ZyXEL ZyWALL 5 User Guide - Page 151
Address Allocation for Private Internets, Guidelines for Management of IP Address Space.
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Chapter 7 LAN Screens " Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines above. For more information on address assignment, please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466, Guidelines for Management of IP Address Space. MAC Address Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02. DHCP The ZyWALL can use DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) to automatically assign IP addresses subnet masks, gateways, and some network information like the IP addresses of DNS servers to the computers on your LAN. You can alternatively have the ZyWALL relay DHCP information from another DHCP server. If you disable the ZyWALL's DHCP service, you must have another DHCP server on your LAN, or else the computers must be manually configured. IP Pool Setup The ZyWALL is pre-configured with a pool of IP addresses for the computers on your LAN. See Table 269 on page 770 for the default IP pool range. Do not assign your LAN computers static IP addresses that are in the DHCP pool. RIP Setup RIP (Routing Information Protocol, RFC 1058 and RFC 1389) allows a router to exchange routing information with other routers. RIP Direction controls the sending and receiving of RIP packets. When set to Both or Out Only, the ZyWALL will broadcast its routing table periodically. When set to Both or In Only, it will incorporate the RIP information that it receives; when set to None, it will not send any RIP packets and will ignore any RIP packets received. RIP Version controls the format and the broadcasting method of the RIP packets that the ZyWALL sends (it recognizes both formats when receiving). RIP-1 is universally supported; but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology. Both RIP-2B and RIP-2M send routing data in RIP-2 format; the difference being that RIP2B uses subnet broadcasting while RIP-2M uses multicasting. Multicasting can reduce the load on non-router machines since they generally do not listen to the RIP multicast address and so will not receive the RIP packets. However, if one router uses multicasting, then all routers on your network must use multicasting, also. By default, RIP Direction is set to Both and RIP Version to RIP-1. ZyWALL 5/35/70 Series User's Guide 151