Multiple VLANs in the same subnet

Posted by A.J. on Server Fault See other posts from Server Fault or by A.J.
Published on 2013-06-29T21:16:53Z Indexed on 2013/06/29 22:22 UTC
Read the original article Hit count: 285

Filed under:

vmware-esxi

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virtual-machines

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vlan

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subnet

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tmg

Is it possible to have multiple VLANs in the same subnet, with the same gateway address (TMG)?

I want to avoid having many Subnets (and vNIC's in TMG) just to isolate sets of a few hosts.

IP: 10.0.0.1         (TMG server)       VLAN:1 ~ 3

IP: 10.0.0.11 ~ 20   (Hosts group 1)    VLAN:1

IP: 10.0.0.21 ~ 30   (Hosts group 2)    VLAN:2

IP: 10.0.0.31 ~ 40   (Hosts group 3)    VLAN:3

Note that I don't want them to connect to each other, so ARP/inter-vlan routing (within the subnet) is not required.

The gateway is running in a VM within ESXi 5, I can pass the VLans to the VM using VGT or VLan Range, but I don't know how the OS/TMG should handle them.

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