NETGEAR GS748T User Manual

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GS748T Smart Switch
The following table describes the detailed port information displayed on the screen. To view
information about a different port, select the port number from the Interface menu.
Field Description
Interface Use the drop down menu to select the interface for which data is to be
displayed or configured.
MST ID Displays the created or existing MSTs.
ifIndex This field indicates the ifIndex of the interface table entry associated with this
port on an adapter.
Port Type For most ports this field is blank. Otherwise the possible values are:
• Mirrored: Indicates that the port has been configured as a monitoring
port and is the source port in a port mirroring session. For additional
information about port monitoring and probe ports, see
Multiple Port
Mirroring on page 247.
• Probe: Indicates that the port has been configured as a monitoring port
and is the destination port in a port mirroring session. For additional
information about port monitoring and probe ports, see Multiple Port
Mirroring on page 247.
• Port Channel: Indicates that the port has been configured as a member
of a port-channel, which is also known as a link Aggregation Group (LAG).
Port Channel ID If the port is a member of a port channel, the port channel's interface ID and
name are shown. Otherwise, Disable is shown.
Port Role Each MST Bridge Port that is enabled is assigned a Port Role for each
spanning tree. The port role will be one of the following values: Root Port,
Designated Port, Alternate Port, Backup Port, Master Port, or Disabled Port.
STP Mode Displays the Spanning Tree Protocol (STP) Administrative Mode for the port or
LAG. The possible values for this field are:
• Enable: Enables the Spanning Tree Protocol for this port.
• Disable: Disables the Spanning Tree Protocol for this port.
STP State Displays the port's current state Spanning Tree state. This state controls what
action a port takes on receipt of a frame. If the bridge detects a malfunctioning
port it will place that port into the broken state. The other five states are
defined in IEEE 802.1D:
• Disabled
• Blocking
•Listening
• Learning
• Forwarding
• Broken
Admin Mode Displays the port control administration state:
• Enable: The port can participate in the network (default).
• Disable: The port is administratively down and does not participate in the
network.

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