Cabletron Systems NB30 manual Configuring the Filtering Database, List, Address, Port Filtering

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NB-30 Bridging

The following Þelds are applicable to the scrollable Address Entry panel of

Filtering Database entries.

List

The List checkboxes at the bottom of the window indicate whether the associated entry type (Dynamic, Static, or Permanent) will be displayed in the scrollable table of address entries. A check next to the entry type indicates that it will be displayed.

Address

Lists the addresses for which the bridgeÕs Filtering Database has forwarding and/or Þltering information.

Type

Indicates the type of an entry in the database. The possible types are Dynamic, Static, or Permanent. You can alter the entry type, as described in the next section.

Port Filtering

Indicates the action that will take place at each bridge port when it receives frames from the selected address entry. An arrow between the ports indicates that the frames received from the address will be forwarded to the portÕs associated

segment (). A vertical bar between the ports indicates that frames will be

Þltered (blocked) from the portÕs associated segment ( ). You can alter the port Þltering action, as described in the next section.

Configuring the Filtering Database

You can conÞgure the Filtering Database by:

¥Altering the Ageing Time for Dynamic entries.

¥Changing the type of entry with the Type buttons.

¥Changing the Port Filtering action at each bridge port.

¥Adding or deleting individual Filtering Database entries.

¥Clearing all Permanent or Acquired Database entries from the Filtering Database.

Note that although conÞguration changes will appear in the window, no action actually takes place in the bridgeÕs Filtering Database until you click on OK in the bottom right of the window. This saves the new conÞguration.

Altering the Ageing Time

To alter the Ageing Time for Dynamic entries:

1.Highlight the Ageing Time field with the cursor.

2.Type in the new Ageing Time (allowable range is 10 to 1,000,000 seconds).

Filtering Database

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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 Getting Help Using On-line HelpAccessing On-line Documentation 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 Filtered Frames ForwardedFrames Received 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 OOW Ethernet Port Only Packets Filtered Blue Ethernet Port OnlyXmit Aborts 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 Max Age Time Changing Forwarding Delay TimeChanging Hello Time Changing Path Cost Filtering DatabaseChanging Port Priority NB-30 Bridging Number TypeCapacity Ageing TimeList Configuring the Filtering DatabaseAddress Port FilteringAdding or Deleting Individual Filtering Database Entries Changing the Type of EntryChanging the Port Filtering Action 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.
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