Allied Telesis SB251-13 manual Features in SB251-07, PCR Module STP, SWI Level

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Patch Release Note

An issue exists where the CAM entry 0 in the VLAN Tag table is either not updated or is being over written with invalid data. This PCR adds debugging to trace the fault.

Features in SB251-07

Patch file details are listed in Table 3:

Table 3: Patch file details for Patch SB251-07.

Base Software Release File

sb-251.rez

 

 

Patch Release Date

22-Apr-2003

 

 

Compressed Patch File Name

sb251-07.paz

 

 

Compressed Patch File Size

86524 bytes

 

 

Patch SB251-07 includes all issues resolved and enhancements released in previous patches for Software Release 2.5.1, and the following enhancements:

PCR: 03399

Module: STP, SWI

Level: 1

With this enhancement:

•STP and Port Trunking now work together correctly.

•BDPU Forwarding is implemented. The BPDU Forwarding feature configures the switch to forward all received STP BPDUs. Under normal circumstances, the switch will not forward any received STP BPDUs, even if STP is enabled.

This implementation is for standard STP, it does not guarantee that RSTP and port trunking will work correctly together in all situations.

STP does not update the pathcost for trunked ports, which means that a trunk group has the same pathcost as a single port. This may cause STP Blocking where it is not expected. To overcome this, the user should explicitly set the pathcost for the trunk group ports to be less than the default value for a single port.

STP reconfigures if the Master port in a trunk group goes link down. If the Master port in a trunk group goes link down, and a Non-Master port is still link-up, then STP will go through the Listening>Learning>Forwarding reconfiguration on the new Master port. This means that there will be a switching outage on the trunk group whilst the new Master port transitions to the Forwarding state.

Command handler changes:

•The PORT parameter of the CREATE SWITCH TRUNK PORT and ADD SWITCH TRUNK PORT commands must specify ports that have identical STP port configurations.

•The ENABLE STP and ENABLE STP PORT commands cannot be used to enable STP operation on a port that has been disabled from STP operation because of Port Trunking. Only the Master port in a trunk group actively participates in the STP algorithm. Non-Master ports in the trunk group are in the STP Disabled State.

•The output for the SHOW STP PORT command has been modified so that Non-Master Ports in a trunk group do not take part in the STP algorithm.

