44

Patch Release Note

PCR: 03441

Module: L2TP

Level: 2

PPPconfigured on a L2TP access concentrator (LAC) should be dynamic. If PPP was incorrectly configured to be static, the static PPP was destroyed when the L2TP tunnel was formed so that only the first connection succeeded. This issue has been resolved so that an L2TP tunnel is not created if the PPP is static.

PCR: 03443 Module: DHCP

Level: 3

When a DHCP entry expired while other DHCP entries in the range were in Reclaim mode, unnecessary ARP packets were generated causing an ARP storm. This issue has been resolved.

PCR: 03447

Module: PPP

Level: 2

A remotely assigned IP address on a PPP interface was not always released when the connection timed out. This issue has been resolved.

PCR: 03448

SWI

Level: 4

The output from the SHOW SWI FDB command now includes the total number of entries displayed.

PCR: 03450

PIM, PIM6

Level: 3

Receiving PIM State Refresh messages will now either create or maintain

PIM (S,G).

PCR: 03453

FIREWALL

Level: 4

The Dropped Packets counter was not incrementing correctly. This issue has been resolved.

PCR: 03454

IPV6

Level: 2

In rare circumstances, removing the cable from an IPv6 interface was resulting in fatal errors. This issue has been resolved.

PCR: 03456

Module: PIM

Level: 2

A VLAN interface receiving a PIM Prune message on a port stopped forwarding multicast data to that port too early. This could cause multicast data to arrive after a PIM Prune, so an override PIM Join message was not sent, leading to a loss of multicast data. This issue has been resolved.

PCR: 03457

Module: OSPF

Level: 2

Disabling OSPF caused a fatal error if there was a large routing table. This issue has been resolved.

PCR: 03459

Module: IPV6

Level: 2

A fatal error could occur if IPv6 flows were disabled while packets were being forwarded via an IPv6 interface. This issue has been resolved.

PCR: 03460

Module: PIM4

Level: 3

PIM-DM was delaying Assert messages after a prune hold time expired.

This issue has been resolved.

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

Page 44
Image 44
Allied Telesis SB251-13 manual PCR 03443 Module Dhcp Level, Pcr, PCR Module PIM4 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.