dhcp proxy vs relay

Kashish_Patel — Mon, 11 Mar 2019 23:20:17 GMT

What is the difference between dhcp relay and dhcp proxy with respect to ASAs?

Thanks,

Kashish

dhcp proxy vs relay

Ramraj Sivagnanam Sivajanam — Mon, 16 Jul 2012 10:19:42 GMT

Hi Bro

DHCP relay listens to local broadcast messages from PC, and forwards these messages on another network towards the DHCP server. The DHCP server responds, and the replies is then forwarded back to the PC.

DHCP proxy is a fully-functional DHCP server and client built inside. The PC establishes IP leases from the DHCP server on one interface, and then keeps these addresses in a pool. On another interface, the server side of the implementation provides leases to other machines using that pool.

Cisco PIX/ASA Firewalls supports both method. In many of my previous implementations, the FW interface on which it behaves as a DHCP server has a dedicated, manually-configured address pool, and the only thing the proxy feature does is get configuration parameters from another upstream server e.g. equipment configuration, as shown below;

Router(config)#boot ?
bootstrap Bootstrap image file
config     Configuration file
host       Router-specific config file
network    Network-wide config file
system     System image file

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topic dhcp proxy vs relay in Network Security

dhcp proxy vs relay

dhcp proxy vs relay