Cabletron Systems NB30 manual Restoring Bridge Defaults, Viewing the T1 Link Channel Status

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NB-30 Bridging

To halt a test in progress and return to the Bridge Status window, click on Cancel.

The results of the test will be displayed in the status Þeld next to the test button:

¥Not in Loopback Ñ Indicates that the DSX-1 port is currently in normal operating condition; a loopback test is not being performed.

¥Loopback in Progress Ñ The DSX-1 port is undergoing a test.

¥Network Loopback Ñ The remote port is currently looped toward the T1 link.

¥Loopback Passed Ñ The test was successful, and the T1 link is valid.

¥Loopback Failed Ñ The test failed, and the T1 link may be malfunctioning.

Viewing the T1 Link Channel Status

The DSX-1 Summary window also lets you see the status of each channel of the T1 link. Note that both bridges linked via the T1 line must share the same channel assignment. Up to 24 channels can be used in an NB-30 T1 link.

An Enabled status indicates that the associated channel is assigned to the T1 link; a Disabled status indicates the associated channel is not used for the link. The administrative state of each channel is set via local management. Refer to your NB-30 Local Management documentation for more information.

Restoring Bridge Defaults

!

CAUTION

From the Bridge Status window, you can use the Restore Defaults option to reset bridge identifying and operating parameters back to their Þrmware default settings.

Among the Þrmware defaults restored are those for Spanning Tree, Ethernet port redundancy (accessible via local management and MIBTree), and T1 channel assignment (accessible via local management and MIBTree). Make sure that network operations will not be adversely affected before selecting the Restore Defaults option.

The following operating parameters are accessible via SPECTRUM Element Manager. The restored defaults will be visible on-screen.

¥Bridge Location to LOCAL

¥Ethernet Port Name (1) to ETHERNET PORT 1

¥Remote Port Name (2) to REMOTE PORT

¥Net 1 Name to LAN_1

¥Net 2 Name to REMOTE LINK

¥Type of STA protocol to IEEE 802.1

Restoring Bridge Defaults

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Contents NB30 User’s Guide Page Virus Disclaimer Page Restricted Rights Notice Page Contents Index ContentsIntroduction Using the NB-30 Bridge User’s GuideIntroduction Related ManualsSoftware Conventions Using the MouseDevice Description Common NB-30 Bridge Window FieldsUsing Window Buttons Using On-line Help Accessing On-line DocumentationGetting Help Getting Help from the Cabletron Systems Global Call Center NB-30 Bridge FirmwareIntroduction NB-30 Bridge Firmware NB-30 Bridge Chassis View Viewing Chassis Information Front Panel Information Date Menu StructureUtilities Menu Device MenuHelp Menu Board MenuChassis Manager NB-30 Bridge Port Status DisplayViewing Hardware Types Managing the BridgeEdit Date Window Setting the Device Date and TimeEnabling and Disabling Bridging NB-30 Bridge Chassis View Managing the Bridge Bridging Basics NB-30 BridgingViewing and Managing Bridging Interfaces About Transparent BridgingBridge Status Bridge Location Bridge Status ConditionOK/SQE on Bridge State on InterfaceBridge Status on Remote Port Interface Interface Type Interface NameBridge Port Address Local Ethernet Port Segment NameEnabling and Disabling Bridging Accessing Bridge Status Window OptionsPerformance Graphs Bridge StatisticsFrames Forwarded Frames ReceivedFrames Filtered Nothing Device ErrorsDiscarded Inbound Ethernet Port Only Forwarded OutboundTimeout Remote Port Only CRC ErrorsTotal Errors Out of Window Coll. Ethernet Port OnlyBridge Summary Statistics Window Bridge Summary StatisticsEthernet and Remote Port Statistics Remote Port Statistics Window Packets Filtered Blue Ethernet Port Only Xmit Aborts Ethernet Port OnlyOOW Ethernet Port Only Bridge Spanning Tree TimeoutFraming GiantsBridge Spanning Tree Window Bridge Level Parameters Protocol Forwarding DelayHello Time Max AgeBridge Port Level Parameters Topology Configuring Spanning TreeChanging Bridge Priority Changing the Spanning Tree Algorithm Protocol TypeChanging Forwarding Delay Time Changing Hello TimeChanging Max Age Time Filtering Database Changing Port PriorityChanging Path Cost NB-30 Bridging Number TypeCapacity Ageing TimeList Configuring the Filtering DatabaseAddress Port FilteringChanging the Type of Entry Changing the Port Filtering ActionAdding or Deleting Individual Filtering Database Entries Erasing Entries from the Permanent or Acquired Databases DSX-1 SummaryBridge DSX-1 Summary Window Configuring, Running, and Checking the Loopback TestViewing the T1 Link Channel Status Restoring Bridge DefaultsSelect Restore Defaults Resetting Bridge CountersSelect Reset Counters Restarting the BridgeNB-30 Bridging Restarting the Bridge NB-30 Bridging Restarting the Bridge Index Index-2 Index-3 Index Index-4

NB30 specifications

Cabletron Systems NB30 is a noteworthy networking device that emerged in the mid-1990s as a critical component for businesses looking to enhance their local area network (LAN) capabilities. Designed primarily for the burgeoning demand of network speed and reliability, the NB30 served as a bridge in networking technology, offering organizations a robust solution to keep up with the advancing digital landscape.

One of the main features of the Cabletron NB30 is its ability to support both Ethernet and Token Ring protocols. This dual compatibility made it an attractive choice for enterprises that were transitioning from older networking systems to newer infrastructures. By accommodating both technologies, the NB30 enabled smoother migrations without necessitating a complete overhaul of existing networking components.

Another significant characteristic of the NB30 is its modular architecture. This design allowed organizations to customize their networking setup according to specific needs and preferences. Users could add or replace modules to enhance functionality, from extra ports to support additional devices or advanced features like network management tools, ensuring that their systems could grow and evolve in tandem with their business requirements.

The NB30 also utilized a stackable design, which facilitated scalability. Organizations could easily connect multiple NB30 units to increase their network capacity and performance. This stacking capability was a significant advantage as it allowed for efficient use of space and resources while providing a path for future growth.

In terms of performance, the Cabletron NB30 boasted a switching capacity that enabled quick data transfer rates, reducing latency and improving overall network responsiveness. This speed was crucial during a period when businesses were increasingly reliant on real-time data exchange and communication.

Additionally, the NB30 incorporated advanced network management features, enabling administrators to monitor traffic, diagnose issues, and implement changes with ease. This level of control was essential for maintaining network health, ensuring that businesses remained operational without unnecessary downtimes.

Overall, Cabletron Systems NB30 played a pivotal role in the evolution of networking technology. Its combination of protocol flexibility, modular design, scalability, and robust performance made it a popular choice for businesses looking to create efficient, dependable networks in an era of rapid technological advancement. The NB30's legacy continues to influence modern networking solutions, demonstrating the importance of adaptability and performance in the ever-changing digital world.