server, the SNTP client listens for the response. The SNTP client neither sends time information requests nor receives responses from the Broadcast server.

Message Digest 5 (MD5) Authentication safeguards device synchronization paths to SNTP servers. MD5 is an algorithm that produces a 128-bit hash. MD5 is a variation of MD4, and increases MD4 security. MD5 verifies the integrity of the communication, authenticates the origin of the communication.

3.2.2 Defining SNTP Global Settings

The SNTP Properties Page provides information for defining SNTP parameters globally.

To define the SNTP global parameters:

1.Click System > System Info > SNTP > Properties. The SNTP Properties Page opens:

Figure 12: SNTP Properties Page

The SNTP Properties Page contains the following fields:

Poll Interval — Defines the interval (in seconds) at which the SNTP server is polled for Unicast information. The Poll Interval default is 1024 seconds.

Enable Receive Broadcast Servers Updates — Defines whether or not the device monitors the SNTP servers for Broadcast server time information on the selected interfaces. The possible values are:

–Enable — Enables the device to receive Broadcast server updates.

–Disable — Disables the device from receiving Broadcast server updates.

Enable Receive Anycast Servers Updates — Defines whether or not the device polls the SNTP server for Anycast server time information. If both the Enable Receive Anycast Servers Update and the Enable Receive Broadcast Servers Update fields are enabled, the system time is set according to the Anycast server time information. The possible values are:

–Enable — Enables the device to receive Anycast server updates.

–Disable — Disables the device from receiving Anycast server updates.

Enable Receive Unicast Servers Updates — Defines whether or not the device polls the SNTP server for Unicast server time information. If the Enable Receive Broadcast Servers Updates, Enable Receive Anycast Servers Updates, and Enable Receive Unicast Servers Updates fields are all enabled, the system time is set according the Unicast server time information. The possible values are:

–Enable — Enables the device to receive Unicast server updates.

–Disable — Disables the device from receiving Unicast server updates.

Enable Poll Unicast Servers — Defines whether or not the device sends SNTP Unicast forwarding information to the SNTP server. The possible values are:

–Enable — Enables the device to receive Poll Unicast server updates.

–Disable — Disables the device from receiving Poll Unicast server updates.

2.Define the Poll Interval, Enable Receive Broadcast Servers Update, Enable Receive Anycast Servers Update, Enable Receive Unicast Servers Update, and Enable Poll Unicast Servers fields and select at least one of the Enable fields.

3.Click . The SNTP global settings are defined, and the device is updated.

3.2.3 Configuring SNTP Authentication

The SNTP Authentication Page enables configuring the SNTP authentication method.

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TP-Link TL-SG3109, TL-SL3452, TL-SL3428 manual Defining Sntp Global Settings, Configuring Sntp Authentication
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TL-SG3109, TL-SL3428, TL-SL3452 specifications

The TP-Link TL-SL3428 is a feature-rich Ethernet switch designed for small to medium-sized business environments. It is part of TP-Link’s JetStream series, which emphasizes reliability, performance, and robust management capabilities. Built with 28 10/100/1000 Mbps ports, the TL-SL3428 provides sufficient bandwidth to support a wide range of network applications.

One of the standout features of the TL-SL3428 is its support for Layer 2 management protocols. This allows for more granular control and optimized performance across network segments. The switch supports VLAN (Virtual Local Area Network) segmentation, which enhances network security and efficiency by isolating various types of traffic. This feature is particularly useful in larger organizations where different departments or teams may require separate network environments.

The TL-SL3428 also includes advanced QoS (Quality of Service) capabilities. This functionality prioritizes traffic based on predefined rules, which ensures that critical applications receive the necessary bandwidth to function optimally. With QoS implementation, users can experience minimized latency, leading to better performance in VoIP and video conferencing applications.

In terms of redundancy and reliability, the switch also supports Link Aggregation Control Protocol (LACP), enabling multiple connections to be combined for increased bandwidth and failover support. This feature significantly enhances network resilience, ensuring minimal downtime during failures.

Power over Ethernet (PoE) support is another important characteristic of the TL-SL3428. With PoE capabilities, this switch can deliver electrical power along with data over the same Ethernet cable, simplifying installation and reducing the need for additional wiring. This is especially advantageous for IP devices like cameras, access points, and VoIP phones.

Security features are abundant in the TL-SL3428 as well. It implements port security, storm control, and DHCP snooping, all of which contribute to a secure network infrastructure. The switch’s management capabilities can be accessed through a user-friendly web interface, making it easier for IT administrators to configure and monitor network activities.

Overall, the TP-Link TL-SL3428 is an exemplary choice for businesses looking to enhance their network performance with advanced management features, security protocols, and reliability. Its combination of speed, flexibility, and manageability make it a valuable tool for any growing organization.
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