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

27

PCR: 03317

Module: OSPF

Level: 2

Enabling OSPF via the GUI was sometimes causing fatal errors. This issue has been resolved.

PCR: 03318

Module: UTILITY

Level: 2

When commands specified the notation, line card.port number, port numbers greater than the theoretical maximum of 256 were handled incorrectly. This issue has been resolved.

PCR: 03321

Module: DHCP, Q931, TELNET

Level: 4

Debugging for DHCP and Q931 was not being disabled when a Telnet session finished. This issue has been resolved.

PCR: 03325

Module: IPG

Level: 3

Illegal memory access problems were not producing diagnostic exception reports (stack dumps). This issue has been resolved.

PCR: 03327

Module: I750

Level: 3

The console was locking up under certain rare fault conditions. This issue has been resolved.

PCR: 03329

Module: IPG

Level: 2

Each new entry into the IP routing table resulted in an ARP request being sent to resolve the next hop address. To prevent ARP flooding, a limit of 6 simultaneous ARP requests are transmitted.

PCR: 03331 Module: SWI, VLAN

Level: 2

Changing a port’s VLAN tagging was not updating the L3 multicasting entries for that port. This issue has been resolved.

PCR: 03332

Module: TTY

Level: 4

A log message is now created when a user is forced to logout from an asynchronous port when another user (i.e. someone connected via Telnet) resets the asynchronous connection with the RESET ASYN command.

PCR: 03333

Module: IPG

Level: 3

After VRRP was enabled, the link status of the switch ports was shown as UP, even if there was no connection to the ports. This issue has been resolved.

PCR: 03341

Module: STP

Level: 3

STP ignores some BPDU packets coming in on tagged ports. This issue has been resolved. Now the VLAN tag is ignored on all devices except Rapier i Series Switches with multiple STPs on the receiving port.

PCR: 03342

Module: IPV6

Level: 3

Multicast Listener Discovery (MLD) was not setting the filter mode correctly when receiving certain packet types whilst in EXCLUDE mode. This issue has been resolved.

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

Page 27
Image 27
Allied Telesis SB251-13 manual PCR Module DHCP, Q931, Telnet Level, PCR Module Level, PCR 03331 Module SWI, 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.