Patch SB251-13 For SwitchBlade 4000 Series Switches and AT-9800 Series Switches

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Packets could be sent with an incorrect source address if a route was added to a VLAN and another VLAN had an IP interface configured that was in the same subnet as the route. This issue has been resolved.

PCR: 03142

Module: SWI

Level: 1

If a BIST was run at low temperatures, for example 5 or 10 degrees Celsius, on a G8 card, then a watchdog timer restart could occur. The switch now checks for the real course of the external interrupts that occur when running BIST.

PCR: 03148

Module: IPG

Level: 3

If the Gratuitous ARP feature was enabled on an IP interface, and an ARP packet arrived, (either ARP request, or reply) that had a Target IP address that was equal to the sender’s IP address, then the ARP cache was not updated with the ARP packet’s source data. This issue has been resolved.

PCR: 03191

Module: SWI

Level: 1

If two line cards were inserted in quick succession, then a software restart could occasionally occur. This issue has been resolved.

PCR: 03192

Module: SWI

Level: 2

When the Built-In Self Test was run, a fault would occasionally be reported which said that a MAC address was not learnt during the loopback test. The ports in the BIST loopback test now remain in loopback.

Features in SB251-02

Table 8: Patch file details for Patch SB251-02.

Base Software Release File

sb-251.rez

 

 

Patch Release Date

25-Jan-2003

 

 

Compressed Patch File Name

sb251-02.paz

 

 

Compressed Patch File Size

48608 bytes

 

 

Patch SB251-02 includes all issues resolved and enhancements released in previous patches for Software Release 2.5.1, and the following enhancements:

PCR: 02553

Module: SWITCH

Network affecting: No

64 bit MIB counters were not incremented or cleared for port interfaces. This issue has been resolved.

PCR: 02574 Module: DVMRP

Network affecting: No

Some change actions, and the resending of prune messages were not operating correctly. This issue has been resolved.

PCR: 02582

Module: SWI

Network affecting: No

Pause flow control is now disabled by default on all ports. This improves performance of the switch when it is congested.

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

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Allied Telesis SB251-13 Features in SB251-02, PCR Module Switch Network affecting No, PCR Module SWI Network affecting No

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.