CHAPTER 2
INSTALLATION REQUIREMENTS/
SPECIFICATIONS
Before you attempt to install Cabletron Systems' NB20E or NB25E Two Port Ethernet Bridge, review the location and hardware requirements outlined in this chapter. Also refer to the operating specifications and environmental requirements that are listed.
All conditions, guidelines, specifications and requirements included in this chapter must be met to ensure satisfactory performance of the NB20E or NB25E. Failure to follow these guidelines will result in unsatisfactory network performance.
2.1LOCATION REQUIREMENTS
Before installing the NB20E or NB25E Two Port Ethernet Bridge, ensure that the location for the bridge meets the following requirements:
•The location must have an unrestricted surface area 21 inches (53.34 cm) wide, and must be at least 18 inches (45.72 cm) deep and 6 inches (15.24 cm) high.
•A standard 3 prong power receptacle must be located within 7 feet (2.13 m) of the site.
•If a shelving unit is to be used, the unit must be able to support 30 pounds (13.6 kg) of static weight.
•The temperature of the location must be maintained between 5° and 40°C. Temperature changes of greater than 10°C per hour must not occur.
2.2NETWORK REQUIREMENTS
When bridging two segments using an NB20E or NB25E Two Port Bridge, you must follow the network guidelines listed below:
•The transceivers to which the NB20E or NB25E will be connected must meet Ethernet Version 1, Version 2, or IEEE 802.3 standards.
•The AUI cables connecting the NB20E or NB25E to the transceivers on the network must be IEEE 802.3 type cables and must not exceed 50 meters in length.
