Allied Telesis SB251-13 manual

Models: SB251-13

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

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PCR: 03683 Module: SWCX

Level: 2

Jumbo packets could not be enabled on some ports of the 48 port line cards.

This issue has been resolved.

PCR: 03685

Module: SWI

Level: 2

CAM reads and writes were sometimes corrupted if generated whilst address learning was in progress. The result could be table corruption and unrecoverable lock up. This issue has been resolved.

PCR: 03690 Module: CORE

Level: 3

The SET SYS RPS=ON command is no longer supported on the

SwitchBlade. A message advising this, will now appear in the terminal

PCR: 03692

Module: BGP

Level: 2

Occasionally a fatal exception may have occurred when sending BGP aggregate routes. This issue has been resolved.

PCR: 03694 Module: SWCX

Level: 2

Port queues were not being cleared when their ports went down. This was resulting in a variety of problems. This issue has been resolved.

PCR: 03696

Module: IPG

Level: 2

IGMP snooping entries were not being deleted from the hardware table.

This issue has been resolved. Also, port timers are now updated when the

IGMP timeout is changed.

PCR: 03697

Module: SWI

Level: 2

Fatal errors occurred on occasions when mirroring was enabled. This issue has been resolved.

PCR: 03698 Module: DVMRP

Level: 3

The output of the SHOW DVMRP FORWARDING command did not display the forwarding ports. This issue has been resolved.

PCR: 03700

Module: STP

Level: 2

Fatal errors occurred when hotswapping a line cards that were running

Rapid STP mode. This issue has been resolved.

PCR: 03704

Module: BGP

Level: 2

BGP was importing the best route from IP without checking whether the route was reachable. BGP now selects the best reachable route. If there are no reachable routes, BGP will select the best unreachable route.

PCR: 03707

Module: STP

Level: 2

When adding a port to a VLAN, any STP ports that had been disabled in the default STP were re-enabled. This issue has been resolved.

PCR: 03708 Module: DHCP

Level: 2

When the DELETE DHCP RANGE command was executed, DHCP attempted to reclaim the addresses in that range. It also tried to reclaim

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

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Allied Telesis SB251-13 manual

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.