ZyXEL Communications ES-2008 Switch User Manual


 
Dimension ES-2008 Ethernet Switch
Filter and Security Setup 8-3
Figure 8-2 IGMP Example 1
Example 2: Select an IGMP Server Manually
To force Switch A to be the IGMP server, select Enable in the IGMP Query Mode field.
However if another multicast device is set to Auto and it has a numerically lower IP
address, it will act as the IGMP server also. This results in duplicated IGMP messages
that might decrease your network performance.
Unless you can disable IGMP on the other multicast devices on your network, it is not
recommended you select the Enable option.