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New Member

DHCP relay through MPLS

Hello,

i want to know how to configure a firewall to allow dhcp relay request from my WAN network to a Internal DMZ ? TCP/UDP ports ??

My other question is for DHCP relay request the dhcp router asks ip addresses with his own ip address, what the behavior of the dhcp server if there are two ip address on the interface on the router with cisco ip secondary.

Maybe, i don't use the good forum ??

Thanks

3 REPLIES
New Member

Re: DHCP relay through MPLS

Allow UDP port 67 through to the DHCP server.

New Member

Re: DHCP relay through MPLS

thank you, for the other question have you got some ideas ?

i want to distribute ip addresses for the secondary ip address of my router which is also configured using ip helper to a windows dhcp server and i want to know if the router has 2 ip addresses how does the server know which scope he has to use ?

thanks

New Member

Re: DHCP relay through MPLS

You may be looking for the " ip dhcp smart-relay" command. Below is a link. Where you will run into problems is if you want to have dhcp clients on both ranges.

http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a00804412bf.html#wp1090022

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