Disconnecting The Eps-C/Eps-600Ls; Eps-150Dc External Power Module (With Eps-T2) - Extreme Networks Summit X150 Series Hardware Installation Manual

Chapter 2: Summit Power Supplies

Disconnecting the EPS-C/EPS-600LS

To manually disconnect an EPS-C or to remove the EPS-600LS modules, the recommended practice is to
disconnect the EPS-600LS modules one at a time, pausing two seconds after each EPS-600LS disconnect.
This enables a graceful power transition from the external power supplies to the internal power supply.
Example: Two active EPS-600LS modules in an EPS-C
a Unplug one EPS-600LS unit from its power source.
PoE power is automatically reduced to 370 watts and the internal switch power supply is
enabled, providing redundant 370 watt PoE power.
b Wait at least two seconds before disconnecting the remaining EPS-600LS unit.
c Unplug the second EPS-600LS unit from its power source.
The internal power supply is already enabled and provides uninterrupted 370 watts of PoE
power.
NOTE
After an EPS-600LS unit is disconnected from its power source, it may be removed from the EPS-C.
See "Removing an EPS-600LS Power Module" on page 352
d Disconnect the EPS-C from the switch.

EPS-150DC External Power Module (with EPS-T2)

The EPS-150DC External Power Module (Model 10909) is a modular power supply for use in the EPS-T2
External Power System Tray. You can use the EPS-150DC as a redundant power supply with the
following Extreme Networks switches:
Summit X250e-24tDC switch
●
Summit X250e-24xDC switch
●
Summit X250e-48tDC switch
●
Summit X450a-24tDC switch
●
Summit X450a-24xDC switch
●
Summit X450a-48tDC switch
●
When this power supply is used with one of the listed Summit switches, the internal and external
power supplies are fully fault tolerant and load-sharing. If one power supply fails, the other power
supply will provide sufficient power to operate the switch.
The EPS-T2 is a rack-mountable chassis or tray that holds one or two EPS-150DC power supplies. Each
EPS-150DC provides one-to-one redundancy to an attached Extreme switch. You must install the
EPS-150DC power supply in the EPS-T2 tray.
The front panel of the EPS-150DC unit has a green LED to indicate operating status
Table 44: LED Meanings on the EPS-150DC Power Supply
Power LED Meaning
Green, solid The external power module is operating normally.
Off The external power module is not connected.
146
for disconnection and removal instructions.
Summit Family Switches Hardware Installation Guide
(Table 44).