Manage Multicast Traffic With Igmp Snooping - NETGEAR GS110 User Manual

8-Port Gigabit Ethernet Smart Managed Plus Switch Model GS110EMX
To manage NSDP:
1. Connect your computer to the same network as the switch.
You can use a WiFi or wired network connection, or connect directly to a switch that
is off-network using an Ethernet cable.
2. Launch a web browser.
3. In the address field of your web browser, enter the IP address of the switch.
The login page displays.
4. Enter the switch password.
The default password is password. The password is case-sensitive.
The Switch Information page displays.
5. Select System > Management > Discovery and Management.
The Discovery and Management page displays.
6. In the NSDP section, select one of the following radio buttons:
• Disable. NSDP is disabled.
• Enable. NSDP is enabled. This is the default setting.
7. Click the Apply button.
Your settings are saved.
Manage Multicast Traffic With IGMP
Snooping
Internet Group Management Protocol (IGMP) snooping allows a switch to forward multicast traffic
intelligently on the switch. Multicast IP traffic is traffic that is destined to a host group. Host groups
are identified by class D IP addresses, which range from 224.0.0.0 to 239.255.255.255. Based on
the IGMP query and report messages, the switch forwards traffic only to the ports that request the
multicast traffic. This feature prevents the switch from broadcasting the traffic to all ports and possibly
affecting network performance.
The switch maintains a map that shows which links need which IP multicast streams. The switch
forwards multicast traffic only to the links that requested them and cuts multicast traffic from links
that do not contain a multicast listener. Essentially, IGMP snooping helps optimize multicast
performance at Layer 2 and is especially useful for bandwidth-intensive IP multicast applications
such as IPTV.
Manage Network Settings 53 User Manual