Igmp Snooping Screen - ZyXEL Communications NBG4615 User Manual

Chapter 17 WAN
Figure 101 Network > WAN > Advanced
The following table describes the labels in this screen.
Table 63 Network > WAN > Advanced
LABEL
Multicast Setup
Multicast
Auto-Subnet Configuration
None
Enable Auto-bridge
mode
Enable Auto-IP-
Change mode
Apply
Cancel

17.6 IGMP Snooping Screen

Use this screen to enable IGMP snooping if you have LAN users that subscribe to multicast services.
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.
Click Network > WAN > IGMP Snooping. The screen appears as shown.
160
DESCRIPTION
Select IGMPv1/v2 to enable multicasting. This applies to traffic routed
from the WAN to the LAN.
Select None to disable this feature. This may cause incoming traffic to be
dropped or sent to all connected network devices.
Select this option to have the NBG4615 do nothing when it gets a WAN IP
address in the range of 192.168.x.y (where x and y are from zero to nine)
or in the same subnet as the LAN IP address.
Select this option to have the NBG4615 switch to bridge mode automatically
when the NBG4615 gets a WAN IP address in the range of 192.168.x.y
(where x and y are from zero to nine) no matter what the LAN IP address is.
Select this option to have the NBG4615 change its LAN IP address to
10.0.0.1 or 192.168.1.1 accordingly when the NBG4615 gets a dynamic
WAN IP address in the same subnet as the LAN IP address 192.168.1.1 or
10.0.0.1.
The NAT, DHCP server and firewall functions on the NBG4615 are still
available in this mode.
Click Apply to save your changes back to the NBG4615.
Click Cancel to begin configuring this screen afresh.
NBG4615 User's Guide