Cabletron Systems NB30 Enabling and Disabling Bridging, Accessing Bridge Status Window Options

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NB-30 Bridging

Accessing Bridge Status Window Options

At the top of the Bridge Status window, you can click on Bridge to access a menu that provides other bridge management options:

¥The Spanning Tree window, which allows you to set the Spanning Tree Algorithm parameters for bridging on your NB-30 (see Bridge Spanning Tree, page 3-17).

¥The Disable/Enable Bridge options, which allow you to suspend or resume bridge operations (see Enabling and Disabling Bridging, page 3-8).

¥A Bridge Performance Graph window and Bridge Summary Statistics window, which display network statistics Ñ both numerically and graphically Ñ for trafÞc across the entire bridge (see Bridge Statistics, page 3-9).

You can also access a Performance Graph and Statistics window for each individual interface by clicking on a port index button to display the port level management options (see Bridge Statistics, page 3-9).

¥The Filtering Database window, which lets you conÞgure the NB-30 bridgeÕs Acquired and Permanent Þltering databases to Þlter or forward trafÞc across the NB-30 (see Filtering Database, page 3-24).

¥The Reset Counters, Restore Defaults, and Restart Bridge options, which allow you to refresh operating parameters at the bridge (see Restoring Bridge Defaults, page 3-31;Resetting Bridge Counters, page 3-32; or Restarting the Bridge, page 3-32).

Enabling and Disabling Bridging

When you disable a bridge, you disconnect all its port networks from the bridge entirely. Its bridge ports do not forward any packets, nor do they participate in Spanning Tree operations. Nodes connected to the networks can still communicate with each other, but they canÕt communicate with the bridge and other networks connected to the bridge. When you enable bridge ports, they move from the Disabled state through the Learning and Listening states to the Forwarding or Blocking state (as determined by Spanning Tree).

When you disable bridging across the device, you simultaneously disable bridging at all ports supported by the device.

To disable bridging across both ports on your NB-30 from the Bridge Status window:

1.From the Bridge Status window, click on Bridge. A menu will appear.

2.Click on Enable Bridge to restart bridging at the device level, or Disable Bridge to halt bridging across the entire device.

3-8

Enabling and Disabling Bridging

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Contents NB30 User’s Guide Page Virus Disclaimer Page Restricted Rights Notice Page Contents Contents IndexUsing the NB-30 Bridge User’s Guide IntroductionRelated Manuals IntroductionUsing the Mouse Software ConventionsCommon NB-30 Bridge Window Fields Device DescriptionUsing Window Buttons Accessing On-line Documentation Using On-line HelpGetting Help NB-30 Bridge Firmware Getting Help from the Cabletron Systems Global Call CenterIntroduction NB-30 Bridge Firmware NB-30 Bridge Chassis View Viewing Chassis Information Front Panel Information Menu Structure DateHelp Menu Device MenuUtilities Menu Board MenuNB-30 Bridge Port Status Display Chassis ManagerManaging the Bridge Viewing Hardware TypesSetting the Device Date and Time Edit Date WindowEnabling and Disabling Bridging NB-30 Bridge Chassis View Managing the Bridge NB-30 Bridging Bridging BasicsAbout Transparent Bridging Viewing and Managing Bridging InterfacesBridge Status Bridge Status Condition Bridge LocationBridge State on Interface OK/SQE onBridge Status on Remote Port Interface Bridge Port Address Local Ethernet Port Interface NameInterface Type Segment NameAccessing Bridge Status Window Options Enabling and Disabling BridgingBridge Statistics Performance GraphsFrames Received Frames ForwardedFrames Filtered Discarded Inbound Ethernet Port Only Device ErrorsNothing Forwarded OutboundTotal Errors CRC ErrorsTimeout Remote Port Only Out of Window Coll. Ethernet Port OnlyBridge Summary Statistics Bridge Summary Statistics WindowEthernet and Remote Port Statistics Remote Port Statistics Window Xmit Aborts Ethernet Port Only Packets Filtered Blue Ethernet Port OnlyOOW Ethernet Port Only Framing TimeoutBridge Spanning Tree GiantsBridge Spanning Tree Window Bridge Level Parameters Hello Time Forwarding DelayProtocol Max AgeBridge Port Level Parameters Changing Bridge Priority Configuring Spanning TreeTopology Changing the Spanning Tree Algorithm Protocol TypeChanging Hello Time Changing Forwarding Delay TimeChanging Max Age Time Changing Port Priority Filtering DatabaseChanging Path Cost NB-30 Bridging Capacity TypeNumber Ageing TimeAddress Configuring the Filtering DatabaseList Port FilteringChanging the Port Filtering Action Changing the Type of EntryAdding or Deleting Individual Filtering Database Entries DSX-1 Summary Erasing Entries from the Permanent or Acquired DatabasesConfiguring, Running, and Checking the Loopback Test Bridge DSX-1 Summary WindowRestoring Bridge Defaults Viewing the T1 Link Channel StatusSelect Reset Counters Resetting Bridge CountersSelect Restore Defaults 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.