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

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PCR: 03817

Module: IPV6

Level: 2

A fatal error occurred when IPv6 fragmented a packet. Also, when a large fragmented ICMP echo request packet was received, the reply may not have been fragmented and so may have exceeded the MTU for the interface it was sent on. These issues have been resolved.

PCR: 03819 Module: SWCX

Level: 3

Previously, Multicast Storm Protection limited broadcast packets when Broadcast Storm Protection was not enabled. This has been changed so that only multicast packets are limited when Multicast Storm Protection is enabled, and only broadcast packets are limited when Broadcast Storm Protection is enabled.

PCR: 03821 Module: SWCX

Level: 3

If a 10MB half-duplex link was connected to a port, the maximum bandwidth shown in the SHOW SWITCH TABLE command output was not updated. This issue has been resolved.

PCR: 03823 Module: VLAN

Level: 2

If the last port in a VLAN went down, that port was not automatically deleted from IGMP groups. This issue has been resolved.

PCR: 03824

Module: IPG

Level: 3

A multihomed interface sometimes sent duplicate multicast packets. This issue has been resolved.

PCR: 03825

Module: IPG

Level: 2

The incorrect logical interface was selected for broadcast packets received with a subnet mask that differed from the class mask. This issue has been resolved.

PCR: 03826

Module: BGP

Level: 2

When BGP imported routes from IP with the ADD BGP IMPORT command, and there were multiple import choices, the best IP route was not always imported. This issue has been resolved.

PCR: 03828

Module: IPV6

Level: 2

The MTU value for IPv6 PPP interfaces was always set to 1280 bytes. This

MTU value is now correctly set to 1500 bytes, and 1492 bytes for PPP over

Ethernet (PPPoE).

PCR: 03829 Module: SWCX

Level: 3

The value of the ifInErrors counter in the SHOW INTERFACE=interface command incorrectly showed the number of packets received with bytes in the normal range. This issue has been resolved. The ifInErrors counter now correctly shows the number of packets received that had errors.

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

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Allied Telesis SB251-13 manual PCR 03819 Module Swcx Level, PCR 03821 Module Swcx Level, PCR 03823 Module Vlan 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.