The addresses are subnet dependent. That's why you create a different scope
of the DHCP server to handle clients from subnet A and subnet B.
When a host in subnet B asks for an IP address, the DHCP Relay Agent will
send the request to the DHCP server in subnet A telling it that it requires
an IP address for a host in subnet B. The DHCP server will then grab an
address from the subnet B scope.
When a host in subnet A asks for an IP address, it can contact the DHCP
server directly and therefore the DHCP server knows it should dish out an
address from the subnet A scope.
Derek CHUNG <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Having a DHCP agent will allow distribution of DHCP address across
different
> subnet. But then isn't the address supposed to be subnet dependent? If you
> have a DHCP server sitting in Subnet A releasing IPs for Subnet B and an
> agent sitting in Subnet B helping the distribution. Hosts in B will get
> correct IP for its subnet. However a DHCP host in A will not. But then
there
> is NO WAY to stop (unless users are not users) hosts in A trying to get a
> DHCP IP. That is the negative side of using DHCP agent? Or am I mistaken
the
> concept?
>
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