ZyXEL P-870MH-C1 User Guide - Page 104
What You Need To Know, IP Address, Subnet Mask, DHCP Relay, Multicast and IGMP
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Chapter 6 LAN Setup 6.2 What You Need To Know IP Address Similar to the way houses on a street share a common street name, so too do computers on a LAN share one common network number. This is known as an Internet Protocol address. Subnet Mask The subnet mask specifies the network number portion of an IP address. Your Device will compute the subnet mask automatically based on the IP address that you entered. You don't need to change the subnet mask computed by the Device unless you are instructed to do otherwise. DHCP DHCP (Dynamic Host Configuration Protocol) allows clients to obtain TCP/IP configuration at start-up from a server. This Device has a built-in DHCP server capability that assigns IP addresses and DNS servers to systems that support DHCP client capability. DHCP Relay You can also configure the Device to relay client DHCP requests to a DHCP server and the server's responses back to the clients. RIP RIP (Routing Information Protocol) allows a router to exchange routing information with other routers. Multicast and IGMP Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1 recipient) or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to a group of hosts on the network - not everybody and not just 1. IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership in a Multicast group - it is not used to carry user data. There are two versions 1 and 2. IGMP version 2 is an improvement over version 1 but IGMP version 1 is still in wide use. 104 P-870HN-5xb User's Guide