NETGEAR GS748T User Manual

122
GS748T Smart Switch
2. In the Snooping Querier Address field, specify the IP address to be used as source
address in periodic IGMP queries. This address is used when no address is configured on
the VLAN on which the query is being sent.
3. In the IGMP Version field, specify the IGMP protocol version used in periodic IGMP queries.
4. In the Query Interval field, specify the time interval in seconds between periodic queries
sent by the snooping querier. The Query Interval must be a value in the range of 1–1800
seconds. The default value is 60.
5. In the Querier Expiry Interval field, specify the time interval in seconds after which the last
querier information is removed. The Querier Expiry Interval must be a value in the range of
60–300 seconds. The default value is 60.
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. Click Apply to apply the new settings to the switch. Configuration changes take effect
immediately
8. Click Refresh to update the page with the latest information from the switch.

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