
Originally Posted by herkalurk View Post

If all of your servers are the same model, most likely the mac addresses of your onboard will be the same, or fairly close...

Assuming this was true what would happen if they were all connected to the same switch? eek.gif
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post #9 of 10
Quote:
Originally Posted by parityboy View Post

Assuming this was true what would happen if they were all connected to the same switch? eek.gif

My guess the switch would panic because it's seeing mac flapping. Had that happen on a switch where the computer was set up to trunk it's network ports, so sending out data on both with out any forethought, but the switch wasn't, so it kept telling us there was a mac flap problem. Didn't know where to send the data for the mac address traffic inbound.

At work we've bought a few quad port nics for our blades, and they all have the same 1st 5 sets of hex, last ones will be in succession.

a1,a2,a3,a4

It was a little crazy to see showing up in the vmware console.
post #10 of 10
Broadcast storms are a nightmare for productivity, but they can be fun to track down. After this happens once on unmanaged/half-managed switches, up-selling STP-capable hardware is that much easier. This has happened several times at one of my clients; once was caused by an unauthorized ethernet switch out on the sales floor paired up with users that think a cable unplugged is a cable that must be plugged in, and the other was in a similar circumstance except it was on the roof of one of their cold rooms. Like I said, I did enjoy figuring out where the issue was located.

All of the lights blinking in unison is pretty, though, I must admit.
Edited by Oedipus - 11/14/12 at 11:59pm
    
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