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

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Contents Introduction Features in SB251-13 PCR 03688 Module SYSRLevel PCR 03643 Module CLNS/OSILevelPCR 03714 Module VLANLevel PCR Module SWI, STP Level PCR 03717 Module IP, Swcx LevelPCR Module TTY, User Level PCR Module SWI LevelPCR Module Vrrp Level PCR Module FILE, INSTALL, SCR LevelPCR Module Install Level PCR 03751 Module Mlds LevelPCR Module Firewall Level PCR 03800 Module Load LevelPCR 03801 Module Mlds Level PCR Module Utility LevelPCR 03823 Module Vlan Level PCR 03819 Module Swcx LevelPCR 03821 Module Swcx Level PCR 03829 Module Swcx LevelPCR Module Ospf Level PCR 03834 Module Swcx LevelPCR 03835 Module Vlan Level PCR 03837 Module Vlan LevelPCR 03857 Module Swcx Level PCR Module Cflash LevelPCR 03887 Module Swcx Level PCR 03879 Module Dhcp LevelPCR Module SWICX, SWI Level PCR Module DHCP, Telnet LevelPCR Module PIM Level PCR 03913 Module Swcx LevelPCR Module IP, ARP Level PCR 03923 Module Core LevelPCR Module BGP, IPG Level PCR Module SWI, Core LevelPCR 03966 Module Mlds Level PCR Module SWCX, SWI LevelPCR 031005 Module Swcx Level PCR 031008 Module Cflash Install LevelPCR 031003 Module QOS Level PCR 031006 Module STP SWI LevelPCR 031033 Module Level Multicast Listener Discovery Snooping To enable MLD snooping, use the command Example output from the Show Mldsnooping command Example output from the Show Mldsnooping Counter command PCR 03661 Module Swcx Level Features in SB251-12PCR 03744 Module IPG, Swcx Level PCR Module IPG, SWI, Vrrp Level PCR 03777 Module QOS LevelPCR 03782 Module QOS Level PCR Module FIREWALL, LB LevelPCR Module Alarm Level PCR Module LB LevelPCR Module PIM, PIM6 Level PCR Module Ping LevelPCR 03217 Module Dvmrp Level PCR 032231 STP Level PCR 03229 Module Load LevelPCR 03239 Module QOS Level PCR 03248 Module Vlan Level PCR Module ETH, IPG LevelPCR Module SWI, IPG, PIM Level PCR 03256 Module MLD LevelPCR Module VLAN, IPG Level PCR 03273 Module Alarm LevelPCR 03260 Module SWI, Snmp Level PCR Module PPP LevelPCR Module CORE, SWI Level PCR Module L2TP LevelPCR 03316 Module Core Level PCR 03331 Module SWI, Vlan Level PCR Module DHCP, Q931, Telnet LevelPCR Module Level PCR Module TTY LevelFeatures in SB251-11 PCR 03067 Module Dhcp Level PCR Module SWI,VLAN LevelPCR 03126 Module Dhcp Level PCR 03078 Module SWI, Vlan LevelPCR 03095 Module Dhcp Level PCR Module Cure LevelPCR Module Port Level PCR 03167 Module Dvmrp LevelPCR 03185 Module Dhcp Level PCR Module CORE, FFS, TTY LevelPCR 03209 Module Alarm PCR 03229 Module Load Level PCR 03239 Module QOS Level PCR 03256 Module MLD Level PCR Module IPV6 Level PCR Module Firewall Level PCR 03331 Module SWI, Vlan Level PCR 03359 Module Core Level PCR 03371 Module Dhcp LevelPCR Module Ipsec Level PCR Module SSL Level PCR 03388 Module Dhcp LevelPCR Module OSI/CLNS Level PCR 03424 Module Dhcp LevelPCR 03438 Module Dhcp Level PCR 03429 Module SWI, Vlan LevelPCR 03436 Module IP, Dhcp Level PCR Module IPX LevelPCR PCR 03443 Module Dhcp LevelPCR Module PIM4 Level PCR 03465 Module Dhcp Level PCR 03469 Module Core LevelPCR 03492 Module HTTP, Load Level PCR Module BGP, Firewall LevelPCR 03515 Module Dhcp Level PCR Module Ikmp LevelPCR Module HTTP, Firewall Level PCR Module ALARM, Cflash LevelPCR Module BGP, TCP Level PCR 03547 Module Dhcp LevelPCR 03561 Module Core Level PCR 03584 Module MLD Level PCR Module FIREWALL, IPG LevelPCR 03590 Module Dhcp Level PCR 03593 Module CORE, Snmp Level PCR Module FW LevelPCR 03599 Module Core Level PCR Module Classifier Level PCR 03618 Module Dhcp LevelPCR Module STP, SWI Level PCR 03633 Module Swcx LevelPCR 03647 Module Snmp Level PCR 03644 Module Snmp LevelPCR 03648 Module Core Level PCR Module File Level PCR 03670 Module Swcx LevelPCR 03694 Module Swcx Level PCR 03683 Module Swcx LevelPCR 03690 Module Core Level PCR 03698 Module Dvmrp LevelPCR Module SW Level PCR 03709 Module Swcx LevelPCR 03725 Module Swcx Level Features in SB251-08 Patch file details are listed in TableFeatures in SB251-07 PCR Module SWI Features in SB251-06Features in SB251-05 PCR Module SWI, Sysr LevelFeatures in SB251-04 PCR Module TCP Level3 Features in SB251-03PCR Module GUI Level2 PCR Module IPG, SWI Level PCR 03071 Module Core LevelPCR Module Core Level PCR 02574 Module Dvmrp Network affecting No Features in SB251-02PCR Module Switch Network affecting No PCR Module SWI Network affecting NoPCR Module QOS Network affecting No PCR Module SWITCH, IPG Network affecting NoPCR Module Firewall Network affecting No PCR 03047 Module Core Network affecting NoPCR 02568 Module Core Network affecting No Features in SB251-01PCR 02396 Module Dhcp Network affecting No PCR Module SWI Classifier Network affecting No AvailabilityPCR Module Ospf Network affecting No PCR Module IPG, SWI 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.
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