Preparing the NBR for Installation

3.2.2 Setting Mode Switches

Never adjust switch settings while the NBR has power applied to it. Not only is this dangerous, but the change in position activates the switch function and after you reinstall or power cycle the NBR it will initiate the request.

Figure 3-2 shows the location and factory default settings of the mode switches. Check these switches to ensure that they are in the correct position for normal NBR operation.

Switch definitions are as follows:

Switch 1 - Cabletron Systems use only.

Switch 2 - Cabletron Systems use only.

Switch 3 - Cabletron Systems use only.

Switch 4 - Cabletron Systems use only.

Switch 5 - Baud Rate Default. Allows you to set the Console port baud rate. The OFF position sets the baud rate to 9600. The ON position sets the baud rate to 2400. The default position is OFF.

!

CAUTION

Do not change the state of Switch 6 unless the following conditions exist:

You have a station acting as a BOOTP server, and a TFTP server that contains the NBR image file. The BOOTP server and the TFTP server could be different servers.

You intend to set up a station to act as a BOOTP server for the NBR.

Switch 6 - Forced Download. Changing the state of this switch (i.e., moving the switch from one position to another) forces the NBR to download an image file from the station acting as the TFTP server.

NBR-SERIES Installation Guide

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Cabletron Systems NBR-220, NBR-420, NBR-620 manual Setting Mode Switches

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.