26

Patch Release Note

PCR: 03288

Module: L2TP

Level: 2

When a radius lookup performed by the L2TP Access Concentrator (LAC) failed, the LAC attempted to disconnect the call from its tunnel. If the tunnel had not been created, the device restarted. This issue has been resolved.

PCR: 03290

Module: SWI

Level: 2

PINGING between blades within the same switch failed whenever the current master was located in the right-hand slot and a control blade was located in the left-hand slot. This issue has been resolved.

PCR: 03291

Module: PPP

Level: 2

A PAP authentication failure with PPPoE could cause a fatal error. This issue has been resolved.

PCR: 03293

Module: PPP

Level: 3

The MAXSESSION parameter of the SET PPP ACSERVICE command could not be changed when the service was defined over a VLAN. This issue has been resolved.

PCR: 03294

Module: Alarm

Level: 4

The port formatting for alarm messages was incorrect. This issue has been resolved.

PCR: 03296

Module: IPG

Level: 2

Broadcast TCP packets were being processed by the device, causing fatal errors when firewall SMTP Proxy was configured. Non-unicast TCP packets are now dropped by IP.

PCR: 03298

Module: FIREWALL

Level: 3

The SHOW FIREWALL POLICY was not showing the correct debugging items, as set with the ENABLE FIREWALL POLICY DEBUG command. This issue has been resolved.

PCR: 03300

Module: FIREWALL

Level: 3

Firewall rules were not being applied to broadcast packets received on a public interface. This issue has been resolved.

PCR: 03305

Module: CORE, SWI

Level: 4

On the SwitchBlade, the SHOW SYSTEM command was not displaying the

PSU, fan tray, and fan status. This issue has been resolved.

PCR: 03311

Module: SWI

Level: 2

If the ADD SWITCH FILTER command was used to add a static filter entry for a specific MAC address, and the ACTION parameter was set to FORWARD, then a packet sent to this address from another switch port would result in packet flooding on other link cards.

PCR: 03316 Module: CORE

Level: 2

AT 9800 Series switches were not sending a temperature trap when the temperature exceeded the threshold of 40 °C. This issue has been resolved.

Patch SB251-13 for Software Release 2.5.1 C613-10361-00 REV M

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Allied Telesis SB251-13 manual PCR Module L2TP Level, PCR Module CORE, SWI Level, PCR 03316 Module Core Level

SB251-13 specifications

The Allied Telesis SB251-13 is a robust Layer 2 managed switch designed to meet the demands of various networking environments. With a comprehensive set of features, it serves as an ideal solution for enterprises looking to enhance their network infrastructure while maintaining performance and reliability.

One of the standout features of the SB251-13 is its 24 Gigabit Ethernet ports, which provide high-speed connectivity essential for modern applications. This switch supports both copper and fiber connections, making it versatile for different deployment scenarios. Additionally, it includes two SFP (Small Form-Factor Pluggable) ports that enable flexibility in uplink configurations, allowing for connectivity over longer distances with fiber optics.

The switch operates on a Layer 2 architecture, which ensures efficient data handling and robust traffic management. With VLAN (Virtual Local Area Network) support, users can segment their networks for improved traffic isolation and security. This feature is particularly beneficial in environments where segmentation is critical for performance and compliance.

Quality of Service (QoS) is another critical characteristic of the SB251-13, enabling priority-based traffic handling. This means that time-sensitive data, such as VoIP or video streams, can be given precedence over less critical traffic. This prioritization enhances the overall user experience and is vital for ensuring the smooth operation of real-time applications.

Allied Telesis also includes advanced security features in the SB251-13, such as port security, MAC address filtering, and access control lists (ACLs). These measures help protect the network from unauthorized access and potential threats, making it suitable for both enterprise and educational environments.

Power over Ethernet (PoE) support is another significant advantage of the SB251-13. This feature allows the switch to provide power to connected devices like IP cameras, phones, and access points, eliminating the need for separate power sources and making installations cleaner and more efficient.

The SB251-13 is also equipped with a user-friendly web-based management interface, facilitating easy configuration and monitoring. Network administrators can quickly set up, manage, and troubleshoot, streamlining operations and reducing downtime.

In conclusion, the Allied Telesis SB251-13 stands out as a sophisticated managed switch that combines performance, security, and manageability. Its rich feature set makes it a valuable asset for organizations aiming to build a reliable and efficient network infrastructure.