DHCP proxy and DHCP relay - TCP-IP

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Thread: DHCP proxy and DHCP relay

  1. DHCP proxy and DHCP relay

    What is difference between dhcp proxy and dhcp relay?
    TIA,
    st

  2. Re: DHCP proxy and DHCP relay

    aaabbb16@hotmail.com writes:
    > What is difference between dhcp proxy and dhcp relay?


    A relay (defined in the RFCs) listens to local broadcast (or
    link-local multicast for DHCPv6) messages from clients, and forwards
    these messages on another network towards a DHCP server. The server
    responds, and the relay either keeps enough state or has added data to
    the request such that it can forward the replies back to the client.

    A proxy is a different beast. It doesn't just forward messages around
    with some small alterations. Instead, it has a fully-functional DHCP
    server and client built inside. The client side establishes leases
    (likely with prefix delegations) from a 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.

    (There are many variations on that theme. Some implementations have
    no need of address leases, because the interface on which the system
    behaves as a DHCP server has a dedicated, manually-configured address
    pool, and the only thing the proxy does is get configuration
    parameters from another upstream server.)

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