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Patch Release Note

PCR: 03343

Module: UTILITY

Level: 4

Entering a “?” on the command line, now displays the correct list of available options.

PCR: 03345

Module: IPG

Level: 4

The RESET IP COUNTER=ALL command was not working correctly when issued from the command line. This issue has been resolved.

PCR: 03346 Module: SNMP

Level: 4

Sometimes the Agent Address field in SNMP traps was not the same as the IP source address. This meant that sometimes the NMS did not send an alarm to the network manager when traps were received from switches. This issue has been resolved.

PCR: 03349

Module: BGP

Level: 3

When there were a large number of BGP routes, the SHOW BGP ROUTE command sometimes caused an error. This issue has been resolved.

PCR: 03352

Module: PPP

Level: 3

The MRU parameter in the SET PPP command was incorrectly handled as an interface parameter when the configuration script was generated. This meant that the OVER parameter was omitted. The MRU parameter is now correctly handled as a link parameter.

Features in SB251-11

Patch SB251-11 includes all issues resolved and enhancements released in previous patches for Software Release 2.5.1, and the following enhancements:

After loading this software version, please check your alarm relay connections.

Refer to PCR 03209 for more information.

PCR: 02331

Module: IPG, ETH

Level: 2

IP is now informed when an Ethernet interface goes up or down, after a 2.5 second delay.

PCR: 02525

Module: TELNET, PING, IPV6, TCP

Level: 3

The ADD IPV6 command was not allowing the INTERFACE parameter to be used when adding a host with link local address. This issue has been resolved.

PCR: 02571

Module: IP

Level: 3

A fatal error occurred if the IP module was reset after the ADD IP EGP command was executed. This issue has been resolved.

PCR: 02577 Module: IPG, LOG

Level: 4

The ability to log MAC addresses whenever the ARP cache changes has been added. To enable this, use the command:

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

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Allied Telesis SB251-13 manual Features in SB251-11

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.