how do we configure router/L3 switch as dhcp relay agent

Answered Question
Jan 30th, 2009

HI every body!

how do we configure router or L3 switch to behave as dhcp relay agent?

thanks a lot!

I have this problem too.
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Correct Answer by fsebera about 7 years 10 months ago

The term Relay Agent usually implies IPv6.

Before we jump into IPv6 details, could you confirm IPv4 or IPv6.

Correct Answer by mahmoodmkl about 7 years 10 months ago

Hi

When u configure ip helper-address (dhcp server ip) under the specific SVI its going to act as relay agent..do mean this or u want the router or the switch to be act as a dhcp server.

Thanks

Mahmood

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Correct Answer
mahmoodmkl Fri, 01/30/2009 - 11:38

Hi

When u configure ip helper-address (dhcp server ip) under the specific SVI its going to act as relay agent..do mean this or u want the router or the switch to be act as a dhcp server.

Thanks

Mahmood

ibrunello Fri, 01/30/2009 - 11:57

please note that when setting the dhcp relay, dhcp request are tagged with the SVI ip network/subnet, so you have to set an according configuration (i.e. dhcp scope) on the server.

e.g. if svi receiving and forwarding the dhcp request has ip address 192.168.1.1/24, you must set a dhcp scope for network 192.168.1.0/24 on the server.

Correct Answer
fsebera Fri, 01/30/2009 - 12:03

The term Relay Agent usually implies IPv6.

Before we jump into IPv6 details, could you confirm IPv4 or IPv6.

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