Cabletron Systems NB30 manual NB-30 Bridge Port Status Display, Chassis Manager

Page 22

The NB-30 Bridge Chassis View

The NB-30 Bridge Port Status Display

Each port display on the NB-30 will indicate that portÕs current bridging state:

FWD (Forwarding)

(Green) The port is on line and forwarding packets across

 

the NB-30 from one network segment to another.

DIS (Disabled)

(Blue) Bridging at the port has been disabled by

 

management; no trafÞc can be received or forwarded on

 

this port, including conÞguration information for the

 

bridged topology.

LRN (Learning)

(Magenta) The Forwarding database is being created, or

 

the Spanning Tree Algorithm is being executed because

 

of a network topology change. The port is monitoring

 

network trafÞc, and learning network addresses.

LIS (Listening)

(Magenta) The port is not adding information to the

 

Þltering database. It is monitoring Bridge Protocol Data

 

Unit (BPDU) trafÞc while preparing to move to the

 

forwarding state.

BLK (Blocking)

(Orange) The port is on line, but Þltering trafÞc from

 

going across the NB-30 from one network segment to

 

another. Bridge topology information will be forwarded

 

by the port.

BRK (Broken)

(Red) The physical interface has malfunctioned.

Chassis Manager

Like most networking devices, CabletronÕs devices draw their functionality from a collection of proprietary MIBs and IETF RFCs. In addition, CabletronÕs newer intelligent devices organize their MIB data into a series of Òcomponents.Ó A MIB component is a logical grouping of MIB data, and each group controls a deÞned set of objects. Note that there is no one-to-one correspondence between MIBs and MIB components; a single MIB component might contain objects from several different proprietary MIBs and RFCs.

The Chassis Manager window, Figure 2-4,is a read-only window that displays the MIBs and the MIB components Ñ and, therefore, the functionality Ñ supported by the currently monitored device.

To view the Chassis Manager window:

1.Click on Help on the far right of the menu bar at the top of the Chassis View window.

2.Drag down to MIBs Supported, and release.

2-6

Viewing Chassis Information

Page 21 Page 23
Image 22
Page 21 Page 23
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.
Top Page Image Contents