IPMI dedicated LAN port VS gigabit LAN port


Recommended Posts

I was reading through the manual of the MOBO to find why it had 3 LAN ports on a 2 gigabit MOBO and it marks:-

 

{SomeNumberRelatingToDiagram} - IPMI LAN port

{AnotherNumber} - LAN port 1

{YetAnotherNumber} - LAN port 2

 

Can I ask if I need to install two LAN cables then? One for IPMI and one for local LAN? If so, it's fine, I have extra slots in my switch, it's just the fact that I don't have an extra Ethernet cable and I'd like to order them A.S.A.P. if I do need them (else I'll have to make the HTPC wireless or something along those lines).

 

Also, unrelated question (Kinda related, but, shhh):-

If I were to plug both LAN ports in (Gigabit ones, not IPMI), I assume I'd get two different IPs assigned by my gateway's DHCP server? If so, how would I utilize this to read/write data faster (Without doing something dodgy like copying one half of the files to one IP and the other to the other)? Not that I think I'd use 1Gbit/second, but, hey, you never know.

Link to comment

You could use one cable, IPMI will fallback to the regular lan port if nothing is connected to the management port. I believe it will only fallback to lan1 not lan2.

 

To your second question do a search for network bonding. There was some posts about it recently. I doubt it will show as two IP's on your router. Instead the two NICs would share a MAC address and the data is load balanced between them. At least that's the way I think it works, never tried it myself.

Link to comment

Yes, you need 2 LAN cables to 2 LAN ports. That is how I connected my X9SCM-F. IPMI and unraid have their own ip-address too.

 

I assumed the latter, yeah, I guess I'll have to buy a couple more cat6 cables off ebay.

 

Thanks.

 

Or try monoprice.com for the CAT6 cables....might be cheaper.

Link to comment

Yes, you need 2 LAN cables to 2 LAN ports. That is how I connected my X9SCM-F. IPMI and unraid have their own ip-address too.

 

I assumed the latter, yeah, I guess I'll have to buy a couple more cat6 cables off ebay.

 

Thanks.

 

Or try monoprice.com for the CAT6 cables....might be cheaper.

 

I see dollars and "2PM Pacific time" and I didn't even bother to check if they ship internationally (shipping > ebay alone, for international), I'm located in the UK, and the cables are ~ are 2GBP for 7 meters.

Link to comment

You could use one cable, IPMI will fallback to the regular lan port if nothing is connected to the management port. I believe it will only fallback to lan1 not lan2.

 

To your second question do a search for network bonding. There was some posts about it recently. I doubt it will show as two IP's on your router. Instead the two NICs would share a MAC address and the data is load balanced between them. At least that's the way I think it works, never tried it myself.

 

Looked it up, looks more trouble than it's worth. Unless I start to see issues with 1Gbit/second (Which, I really doubt I will, since the drives don't even operate that fast, with the exception of the cache drive) then I'll just leave it at 2 sockets (IPMI and 1 gigabit).

Link to comment

Looked it up, looks more trouble than it's worth. Unless I start to see issues with 1Gbit/second (Which, I really doubt I will, since the drives don't even operate that fast, with the exception of the cache drive) then I'll just leave it at 2 sockets (IPMI and 1 gigabit).

 

You made the right decision IMHO. It would only add to the complexity of your setup and something else to troubleshoot if there's a problem. Yes, 1 gigabit is more than plenty for the average home setup.

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.