ZyXEL Communications GS1900-10HP - CHAPTER 26 Configuration: Multicast; 26.2 IGMP; 26.2.1 The Global Screen

GS1900 Series User’s Guide
161
C HAPTER 26
C o nfig ura tio n: Multic a st
26.1 O ve rvie w
This section provides information for Multic a st in C o nfig ura tio n.
Traditionally, IP packets are transmitted in one of either two ways – Unicast (1 sender to 1 recipient) or
Broadcast (1 sender to everybody on the network). Multicast delivers IP packets to just a group of hosts
on the network.
26.2 IG MP
IGMP (Internet Group Management Protocol) is a network-layer protocol used to establish membership
in an IPv4 multicast group – it is not used to carry user data. Refer to RFC 1112, RFC 2236 and RFC 3376 for
information on IGMP versions 1, 2 and 3 respectively.
26.2.1 The G lo ba l Sc re e n
Use this screen to view the IGMP G loba l settings. Click C o nfig ura tio n > Multic a st > IG MP > G lo ba l to open
this screen.
Fig ure 160 Configuration > Multicast > IGMP > Global
The following table describes the labels in this screen.
Table 107 Configuration > Multicast > IGMP > Global
LABEL DESCRIPTIO N
Global
Snooping State Select Ena ble to turn on IGMP packet snooping or Disa ble to turn snooping off.
Snooping
Version
Select v2 or v3 depending on the snooping version you require.