LevelOne GSW-2600TXM manual 135

To add a new VLAN, enter a new VLAN number in the VID field, select the port members, and press Add. To modify a VLAN, click on the edit icon () for the required entry, modify the port settings, and press Save. To delete a VLAN, click on the edit icon () for the required entry, and then press Delete.

3.6.5.Configuring IGMP Snooping

Multicasting is used to support real-time applications such as video conferencing or streaming audio. A multicast server does not have to establish a separate connection with each client. It merely broadcasts its service to the network, and any hosts which want to receive the multicast register with their local multicast switch / router. Although this approach reduces the network overhead required by a multicast server, the broadcast traffic must be carefully filtered at every multicast switch / router it passes through to ensure that traffic is passed on only to the hosts which subscribed to this service.

This switch uses IGMP (Internet Group Management Protocol) Snooping to monitor for any attached hosts who want to receive a specific multicast service. It looks up the IP Multicast Group used for this service, and adds any port which received a similar request to that group.

You can use the IGMP Snooping Configuration screen to configure multicast filtering as shown below.

Parameter	Default	Description
IGMP	Disabled	If enabled, the switch will monitor network traffic to determine
Snooping		which hosts want to receive multicast traffic. This is also
Status¹		referred to as IGMP Snooping.
IGMP Router	5	A switch port that stops receiving multicast protocol packets for
Timeout		this interval will be removed from the IGMP forwarding list.
		Range: 3 - 5 minutes
IGMP Group	5	The time between spotting an IGMP Report message for an IP
Timeout		multicast address on a specific port before the switch removes
		that entry from its list.
		Range: 3 - 5 minutes

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