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10-08-2013 07:31 AM
10-08-2013 07:31 AM
Server 2012 Nic Team HP 2920 problem
Hi!
I have a hyper-v 2012 cluster with two hosts. Every host has 4 nic ports. On each host the 4 nics are in a switch independent network team (Team Server A and Team Server B). On top of each team is a vSwitch with the cluster, management and livemigration network.
The physical network configuration is as follows. There are 3 switches (A, B and C).
Switch A = HP 2920-24G
Switch B = HP 2920-24G
Switch C = Netgear
Ports 1 and 2 of Team Server A are connected to ports 1 and 2 of Switch A
Ports 3 and 4 of Team Server A are connected to ports 1 and 2 of Switch B
Ports 1 and 2 of Team Server B are connected to ports 3 and 4 of Switch A
Ports 3 and 4 of Team Server A are connected to ports 3 and 4 of Switch B
The crossover cabling is for fault tolerance if Switch A or Switch B dies.
Port 24 and 23 on Switch A and Switch B are trunked uplinks to Switch C which is the production network.
Spanning Tree is active on all switches
If I connect the network teams in the crossover configuration the whole network goes down. Not even a ping to any PC or Server is possible. If all ports of the network teams are attached to one switch (A or B) everything is ok.
A guy on Microsoft Tech Net verified my Hyper-V configuration and said, that it must have something to do with the switches. He mentioned "switchport nonegotiate".
Is there anything wrong with my cabling or do I have to configure something on the switches to get the fault tolerant network team working?
Hope anybody can help!
Thank's in advance
Madmax
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10-08-2013 04:21 PM
10-08-2013 04:21 PM
Re: Server 2012 Nic Team HP 2920 problem
I don't see any obvious reason why connecting it all up the way you plan should bring the whole network down.
A couple of things:
1/ Have you reduced the spanning tree priority of Switch C to 0 (or something lower than the default 32k)?
2/ Have you got the trunks from Switch C up to A & B each configured as a working LACP trunk?
3/ Have you got the trunks from each switch (A & B) to each Host configured as working LACP trunks?