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18 Posts
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2760
November 9th, 2016 13:00
What network interface is iDRAC tied to on a PowerEdge 1000e?
I've got a PowerEdge 1000e with a bunch of blades plugged into it and it also has *six* M6220 ethernet switches on it.
I've configured each server so that it has a distinct IP on each switch from the following subnets:
A1 - public IPs (111.222.333.*, for example)
A2 - private IP's (192.168.10.*)
B1 - private IP's (192.168.20.*)
B2 - private IP's (192.168.30.*)
C1 - private IP's (192.168.40.*)
C2 - private IP's (192.168.50.*)
Each server A can ping any other server B on any of B's six IP's (so they can all "see" each other on all of the switch interfaces.
Additionally, the CMC interface has a public IP, and it's plugged into switch A1 (the public IP switch).
Now, when I want to use the iDRAC interface (to access, say, the console of one of the servers), it works *fine* (meaning that I'm able to user a browser on one of the blades to access the iDRAC console of any *other* blade) if I assign public IP's to the iDRAC interfaces. However, if I assign an address from any of the *private* subnets (because my public IP's are scarce), I'm not able to reach the iDRAC console.
Are the iDRAC interfaces only tied to A1 or something, or is there a reason why I shouldn't be able to reach them via the other switches?
jemenake
18 Posts
1
November 10th, 2016 08:00
So, it appears that the iDRAC facilities use the physical interface on the CMC, not on any of the A1-C2 networking modules. Even though that interface was plugged into our public-IP network (along with our A1 network interface), I was able to avoid consuming public IP's with our iDRAC interfaces by issuing private IP aliases to the A1 interfaces on our blades.
jemenake
18 Posts
0
November 9th, 2016 13:00
I may have found a clue. It's looking like the iDRAC stuff isn't built into the *blade*, but into the *enclosure*... which would mean that, when you access the iDRAC, the traffic isn't going into one of the M6220 switches, but into the CMC ethernet interface. In other words, the CMC ethernet interface is handling traffic to the CMC's IP as well as the IP's for all of the iDRAC interfaces.
That would explain what I'm seeing.