NETGEAR GS748T User Manual

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GS748T Smart Switch
IGMP Snooping Querier VLAN Status
Use this page to view the operational state and other information for IGMP snooping queriers
for VLANs on the network.
To access this page, click Switch
ing Multicast  IGMP Snooping Querier  Querier VLAN
Status.
The following table describes the information available on the Querier VLAN Status page.
Field Description
VLAN ID Specifies the VLAN ID on which the IGMP Snooping Querier is
administratively enabled and for which VLAN exists in the VLAN database.
Operational State Specifies the operational st
ate of the IGMP Snooping Querier on a VLAN:
• Querier: The snooping switch is the querier in the VLAN. The snooping
switch will send out periodic queries with a time interval equal to the
configured querier query interval. If the snooping switch sees a better
querier (numerically lower) in the VLAN, it moves to non-querier mode.
• Non-Quer
ier: The snooping switch is in non-querier mode in the VLAN.
If the querier expiry interval timer expires, the snooping switch moves
into querier mode.
• Disab
led: The snooping querier is not operational on the VLAN. The
snooping querier moves to disabled mode when IGMP snooping is not
operational on the VLAN, when the querier address is not configured, or
the network management address is not configured.
Operational Version Displays the IGMP protocol version
of the operational querier.
Last Querier Address Displays the IP address of the last querie
r from which a query was snooped
on the VLAN.

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