We are constantly having DHCP problems on our network. The problem is not with the network tranports, it's with the system admins who maintains the DHCP server (scopes). Is there a way that I can stimulate a DHCP relay on a network to a remote dhcp server using an ip helper address?
I would then enable dhcp debugging to view the transaction. The debugging is simple, but I need to figure a way to test dhcp relay. Any solution would be appreciated so that I can tell the sysadmin its not the network, but the server.
Cisco IOS support dhcp relay agent.
You can configure ip helper-address on an interface or vlan.
Please find below Cisco Documentation that might help you.
Yes you can, and then the dhcp packet ( originating from the dhcp client) will be forwarded as unicast by the relay with a new define "giaddr ip" which is usually set to the svi interface on where you have applied this relay,
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if you want a different router to act as a DHCP client you can use
ip address dhcp
in interface config mode
But it has to be a different router /router interface then the one performing DHCP relay function
Hope to help
You could look into configuring a IP SLA on the ciao for DHCP this will not solve the problem but it give you a better look at the process from the routers perspective and provide better logging from the network perspective.
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