(PM) dhcp?

Rich Adamson (adar0@routers.com)
Fri, 14 Nov 1997 05:30:34 -0600

>We have a customer who uses DHCP to assign IP
>addresses to the LAN. Now that they have PM3 for
>RAS, they of course want to use the same IP pool
>instead of setting up another pool for them.

>Why wouldn't DHCP work?? I think it's pretty well
>tested and used service... Another thing is if PM3
>supports it, and that's what I'd like to know.

dhcp will work for your customer and is very reliable in a
lan environment. The problem your customer will incur is
that dhcp was derived as a more modern way of handling the
old bootp functions, and uses "broadcasts" from the client
workstation to find/reach the dhcp server. Therefore the
equipment between the client workstation and the dhcp server
must pass dhcp/bootp broadcasts at the MAC layer. Bay and
Cisco routers have very specific configuration parameters
that can be used to pass either/both bootp and dhcp
broadcasts through wan equipment and links for this very
purpose. Don't know if the pm3 can be configured with the
same broadcast-forwarding functionality, but if it can, no
problem.
If you are going to try various filtering mechanisms to test
this, be careful to only forward broadcast packets that are
bootp/dhcp packets and not all other broadcast types.
Rich

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