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

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Features in SB251-01

Patch file details are listed in Table 9:

Table 9: Patch file details for Patch SB251-01.

Base Software Release File

sb-251.rez

 

 

Patch Release Date

15-Jan-2003

 

 

Compressed Patch File Name

sb251-01.paz

 

 

Compressed Patch File Size

71828 bytes

 

 

PCR: 02555

Module: SWI

Network affecting: No

Layer 2 filtering is now working correctly.

PCR: 02561

Module: SWI

Network affecting: No

32 bit counters now only show 8 bit contents.

PCR: 02563

Module: SWI

Network affecting: No

The IPM (Layer 3 Multicasting table) now updates correctly to add or delete the ingress linecard to control blade ports, and the control blade to egress linecard ports when updating forwarding.

PCR: 02568 Module: CORE

Network affecting: No

The ENABLE SYSTEM SECURITY_MODE command was enabling the system security mode, but after the switch was restarted the system security mode was disabled again. Also, when NVS was re-initialised because, for example a battery had been exhausted, the system could not make an SNMP trap. These issues have been resolved.

PCR: 02576

Module: SWI

Network affecting: No

When the DISABLE SWITCH PORT FLOW=PAUSE command was executed on a port or ports, they would still appear to be enabled at a higher level. This issue has been resolved.

PCR: 02396 Module: DHCP

Network affecting: No

DHCP RENEW request messages are now unicast (as defined in the RFC), not broadcast.

PCR: 02575

Module: SWI

Network affecting: No

VLAN tagged multicast packets were incorrectly being sent over untagged

VLAN interfaces. This issue has been resolved.

PCR: 02574 Module: DVMRP

Network affecting: No

Some change actions, and the resending of prune messages were not operating correctly. This issue has been resolved.

PCR: 02582

Module: SWI

Network affecting: No

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

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Allied Telesis SB251-13 manual Features in SB251-01, PCR 02568 Module Core 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.