66

Patch Release Note

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

PCR: 02587

Module: OSPF

Network affecting: No

When OSPF was enabled on startup, an OSPF interface would sometimes stay in the DOWN state. This issue has been resolved.

PCR: 03001

Module: SWI CLASSIFIER

Network affecting: No

The following parameters have been changed CREATE CLASSIFIER, SET

CLASSIFIER and SHOW CLASSIFIER commands:

The MACTYPE parameter has been changed to MACTYPE={L2UCASTL2MCASTL2BCASTANY}. This resolves an error with internal hardware tables.

The number of user-specified protocols in the PROTOCOL parameter has been increased from three to seven.

The minimum value of the IPXDADDRESS parameter has been decreased from 10000000 to 00000001.

PCR: 03006

Module: SWI

Network affecting: No

An issue which sometimes resulted in a broadcast storm within the internal ports on the SwitchBlade, a reduction in bandwidth, and a loss of pinging has been resolved.

PCR: 3008

Module: SWI

Network affecting: No

An issue which caused pings to fail when a control card was inserted in the left hand slot to act as a slave, has been resolved.

PCR: 03014

Module: IPG, SWI

Network affecting: No

Support has been added to allow for multicasting to any number of overlapping VLANs up to the maximum number of multicast forwarding entries.

PCR: 03018

Module: SWI

Network affecting: No

An issue with pings failing after network host routes disappeared from the switch due to an IP hashing error has been resolved.

PCR: 03020

Module: SWI

Network affecting: No

An issue with an interrupt occurring when waiting on the MDIO which caused the MDIO to read or write incorrect information has been resolved.

PCR: 03021

Module: SWI

Network affecting: No

Ping would sometimes not work correctly after a 48 line card was extracted, and after a restart reboot. This issue has been resolved.

Availability

Patches can be downloaded from the Software Updates area of the Allied Telesyn web site at www.alliedtelesyn.co.nz/support/updates/patches.html. A licence or password is not required to use a patch.

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

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Allied Telesis SB251-13 Availability, PCR Module Ospf Network affecting No, PCR Module SWI Classifier 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.