ZyXEL Communications Prestige 642 User Manual page 105

Prestige 642 ADSL Internet Access Router
IP Multicast
Traditionally, IP packets are transmitted in two ways - unicast or broadcast. Multicast is a third way to
deliver IP packets to a group of hosts. IGMP (Internet Group Management Protocol) is the protocol used to
support multicast groups. The latest version is version 2 (see RFC2236). Both versions 1 and 2 are
supported by the Prestige
IP Policy Routing (IPPR)
Traditionally, routing is based on the destination address only and the router takes the shortest path to
forward a packet. IP Policy Routing (IPPR) provides a mechanism to override the default routing behavior
and alter the packet forwarding based on the policy defined by the network administrator.
10/100M Fast Ethernet LAN Interface
The P642's 10/100M auto-negotiating LAN interface enables fast data transfer of either 10Mbps or
100Mbps in either half-duplex or full-duplex mode depending on your Ethernet network.
Protocols Supported
TCP/IP (Transmission Control Protocol/Internet Protocol) network layer protocol.
PPP (Point-to-Point Protocol) link layer protocol.
SUA™ (Single User Account) and NAT (Network Address Translation).
Multiple Protocol Support
♦ Novel IPX (Internetwork Packet eXchange) network layer protocol.
♦ Transparently bridging for unsupported network layer protocols.
DHCP Support
DHCP (Dynamic Host Configuration Protocol) allows the individual clients (computers) to obtain the
TCP/IP configuration at start-up from a centralized DHCP server. The Prestige has the built-in DHCP
Server enabled by default. DHCP Relay allows the Prestige to act as a surrogate DHCP server where it
relays IP address assignment from the actual DHCP server to its clients.
Multiple PVC Support
Your Prestige supports up to 8 Permanent Virtual Circuits.
Networking Compatibility
Your Prestige is compatible with the major ADSL DSLAM (Digital Subscriber Line Access Multiplexer)
providers, making configuration as simple as possible for you.
Multiplexing
The Prestige 642 supports VC-based and LLC-based multiplexing.
Encapsulation
The Prestige 642 supports PPP (RFC 2364 - PPP over ATM Adaptation Layer 5), RFC 1483 encapsulation
over ATM, MAC encapsulated routing as well as PPP over Ethernet (RFC 2516).
1-2 Getting to know your Prestige