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Patch Release Note

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.

PCR: 03353

Module: PPP

Level: 3

Dynamic interface details were added through the SET INTERFACE command when the CREATE CONFIGURATION command was executed. This caused errors on startup. This issue has been resolved.

PCR: 03354

Module: Firewall

Level: 4

The command SET FIREWALL POLICY RULE BEFORE=24:00, which was used to set a rule back to its default of “until midnight,” was found to be failing. This issue has been resolved.

PCR: 03355

Module: IPV6

Level: 4

IPv6 over IPv4 tunnelling failed unless an IPv4 interface was configured.

This issue has been resolved.

PCR: 03356

Module: SWI

Level: 2

Deleting hardware filters on a SwitchBlade was producing fatal errors. This issue has been resolved.

PCR: 03359 Module: CORE

Level: 3

An incorrect object ID (OID) was being returned for Fan/PSU in SNMP v1 trap messages.This issue has been resolved.

PCR: 03360

Module: STP

Level: 4

Entering a ? after SET STP=stp-name, at the CLI, to request context-sensitive help, only returned the PORT and DEFAULT options. This issue has been resolved so that all options are now shown.

PCR: 03361

Module: SWI

Level: 2

A fatal error was occurring on the SwitchBlade if restarting the switch coincided with full line speed transmission into a G8F line card. This issue has been resolved.

PCR: 03364

Module: PIM

Level: 4

PIM will no longer accept obsolete commands.

PCR: 03369

Module: FIREWALL

Level: 2

TCP checksums in TCP packets passing through the firewall were being recalculated incorrectly when the TCP setup proxy was disabled, and enhanced NAT was in use. This issue has been resolved.

PCR: 03371 Module: DHCP

Level: 3

A minimum lease time can no longer be specified when creating a DHCP policy. This complies with RFC 2131.

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

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Allied Telesis SB251-13 manual PCR 03359 Module Core Level, PCR 03371 Module Dhcp 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.