Cabletron Systems NBR-220, NBR-420, NBR-620 manual From an Alarm message display

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Using the LCD

From the product name display

Press and hold the DISPLAY button for 3 seconds while the product name is displayed. When the button is released, the display steps to the Alarm messages. Then press and hold the DISPLAY button for another 3 seconds. When the button is released, the display steps to the first Saved System message. Thereafter, each time you press the DISPLAY button, the next Saved System message is displayed.

From an Alarm message display

Press and hold the DISPLAY button for 3 seconds while an Alarm message is displayed. When released, the display steps to one of the Saved System messages. Thereafter, each time you press the DISPLAY button, the next Saved System message is displayed.

To Exit

There are two ways to exit the Saved System messages:

Automatic 20-second exit

Allow 20 seconds to elapse after the last DISPLAY button operation. The display returns to the product name.

From any displayed System message

Press and hold the DISPLAY button for 3 seconds. When released, the display automatically returns to the product name.

NBR-SERIES Installation Guide

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Contents Installation Guide Port B Port aNBR-SERIES Installation Guide DOC Notice Cabletron Software Program License Declaration of Conformity Contents Contents NBR-SERIES Installation Guide Vii Chapter Introduction NBR-SERIES of Network ProductsUsing this Manual NBR Features Mibii MIB Navigation Conventions Used in this Document Related ManualsGetting Help Your email addressChapter Controls and Indicators Lanview LEDs Reset ButtonLCD Display Chapter Installation Unpacking the NBRPreparing the NBR for Installation Removing Chassis CoverPreparing the NBR for Installation Switch, BRIM, and Simm Locations Setting Mode Switches Setting Nvram Reset Switch Installing Simm Upgrades Installing Flash SIMMsInstall a Flash Simm as follows Installing Ldram and Sdram SIMMs Adding/Replacing EPIMsInstall an Epim as follows Adding/Replacing BRIMsTesting the NBR If a failure occurs, see for troubleshooting instructionsInstalling the NBR Installation Check-outAttaching the Strain-Relief Bracket Attaching the Strain-Relief BracketRack Mounting the NBR Rack Mounting BracketsFree-Standing Installation Connecting the NBR to the Power SourceRefer to individual Brim Guides for Brim LED status Connecting the NBR to the Network Connecting a Twisted Pair Segment to an EPIM-T13 Cable Pinouts EPIM-T RJ45 Port Connecting an AUI Cable to an EPIM-X 14 The EPIM-XConnecting a Fiber Optic Cable to an EPIM-F1/F2 or EPIM-F3 15 The EPIM-F1/F2 and EPIM-F3 Connecting a Thin-Net Segment to an EPIM-C Connecting an AUI Cable to an EPIM-A 16 The EPIM-C17 The EPIM-A Chapter Troubleshooting Using LanviewTroubleshooting Using Lanview Troubleshooting Checklist Troubleshooting Checklist Using the LCD ResetUnsaved Initialization Messages Static System MessagesFrom the last Static System message Alarm Messages From the product name displaySaved System Messages From an Alarm message display Failure or Error Messages Using the Reset ButtonAppendix a NBR Specifications Operating SpecificationsCOM Port Pinouts Power Supply Requirements Physical PropertiesEnvironmental Requirements CertificationEpim Specifications Appendix B Epim SpecificationsEPIM-T EPIM-F1/F2 NBR-SERIES Installation Guide B-3 EPIM-F3B-4 NBR-SERIES Installation Guide EPIM-C GroundingEPIM-A and EPIM-X Network Cable Requirements Appendix C Network Planning and Configuration1 10BASE-T Twisted Pair Network C-2 NBR-SERIES Installation Guide Multimode Fiber Optic Network Single Mode Fiber Optic Network Thin-Net Network NBR AS a Multiport Router Transceiver RequirementsNBR-420/NBR-620 and Brims Appendix D Additional Information NBR OverviewEthernet Channels A, B, C, and D Channels E and FBridging Functionality Index NBRPower Supply Cord

NBR-620, NBR-220, NBR-420 specifications

Cabletron Systems, a well-known name in the networking field, has designed a range of network interface devices including the NBR-620, NBR-220, and NBR-420 models. These devices have become essential components for businesses looking to enhance their network performance and reliability.

The NBR-620, for instance, is a high-performance network bridge/router that specializes in managing network traffic efficiently. It offers a robust set of features such as multiple Ethernet ports, which can support various data rates, including 10/100/1000 Mbps, making it ideal for both small and large enterprises. The NBR-620 supports advanced routing protocols like OSPF and RIP, which optimize data path selection and ensure effective communication across different network segments. Moreover, its built-in firewall capabilities provide an additional layer of security, safeguarding sensitive data from potential threats and unauthorized access.

The NBR-220, on the other hand, is designed for cost-effective solutions without compromising on essential functionalities. This device supports simple plug-and-play installation, making it user-friendly for organizations that may not have an extensive IT infrastructure. The NBR-220 includes features such as VLAN support, allowing for network segmentation and increased security. Its scalability means that it can grow alongside an organization's needs, accommodating future expansions efficiently. The device's ability to support multiple network topologies ensures versatility in deployment, catering to various business requirements.

Finally, the NBR-420 is a versatile networking solution that combines the best elements of the previous models but with enhanced features suitable for demanding enterprise environments. It includes advanced quality of service (QoS) capabilities, ensuring that critical applications receive the bandwidth they require for optimal performance. With support for IPv6, the NBR-420 prepares businesses for the future of networking as the world transitions more towards this next-generation internet protocol. Additionally, its built-in diagnostics tools facilitate easy monitoring and management of network performance.

In summary, Cabletron Systems' NBR-620, NBR-220, and NBR-420 offer diverse solutions tailored for modern networking needs. Each model encompasses unique features and technologies that cater to various business sizes and requirements, focusing on performance, scalability, and security. As businesses continue to evolve in a digital-first world, these devices play a crucial role in facilitating seamless network operations.