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Patch Release Note

Some of the issues addressed in this Release Note include a level number. This number reflects the importance of the issue that has been resolved. The levels are:

Level 1 This issue will cause significant interruption to network services, and there is no work-around.

Level 2 This issue will cause interruption to network service, however there is a work-around.

Level 3 This issue will seldom appear, and will cause minor inconvenience.

Level 4 This issue represents a cosmetic change and does not affect network operation.

Features in SB251-13

Patch SB251-13 includes all issues resolved and enhancements released in previous patches for Software Release 2.5.1, and the following enhancements:

PCR: 02414 Module: IPV6, SWI, IPG, VLAN

Level: 2

MLD snooping is now supported on AT-9800 Series Switches. It is not available on the SwitchBlade. Refer to the section, Multicast Listener Discovery (MLD) Snooping For SwitchBlade and AT-9800 Series Switches shown at the end of the SB251-13 features.

PCR: 03040

Module: IPG

Level: 3

Sometimes IP flows were not deleted correctly when both directions of the flow were in use. This issue has been resolved.

PCR: 03524

Module: OSPF, IPG

Level: 2

OSPF was disabling RIP unless RIP was activated using the SET OSPF RIP command. This issue has been resolved.

PCR: 03530

Module: IPG

Level: 2

Running the PURGE IP command with a multicast address and multiple sources was causing a fatal error. This issue has been resolved.

PCR: 03542

Module: HTTP

Level: 3

The value specified for the IP parameter in the ADD FIREWALL POLICY PROXY command was not being used by the HTTP proxy. This issue has been resolved.

PCR: 03598

Module: ETH, IPG, IPv6, IPX,

Level: 3

 

PORT, PPP.

 

After about 250 days, commands such as SHOW BRIDGE COUNT were not displaying the correct number of seconds for Uptime and Last Change At. days. 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 manual Features in SB251-13

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.