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June 25th, 2014 11:00

M1000e with M8024 (problem connecting to switch)

I have a Dell Poweredge M1000E blade chassis with two M8024 switches.

I configured the IP addresses of the M8024 (B1 and B2) from the web CMC.

All ports on the chassis controllers are connected to my network.

I can connect with no problems to the M8024 in B2 slot, but cannot connect / ping / access the M8024 in B1.  I have tried power cycling/reseating the switch but no luck.

Any suggestions?  I have not tried to do anything via SERIAL connection.

July 3rd, 2014 10:00

I figured out the problem!  

On the M1000e CMC Chassis Overiew / Network / VLAN config.  The VLAN Tag setting was enabled for the M8024 in B1.  This was preventing it from working properly on our network, because the vlan defined for the VLAN ID specified was not configured.  I unchecked the box in the "Enable" column (for B1), and it now can be accessed!

Thanks!

5 Practitioner

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274.2K Posts

June 25th, 2014 13:00

where on the network are you trying to access the switch?

If from a server on the M1000e server, how is that port on the B2 M8024 configured?

If from somewhere else on the network, how are the external ports configured, and what do they plug into?

5 Practitioner

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274.2K Posts

June 26th, 2014 13:00

the only way there would be redundancy between the two switches is if they were stacked.

So you are able to configure the switch in slot B1 from the CMC gui? You can apply an IP address and other settings to B1, through the CMC gui?

The problem is with pinging the IP address you assigned to the switch in B1?

What IP address did you assign to B1?

From where are you trying to ping B1? A server, the CMC, some other device on the network?

How does the switch connect to the rest of your network?

June 26th, 2014 13:00

I first log into the CMC via a web browser.

I then click on the B2 module (10GbE XAUI - the M8024).  Then I Click on the LAUNCH I/O Module button.

If I do this with the B1 module, it works.  I'm able to log into the 8024 GUI.  I am also able to configure the IP address of the modules from within the CMC web page.  Under Setup/Deploy (Deploy I/O Modules).  It shows each IOM Slot (A1/A2/B1/B2/C1/C2), along with the power state, DHCP config (on/off), and IP address.  I've given configured the IP address for each switch (B1 and B2).  B1 is the one i'm having a problem with..  It doesnt reply to a ping.  I can ping and access the module in B2 though with no problems.

June 26th, 2014 13:00

Could it be that it's running in some redundant mode, and i'm not able to make any changes to it?  I'm new to this blade chassis, and don't know all the 'ins and outs' of it yet.

June 27th, 2014 09:00

OK:

I have two NIC cables plugged into the CMC ports on the back of the M1000 (Top right and top left)

Here is my network info:

The network switch is on default native VLAN 476.  Each port on the switch is also trunked with other VLANs (80,81,1240,1241)

The subnet operating on vlan 476 is   ###.###.176.0 / 22 (subnet mask 255.255.252.0) (1024 IP's).

The IP of the CMC is ###.###.179.100, the IP of B1-80240-switch: ###.###.179.101, and IP of B2 is ###.###.179.102.

The IP of my workstation is ###.###.179.200

I'm accessing the CMC HTTP GUI from my workstation on the same VLAN 476 and same subnet.

From my workstation I can ping the CMC, and I can ping B2, but I cannot ping B1.

I can log into the CMC web GUI, and I can log into B2's web gui, but cannot log into B1.

I can connect the serial cable to B1, and access the CLI CMC.

I suspect the problem is  VLAN related, and that it's got a vlan tagged or something.  I think it may think that it's on a different vlan.  It used to be on a different network.  How, through the CMC CLI can I change the default VLAN for the switch itself?  I want to turn off the vlan, but I will be using VLAN's for the 4 ports on the back of it.

Sorry for all this confusion.

5 Practitioner

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274.2K Posts

July 1st, 2014 08:00

Can you please show the config of the external facing ports on B1?

What networking device does the external facing ports on B1 plug into?

Can you please show the config of the ports on that external device, that plugs into B1?

We should also look at the output from # show interfaces status, for the external facing ports on B1. Also look at the status on the other networking device, make sure those ports are up.

5 Practitioner

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274.2K Posts

July 3rd, 2014 11:00

Great to hear! thanks for keeping us posted.

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