NetComm IP DSLAM NCT480 - Manual (Page 85)

YML856 Rev3 NCT480 IP DSLAM User Guide NCT480 IP DSLAM User Guide
www.netcomm.com.au 85
DhCP & PPPoe Relay
The DHCP Relay configuration provides DHCP Relay Option 82 function.
DHCP allows individual computers on an IP network to extract their configurations from DHCP server. The
overall purpose of this is to reduce the work necessary to administer a large IP network. The most significant
piece of information distributed in this manner is the IP address. Information can be added into client TCP/IP
configuration requests that IP-DSLAM relays to a DHCP server. This helps provide authentication about the
source of the request. Please refer to RFC 3046 for further details.
The PPPoE Relay feature enables an L2TP access concentrator (LAC) to relay active discovery and service
selection functionality for PPP over Ethernet (PPPoE), over a Layer 2 Tunneling Protocol (L2TP) control
channel, to an L2TP network server (LNS) or tunnel switch (multihop node). The relay functionality of this
feature allows the LNS or tunnel switch to advertise the services it offers to the client, thereby providing end-
to-end control of services between the LNS and a PPPoE client.
The PPPoE Relay feature enables an L2TP access concentrator (LAC) to relay active discovery and service
selection functionality for PPP over Ethernet (PPPoE), over a Layer 2 Tunneling Protocol (L2TP) control
channel, to an L2TP network server (LNS) or tunnel switch (multihop node). The relay functionality of this
feature allows the LNS or tunnel switch to advertise the services it offers to the client, thereby providing end-
to-end control of services between the LNS and a PPPoE client.