GS748T Software User Manual
4-20 Configuring the Switch
v2.0, April 2007
If your switch is set up with Port-based VLANS, in the windows provided, enter the Port and
MAC Address in conventional six hexadecimal pair and colon separator format.
If your switch is set up wit 802.1Q VLANs, enter: Port, VLAN ID, and MAC Address in
conventional six hexadecimal pair and colon separator format.
4. Click Apply to save your settings.
To Remove a MAC Address from the Table
1. From the main Navigation Pane menu, select:
Switch → Advanced → Trus t MAC ; the Trusted MAC Settings page is displayed.
2. Check the Delete box for the MAC address that you want to remove.
3. Click on the Delete button.
Using IGMP Snooping to Route Packets Based on Content
IGMP Snooping enables your switch to examine IGMP packets and forward them in ways based
on their content. IGMP specifies how a host can register a router to receive specific multicast traf-
fic. Configure the switch to use IGMP snooping in subnets that receive IGMP queries from either
IGMP or the IGMP snooping querier. IGMP snooping constrains multicast traffic at Layer 2 by
configuring Layer 2 LAN ports dynamically to forward multicast traffic only to those ports that
want to receive it. The IGMP Snooping Function allows Snooping to be enabled or disabled on a
per-switch basis. It is disabled by default.
To enable or disable IGMP snooping:
1. From the main Navigation Pane menu, select: Switch → Multicast→ IGMP Snooping. The
IGMP Snooping Setting page is displayed.
2. Select Enable or Disable.
3. Click Apply to save your settings.
Filtering Unknown Multicast Packets
You can enable or disable the blocking of unknown multicast packets that enter the switch.
To enable or disable blocking of unknown multicast addresses:
1. From the main Navigation Pane menu, select:
Switch → Multicast→ Unknown Multicast; the Unknown Multicast Setting page is
displayed.