Cabletron Systems NB20E - Manual (Page 15)

2-1
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.
2.1 LOCATION 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.
2.2 NETWORK 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.