Dhcp, relay and option 82

Hi all,

I am going deeper in my dhcp understanding and have one question
?is it possible for a router relay agent to keep the information option 82
but set the giaddr field?

If I have understood well the information option, when one dhcp snoop and
option 82 enabled switch is connected to a dhcp relay router, the giaddr
field is set to 0s by the witch. If the relay trust the information option,
the giaddr field keep to 0. In this case the dhcp server always has to
derive the client IP from the 82 option, am I right? It is a little bit
confusing;)

Regards

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Received on Fri Jul 16 2010 - 10:54:50 ART