NETGEAR GS324T User Manual

S350 Series 24-Port (PoE+) and 48-Port Gigabit Ethernet Smart Managed Pro Switches
Configure Switching User Manual162
The Auto-Video Configuration page displays.
6. Select one of the following radio buttons:
• Select the Disable radio button to globally disable Auto-V
ideo administrative mode for
the switch.
• Select the Enable radio button to globally enable Auto-V
ideo administrative mode for
the switch.
7. Click the Apply button.
Your settings are saved.
The Auto-Video VLAN field displays the Auto-Video VLAN ID that is configured on the
switch. By default, this VLAN ID is 4089.
About IGMP Snooping
Internet Group Management Protocol (IGMP) snooping is a feature that allows a switch to
forward multicast traffic intelligently. Multicast IPv4 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 traf
fic. This prevents the switch from broadcasting
the traffic to all ports and possibly affecting network performance.
A traditional Ethernet network can be separated into different network segments to prevent
placing too many devices onto the same shared media. Bridges and switches connect these
segments. When a packet with a broadcast or multicast destination address is received, the
switch forwards a copy to each of the remaining network segments in accordance with the
IEEE MAC Bridge standard. Eventually
, the packet is made accessible to all nodes
connected to the network.
This approach works well for broadcast packets that are intended to be detected or
processed by all connected nodes. For multicast packets, this approach could lead to a less
efficient use of the network bandwidth, particularly when the packets are intended for a small
number of nodes only
. Packets are flooded into network segments where no node is
receptive to the packet. Although nodes rarely incur any processing overhead to filter packets
addressed to unrequested group addresses, the nodes cannot transmit new packets onto the
shared media while the multicast packets are being flooded. Such as waste of bandwidth is
even worse when the LAN segment is not shared, for example in full-duplex links.
Allowing switches to snoop IGMP packets can solve this problem. While the IGMP packets
are being forwarded throughout the network, the switch uses the information in the packets to
determine which segments must receive packets that are directed to the group address.

NETGEAR GS324T Specifications

General

Switch type	Managed
Switch layer	L2/L3/L4
ARP inspection	Yes
Master (outer) case width	270 mm
Master (outer) case height	271 mm
Master (outer) case length	481 mm
Master (outer) case weight	8850 g
Harmonized System (HS) code	85176990
Quantity per master (outer) case	3 pc(s)
Package type	Box
Package depth	465 mm
Package width	229 mm
Package height	79 mm
Package weight	2710 g
Cables included	AC
Stackable	-
Product color	Black
Input current	5 A
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (max)	13.5 W
Operating temperature (T-T)	0 - 40 °C
MAC address table	16000 entries
Power connector	AC-in jack
SFP module slots quantity	2
Installed SFP modules quantity	0
Basic switching RJ-45 Ethernet ports type	Gigabit Ethernet (10/100/1000)
Basic switching RJ-45 Ethernet ports quantity	24
Number of VLANs	256
Networking standards	IEEE 802.1D, IEEE 802.1Q, IEEE 802.1ab, IEEE 802.1p, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3az, IEEE 802.3x
Virtual LAN features	Private VLAN, Voice VLAN, Port-based VLAN
DHCP features	DHCP client

Weight and Dimensions

Depth	169 mm
Width	328 mm
Height	43 mm
Weight	1620 g