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VLANs networks receiving IPs from DHCP by a Windows Server running on ESXI 5.5

I would like to know the best practice to distribuite IPs by windows server DHCP for a multiple VLAN environment using Vmware ESXI 5.5?

The switch interface that is connected to the ESXI server is in trunk mode.

I made a home lab to test this and worked, but I don´t think that this is the "correct" way. This is what I did:

Environment:
- Lan with vlan 10 (192.168.10.0)
- Lan with vlan 20 (192.168.20.0)
- Lan with vlan 30 (192.168.30.0)

With a virtualized windows server in ESXi I installed 3 network cards in windows, and installed DHCP server with 3 scopes.
- nic 1 = 192.168.10.1 (assigned with VM NETWORK VLAN 10)
- nic 2 = 192.168.20.1 (assigned with VM NETWORK VLAN 20)
- nic 3 = 192.168.30.1 (assigned with VM NETWORK VLAN 30)

Thanks!

David Akinsanya

If you meant standard practice, then yes

In other to pass multiple vlans through a switched connection, the switchport must be in trunk mode.

Also noteworthy is the fact that configuration decisions are based on preference.
That's why it is important to have a goal, then meet it.

As such, there is no correct or incorrect way if the design is working.

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Bryant Schaper

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edu87

ASKER

I did the setup on my Cisco SG300 by enabling the DHCP Server Relay and pointing to my Windows Server DHCP and worked perfectly.

I dont´t know if is just the switch SG300 Cisco, but I did not need to enable IP HELPER feature. Just made the settings of DHCP Server Relay following this tutorial and now is working ok:

http://sbkb.cisco.com/CiscoSB/GetArticle.aspx?docid=d8d34abcd43d445f95073301cae9fbd2_DHCP_Relay_Configuration_on_Cisco_300_Managed_Switch.xml&pid=2&converted=0

David Akinsanya

IP-Helper Address (Cisco command) = DHCP relay

I would like to know the best practice to distribuite IPs by windows server DHCP for a multiple VLAN environment using Vmware ESXI 5.5?

= Trunking

Bryant Schaper

That works too, I think you would have to use the ip helper-address if your were crossing a router edge

edu87

ASKER

Akinsd,

I think SG300 is a little bit different:

But there is one option for Ip Helper, and I didn´t understand why I don´t needed to set it:

Bryant Schaper

the commands are similar but not the same. DHCP relay handles DHCP, ip helper handles broadcast, which DHCP is, so you could send other broadcast traffic across as well like, dns, tftp and netbios.

edu87

ASKER

I tryed to set the IP helper with port 67, and a message says that DHCP is already reserved. So I assume that in this case I must use the DHCP Relay.