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Patch Release Note

PCR: 03834 Module: SWCX

Level: 2

Hardware filters using classifiers that specified IP addresses were not accepted by the ADD SWITCH HWFILTER command when added in a particular order. This issue has been resolved.

PCR: 03835 Module: VLAN

Level: 3

If either the MCLIMIT or BCLIMIT parameter in the SET VLAN MCLIMIT BCLIMIT command was set to NONE, the other parameter was sometimes incorrectly set to NONE as well. This issue has been resolved.

PCR: 03836

Module: OSPF

Level: 2

OSPF sometimes chose routes with an infinite metric over routes with a finite metric when selecting the best local route. This issue has been resolved.

PCR: 03837 Module: VLAN

Level: 3

When browsing the ifInNUcastPkt MIB counter, the value was not correctly incremented because only broadcast packets were counted. This issue has been resolved.

PCR: 03839

Module: IPV6

Level: 2

A fatal error sometimes occurred when an IPv6 ping packet length

 

exceeded 1453 bytes. This issue has been resolved.

 

PCR: 03841

Module: IPG

Level: 2

A fatal error occurred when the PIM path was recovering. This issue has been resolved.

PCR: 03842

Module: IPG

Level: 3

MLD startup query packets were not being sent correctly due to IPv6 MLD being unaware of the IPv6 interfaces it was running on. This issue has been resolved.

PCR: 03843 Module: DHCP

Level: 2

When some DHCP entries were in Reclaim mode, and all interface links related to the range of these entries went down, these DHCP entries were stuck in Reclaim mode. This issue has been resolved.

PCR: 03846 Module: SWCX

Level: 2

An STP blocking port did not discard SNAP encapsulated packets with TYPE=00BB (ESRP packets). This caused a loop in the network. This issue has been resolved.

PCR: 03849

Module: SYSR

Level: 2

The GUI install file was not copied to the slave controller card after executing the SET INSTALL=GUI command. This issue has been resolved.

PCR: 03850

Module: FFS

Level: 3

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

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Allied Telesis SB251-13 manual PCR 03834 Module Swcx Level, PCR 03835 Module Vlan Level, PCR Module Ospf 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.