Safety Information
Extreme Networks Consolidated ExtremeXOS Hardware Installation Guide
374
LAN Systems
This equipment is intended for intra-building. Intra-building connections are defined as cable runs that are located
in the same building as the unit.
This equipment can be connected between buildings if one of the following requirements are met:
● Cable runs between buildings are less then 140 feet long.
● Cable runs between buildings are directly buried.
● Cable runs between buildings are in an underground conduit, where a continuous metallic cable
shield or a continuous metallic conduit containing the cable is bonded to each building grounding
electrode system.
PoE Devices
When connecting power over Ethernet (PoE) devices to a PoE switch, all connections between the PoE
device and the switch must remain inside the same building and use a low-voltage power distribution
system per IEEE 802.3af.
Uninterruptible Power Supply Requirements
An uninterruptible power supply (UPS) is a device that sits between a power supply (such as a wall
outlet) and a device (such as a switch) to prevent outages, sags, surges, and bad harmonics from
adversely affecting the performance of the device.
UPS Features
A UPS traditionally can perform the following functions:
● Absorb relatively small power surges.
● Smooth out noisy power sources.
● Continue to provide power to equipment during line sags.
● Provide power for some time after a blackout has occurred.
In addition, some UPS or UPS plus software combinations provide the following functions:
● Automatically shut down equipment during long power outages.
● Monitor and log power supply status.
● Display the voltage (current draw) of the equipment.
● Restart equipment after a long power outage.
● Display the voltage currently on the line.
● Provide alarms on certain error conditions.
● Provide short circuit protection.
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