IP address conflict

[edtech]

Sorry. I've been at a user conference for my %DayJob% ERP.

To answer your questions:
1. To turn off spanning tree in a dell power connect use the command line command 'No spanning-tree" In order to use this you will need to log into the switch.
2. You could us ethe ip address track i mentioned in an earlier thread to find the IP Address of the switch. The switch and server cannot have the same IP Address or they would have a conflict.
3. Yes Port 37 on the switch
4. Basically. It depends upon the device. I would disconnect it the network and see if it fixes the problem
5. Yes. This would also depend upon the device.

 

[teksquad]

There are very few reasons ever to disable spanning-tree. Spanning tree is your loop prevention mechanism at layer 2. Has nothing to do with routing etc. Even if the current switch isnt trunking to another switch, there shouldn't be a reason to disable it. The switch should support some sort of "portfast" capability in which your access ports connected to hosts can bypass the listening/learning stages of spanning tree (30 seconds total on cisco switches) and move right to forwarding.

 

[brockalee]

Really hate to bring up this older thread, but thought I'd post my resolution.

I plugged the server's ethernet cable into another port on the switch and that seems to have fixed it.

Reminds me of Cousin Eddie's quote:
"Falls into a well, eyes go crossed... Gets kicked by a mule, they go back straight again. I dunno."

 

[datagnostic]

Does this server has NIC teaming configured, or LACP?

Also, since you can 't find any physical hardware carrying that MAC address, have you considered it being virtual? I have recently had an issue with LLDP (which I have seen mentioned in your wireshark captures) on Siemens hardware where it carried the same mac address on different devices.

Also, since you think it has been resolved by changing ports, can you post the different configs of the ports for us to compare? What brand of switch is this anway?

By the way, the simplest way to troubleshoot duplicate IP's is to use PING and to inspect your ARP cache with the ARP -A command