NETGEAR GS748T User Manual

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GS748T Smart Switch
A Port Access Entity (PAE) is able to adopt one of two distinct roles within an access control
interaction:
1. Authenticato
r: A Port that enforces authentication before allowing access to services
available via that Port.
2. Supp
licant: A Port that attempts to access services offered by the Authenticator.
Additionally, there exists a third role:
3. Authenticati
on server: Performs the authentication function necessary to check the
credentials of the Supplicant on behalf of the Authenticator.
All three roles are required in order to complete an authentication exchange.
The GS748T Smart Switch supports the Authenticator role only, in which the PAE is
re
sponsible for communicating with the Supplicant. The Authenticator PAE is also
responsible for submitting the information received from the Supplicant to the Authentication
Server in order for the credentials to be checked, which will determine the authorization state
of the Port. The Authenticator PAE controls the authorized/unauthorized state of the
controlled Port depending on the outcome of the RADIUS-based authentication process.
Supplicant
Supplicant
Authenticator
Switch
Authentication
Server (RADIUS)
192.168.10.23
802.1X Example Configuration
This example shows how to configure the switch so that 802.1X-based authentication is
required on the ports in a corporate conference room (g1–g8). These ports are available to
visitors and need to be authenticated before granting access to the network. The
authentication is handled by an external RADIUS server. When the visitor is successfully
authenticated, traffic is automatically assigned to the guest VLAN. This example assumes
that a VLAN has been configured with a VLAN ID of 150 and VLAN Name of Guest.
1. F
rom the Port Authentication screen, select ports g1 through g8.
2. From the Po
rt Control menu, select Unauthorized.
The Port Control setting for all other ports where authentication is not needed should
Aut
horized. When the Port Control setting is Authorized, the port is unconditionally put in
a force-Authorized state and does not require any authentication. When the Port Control
setting is Auto, the authenticator PAE sets the controlled port mode.

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