NETGEAR GS748T User Manual

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GS748T Smart Switch
FLASH Log Configuration
The FLASH log is a log that is stored in persistent storage, which means that the log
messages are retained across a switch reboot.
• T
he first log type is the system startup log. The system startup log stores the first N
messages received after system reboot. This log always has the log full operation
attribute set to stop on full and can store up to 32 messages.
• T
he second log type is the system operation log. The system operation log stores the
last N messages received during system operation. This log always has the log full
operation attribute set to overwrite. This log can store up to 1000 messages.
Either the system startup log or the system opera
tion log stores a message received by the
log subsystem that meets the storage criteria, but not both. On system startup, if the startup
log is configured, it stores messages up to its limit. The operation log, if configured, then
begins to store the messages.
Use the FLASH Log Configuration page to enable or disable persistent logging and
to set the
severity filter.
To access the FLASH Log Configuration page, click the Moni
toring  Logs tab, and then
click the FLASH Log link.
To configure the FLASH Log settings:
1. Use the
radio buttons in the Admin Status field to determine whether to log messages
to persistent storage.
• Enable: Enab
les persistent logging.
• Dis
able: Prevents the system from logging messages in persistent storage.
2. From the Se
verity Filter field, specify the type of log messages to record. A log records
messages equal to or above a configured severity threshold. For example, if you select
Error, the logged messages include Error, Critical, Alert, and Emergency. The default
severity level is Alert (1).

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

Summary

Getting Started

Connecting the Switch to the Network

Details how to connect the switch to the network for remote management and IP configuration.

Configuring the Network Settings on the Administrative System

Web Access

Configuring System Information

IP Configuration

Configures network information for the management interface, including IP address, subnet mask, and gateway.

IPv6 Network Configuration

Configuring Switching Information

Ports

Allows viewing and monitoring of physical port information and configuration settings.

Link Aggregation Groups

VLANs

Divides a physical network into separate logical networks for administration, security, and management.

Voice VLAN

Configures voice VLAN settings to ensure quality of IP phone traffic by prioritizing it.

Spanning Tree Protocol

Provides a tree topology to eliminate loops in bridged networks, supporting STP, RSTP, and MSTP.

Forwarding Database

Configuring Routing

Configuring IP Settings

Enables routing globally and allows viewing packet information, including IP configuration.

Configuring VLAN Routing

Configures VLAN routing interfaces to enable traffic flow between different VLANs.

Configuring and Viewing Routes

Allows configuration of static and default routes and viewing learned routes in the routing table.

Configuring ARP

Associates Layer 2 MAC addresses with Layer 3 IPv4 addresses for network communication using ARP.

Configuring Quality of Service

Class of Service

Lets you configure switch queueing aspects and map packet priority to appropriate queues.

Differentiated Services (DiffServ)

Supports classifying traffic into streams and providing QoS treatment based on defined per-hop behaviors.

Managing Device Security

Management Security Settings

Configures login password, RADIUS, TACACS+, and authentication lists for secure management access.

Configuring Management Access

Manages HTTP/HTTPS access, Access Control Profiles, and Access Rules for secure network access.

Port Authentication

Enables and configures port access control using 802.1X authentication for device access.

Traffic Control

Configures MAC Filters, Storm Control, and Port Security to manage and limit network traffic.

Configuring Access Control Lists

Defines rules to authorize users and block unwanted access to network resources via ACLs.

Monitoring the System

Ports

System Logs

Maintenance

Reset

Provides options for device reboot and resetting system configuration to factory default values.

Upload File From Switch

Download File To Switch

Troubleshooting

Appendix A: Hardware Specifications and Default Values