DHCP Server Ranges
Hi Experts,
we rebuild our datacenter and we have new ranged for the server LAN.
My question is, is it possible with DHCP server to give IP ranges when the server is in another network then the clients ?
My DHCP server : 10.100.1.0 /21
Clients : 10.3.4.0 /21
Can the DHCP server serve different addresses when he is in another subnet ?
we rebuild our datacenter and we have new ranged for the server LAN.
My question is, is it possible with DHCP server to give IP ranges when the server is in another network then the clients ?
My DHCP server : 10.100.1.0 /21
Clients : 10.3.4.0 /21
Can the DHCP server serve different addresses when he is in another subnet ?
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ASKER
Hi,
I tried this with the IP HELPER-ADDRESS but didn´t work.
Here is my setup.
I have a FORTIGATE and a HP Switch 4208 connected.
On one interface I have my SERVER LAN on the othe interface I have my clients.
Where I have to configure the IP HELPER-ADDRESS DHCP-SERVER ?
I did it on the HP switch but no success.
I hope you can help me out.
I tried this with the IP HELPER-ADDRESS but didn´t work.
Here is my setup.
I have a FORTIGATE and a HP Switch 4208 connected.
On one interface I have my SERVER LAN on the othe interface I have my clients.
Where I have to configure the IP HELPER-ADDRESS DHCP-SERVER ?
I did it on the HP switch but no success.
I hope you can help me out.
So is all of the traffic between those two LAN's occurring at the fortigate level?
It will only work on the switch level if it is layer 3 and is routing the traffic between the VLAN's.
If it is routing at the Fortigate level then you will need to setup a DHCP relay.
*Routers tend to do DHCP relay and switches do IP helper, they are essentially the same it is just how they manage the relay of the request packet/broadcasts.
It will only work on the switch level if it is layer 3 and is routing the traffic between the VLAN's.
If it is routing at the Fortigate level then you will need to setup a DHCP relay.
*Routers tend to do DHCP relay and switches do IP helper, they are essentially the same it is just how they manage the relay of the request packet/broadcasts.
ASKER
Hi,
yes the FORTIGATE is routing to other networks.
On the FGT I have setup the interface with DHCP RELAY.
Do I have to do this on both interfaces, where the dhcp-server belongs to and the on the interface where are the clients ?
yes the FORTIGATE is routing to other networks.
On the FGT I have setup the interface with DHCP RELAY.
Do I have to do this on both interfaces, where the dhcp-server belongs to and the on the interface where are the clients ?
Its a bit of a vendor specific question, and I don't have a massive amount of Fortigate knowledge.
Addressing the basics though, can the clients and and server LAN's connect to each other, as in ping successfully?
Addressing the basics though, can the clients and and server LAN's connect to each other, as in ping successfully?
ASKER
ping is working between client and server
ASKER
lets say the networks are devides by my FORTIGATE.
On Port13 I have my Server-Lan with my DHCP Server.
On Port 2 I have my Client LAN with DHCP Clients.
As I have read, do I have to create the DHCP RELAY Agent on the client subnet, where no DHCP Server is installed ?
Do I have to use the DHCP RELAY Agent Function from the FORTIGATE on Port 2 ?
Do I have to add the IP HELPER ADDRESS on my switches too ?
On Port13 I have my Server-Lan with my DHCP Server.
On Port 2 I have my Client LAN with DHCP Clients.
As I have read, do I have to create the DHCP RELAY Agent on the client subnet, where no DHCP Server is installed ?
Do I have to use the DHCP RELAY Agent Function from the FORTIGATE on Port 2 ?
Do I have to add the IP HELPER ADDRESS on my switches too ?
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ASKER
when I enable dhcp relay do on my fortigate interface then it works
ASKER
Thanks to all.
To do this you would create the two subnet scopes as required (your DHCP server residing on the servers scope).
In order for your clients subnet to get an IP address from the DHCP server you would need to configure an IP helper address on the router or layer 3 switch you have in operation on your network. The IP helper address being the IP of your DHCP server.
Depending your current networking equipment you may or may not have this feature, so post back if not.