ZyXEL NBG6515 User Guide - Page 103
Internet Connection
View all ZyXEL NBG6515 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 103 highlights
Chapter 13 WAN 13.3.2 Multicast 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. Figure 78 Multicast Example Router In the multicast example above, systems A and D comprise one multicast group. In multicasting, the server only needs to send one data stream and this is delivered to systems A and D. 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. The NBG supports both IGMP version 1 (IGMP-v1) and IGMP version 2 (IGMP-v2). At start up, the NBG queries all directly connected networks to gather group membership. After that, the NBG periodically updates this information. IP multicasting can be enabled/disabled on the NBG LAN and/or WAN interfaces in the Web Configurator (LAN; WAN). Select None to disable IP multicasting on these interfaces. 13.4 Internet Connection Use this screen to change your NBG's Internet access settings. Click WAN from the Configuration menu. The screen differs according to the encapsulation you choose. 13.4.1 Ethernet Encapsulation This screen displays when you select Ethernet encapsulation. NBG6515 User's Guide 103