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Patch Release Note

PCR: 03178

Module: IPSEC

Level: 4

An unnecessary check has been removed from the CREATE ISAKMP

POLICY AUTHTYPE=RSASIG command.

PCR: 03185 Module: DHCP

Level: 2

A Switchblade configured as a DHCP client could not receive unicast messages. To resolve this issue, the Switchblade will now request that the server responds by using broadcast messages.

PCR: 03186

Module: CORE, FFS, TTY

Level: 4

When the QUIT option was chosen after the SHOW DEBUG command was executed, the output did not immediately stop. This issue has been resolved, but there may be a short delay before the command prompt reappears.

PCR: 03188

Module: IPG, SWI, VRRP

Level: 3

For switches configured for VRRP, it was not possible to Ping the switch operating in the Master state. This issue has been resolved.

PCR: 03189

Module: FIREWALL, LB

Level: 3

A fatal error occurred in the load balancer when there were no UP resources in a resource pool. This issue has been resolved. Load balanced TCP connections will now only retry SYNs once after 5 seconds. The round robin selection algorithm will now select an UP resource in a resource pool with only one UP resource, even if it was used for the last successful connection.

PCR: 03194

Module: LB

Level: 3

Sometimes healthcheck pings were not sent to the load balancer resources.

This issue has been resolved.

PCR: 03196

Module: IPV6

Level: 3

The system became unstable if the ADD IPV6 TUNNEL command failed. This instability was caused by the partially created tunnel entry not being properly removed from the tunnel database. The tunnel entry is now completely removed.

PCR: 03199

Module: IPV6

Level:

Invalid routes and packets were occurring within RIP. This issue has been resolved.

PCR: 03201

Module: SWI

Level: 4

AT-9800 Series switches with 16 ports could be configured beyond their 16 port maximum. Attempting to configure port 17 would produce no error message, and attempting to configure ports 18 and above would result in an incorrect error message. Also, the SwitchBlade could be allocated with 17 ports within a single trunk group, one port more than the maximum. These issues have been resolved; in both instances the maximum port configuration is now 16.

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

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Allied Telesis SB251-13 manual PCR 03185 Module Dhcp Level, PCR Module CORE, FFS, TTY 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.