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Home » Kerio User Forums » Kerio Control » DHCP RELAY (how i can tell client on VLAN to use my win 2012r2 dhcp server?)
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f.boldori1

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Hello,
i have this problem: on a remote site e need to implement VLAN (and here nothing new) but i need to use an existing win 2012 r2 dhcp server.
On our main site i have an Layer 3 switch for main switching and on that i can set ip helper address to help host on vlans to get the IP from the main dhcp server.

I didn't see an option like that in kerio. Any hint?
Thank you
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f.boldori1

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Maybe it's something that could be done with a custom firewall rule?
No one?
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merc

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Kerio control It not support IP helper. I do not understand why they do not.
I set the issues, with my switch it support the IP helper
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f.boldori1

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Yes i need to change my switch too... Why on earth they cannot provide a dhcp relay option? Come on...
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f.boldori1

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Ok i've bought an HP 2530 with vlan support and ip-helper-address
i dont know why but client on VLAN20 (the secondary LAN interface on kerio) cannot retrieve dhcp address from the server (DHCP scope is ok)

grr..
i've an exactly setup in another office (it's the same: i've copied VMs and ESXi configuration) with pfsense and it's working like a charme.

Any idea?
This is the configuration:
Kerio VM on esxi. 3 network interface: WAN:LAN1:LAN2
The 3 kerio interface have a dedicated vswitch connected to a single LAN PORT on the ESXi host.
The port goes into the switch, on port that have VLAN10 tagged, WAN_VLAN tagged and VLAN20 tagged.
On the switch then i have 1 port untagged for WAN_VLAN, 10 port untagged VLAN10, 10 port untagged VLAN20.

Into the switch cli i set ip helper address of the win 2012 dhcp server for the VLAN10 and VLAN20 sub configuration (that resides on VLAN10 as VM on the same virtual switch and port group).

Any hint??
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