ZyXEL GS1900-48HP Switch Firmware 2.00(AAHO.0)C0

The ZyXEL GS1900-48HP is a managed switch targeting small and medium-sized businesses, providing features like VLAN, QoS, ACL, LACP, and more. It supports Gigabit Ethernet connections, and up to 30W of output power for PoE+ devices. The device's firmware version is 2.00(AAHO.0)C0.

Features

48 ports (4 SFP slots) with Gigabit Ethernet support
IEEE 802.3af/at PoE+ support with up to 30W of output power per port
Advanced Layer 2 features such as VLAN, QoS, ACL, LACP and IGMP Snooping
Web GUI, Command Line Interface (CLI), SNMP management interfaces
Dedicated VLAN/Voice VLAN/OozeWatch management improve network security and management efficiency
Multiple deployment methods (desk or rack mount)

Specifications

Model	ZyXEL GS1900-48HP Switch
Standards	IEEE 802.3 10Base-T Ethernet, IEEE 802.3u 100Base-TX Fast Ethernet, IEEE 802.3ab 1000Base-T Gigabit Ethernet, IEEE 802.3z Autonegotiation, IEEE 802.3x Flow Control
Performance	Switching capacity: 104 Gbps, Forwarding rate (64-byte packet size): 78 Mbps, Power-on or PoE input/maximum power: 20W/1440W
Management	Web-based GUI, Cloud mode, SNMP v1/v2c/v3, IPv6 management, System log, Configuration export/import
Ports	48 x 10/100/1000 Mbps RJ-45 (PoE+), 2 x 100/1000 Mbps SFP, 2 x 1000 Mbps SFP
Device Power Consumption	Without PoE: 22.4W (maximum), With PoE: 736.6W (full load)

Technologies Used

The device uses a variety of networking and security technologies, such as VLAN for network segmentation, QoS for traffic prioritization, LACP for link aggregation, and SNMP for network monitoring. Additional technologies include:

LLDP-MED for graceful shutdown of endpoints during switch maintenance
RADIUS for centralized authentication
IGMP Snooping to optimize multicast traffic delivery
Port Security for protecting access to that port

Known Issues

Some common issues with the ZyXEL GS1900-48HP switch include:

Disconnects or poor connection quality
PoE devices taking a long time to boot up
Inability to upgrade firmware in some cases
Issues with web management interface being slow to respond or not displaying properly
Interoperability issues when using certain third-party VoIP phones

Troubleshooting

If you're experiencing issues with your ZyXEL GS1900-48HP, try:

Rebooting the switch
Checking for firmware updates and applying them, if available
Using alternate ports on the switch or a different cable
Ensuring that the switch is receiving adequate ventilation
Starting connected PoE devices one at a time

Driver

You can download the device driver for the ZyXEL GS1900-48HP switch from the manufacturer's website. Installation instructions for the driver may vary depending on your operating system.

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