Multiple Subnets over one NIC with BladeCenter?

[kegwell]

We have an IBM BladeCenter H chassis with Cisco 3012 switches. Each blade server is configured with a total of 4 NIC ports. Our original intention was to team 2 of the 4 NICs for VM traffic and the remaining two for management/vmotion/fault tolerance. It has recently been brought to my attention that there is another subnet required for some of the VMs that will be running on these servers. So, my question is, can I access mutliple networks (10.1.1.x & 192.168.0.x) through the two bonded NICs mentioned above for VMware traffic? Keep in mind this is bladecenter environenment, so I will have the external ports on the back of the chassis for physical connectivity. Any documentation showing this would be icing on the cake. Thanks in advance.

[mjsvirt · Accepted solution]

You should be able to to this with trunking and vlan tagging. This will allow you to pass traffic from multiple vlans and tag it.

Jason Silva

http://silvaecs.com

[kegwell]

Thanks for the prompt reply. To confirm your answer, our virtual network configuration would look like this:

vSwitch 0 - NIC 1 & 2 (teamed)

• Service console/management

• Vmotion

• Fault Tolerance

vSwitch 1 - NIC 3 & 4 (teamed)

• network 10.1.1.x on VLAN A

• network 192.168.0.x on VLAN B

[mjsvirt]

That looks good.

Also for your config, you will need trunking enabled on the switch ports and also the necessary configuration in your virtual switch to vlan tag.

This post may also help:

Jason Silva