NETGEAR GS748T User Manual

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GS748T Smart Switch
To configure IGMP Snooping interface settings:
1. To configure IGMP Snooping settings for a physical port, click PORTS.
2. To configure IGMP Snooping settings for a Link Aggregation Group (LAG), click LAGS.
3. To configure IGMP Snooping settings for both physical ports and LAGs, click ALL.
4. Select the check box next to the port or LAG to configure. You can select multiple ports and
LAGs to apply the same setting to the selected interfaces. Select the check box in the
heading row to apply the same settings to all interfaces.
5. Configure the IGMP Snooping values for the selected port(s) or LAG(s):
• Admin Mode. Use the menu to enable or disable the administrative mode of IGMP
snooping on the selected interface(s). The default is Disable.
• Host Timeout. Specify the amount of time you want the switch to wait for a report for
a particular group on a particular interface before it deletes that interface from the
group. Enter a value between 2 and 3600 seconds. The default is 260 seconds.
• Max Response Time. Specify the amount of time you want the switch to wait after
sending a query on an interface because it did not receive a report for a particular
group on that interface. Enter a value greater or equal to 1 and less than the Host
Timeout, in seconds. The default is 10 seconds.
• MRouter Timeout. Specify the amount of time you want the switch to wait to receive
a query on an interface before removing it from the list of interfaces with multicast
routers attached. Enter a value between 0 and 3600 seconds. The default is 0
seconds. A value of zero indicates an infinite timeout; no expiration.
• Fast Leave Admin Mode. Select the Fast Leave mode for a particular interface from
the menu. The default is Disable.
6. Click Cancel to cancel the configuration on the screen and reset the data on the screen to
the latest value of the switch.
7. If you make any configuration changes, click Apply to apply the new settings to the switch.
Configuration changes take effect immediately.

NETGEAR GS748T Specifications

General

Basic switching RJ-45 Ethernet ports quantity	48
MAC address table	16000 entries
Packet buffer memory	1.632 MB
Maximum data transfer rate	1 Gbit/s
Latency	20 µs
I/O ports	48 RJ-45 connectors for 10BASE-T, 100BASE-TX, and 1000BASE-T (Auto Uplink on all ports) 4 SFP slots for fiber Gigabit Ethernet modules
Dimensions (WxDxH)	440 x 260 x 43 mm
Power requirements	100-240VAC 50/60 Hz
Networking features	10BASE-T, 100BASE-TX, 1000BASE-T
Connectivity technology	Wired
Full duplex	Yes
Networking standards	IEEE 802.3x
Minimum system requirements	Category 5 network cables Network card for each PC Network software (e.g., Windows)
Mean time between failures (MTBF)	69930 h
Safety	UL listed (UL 1950)/cUL, IEC950/EN60950
LED indicators	Link, Power
Power consumption (typical)	70 W
Storage temperature (T-T)	-10 - 70 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 90 %

Weight and Dimensions

Weight	4000 g