System Power Scenarios - Alcatel-Lucent OmniSwitch 6850E Series Hardware User's Manual

OmniSwitch BPS Operation
OmniSwitch BPS Scenarios
The tables below describe scenarios that can be seen when using the OS-BPS and what the expected
behavior will be based on the mode of the OS-BPS.

System Power Scenarios

System P/S Scenario
No System power on OS-
BPS.
One system power
supply in OS-BPS while
primary power supply is
in use.
Two system power
supplies in OS- BPS
while primary power
supply is in use.
Removal of a stack
element
Adding a stack element
with OS-BPS in use and
one system power
supply.
Adding a stack element
with OS-BPS in use and
two system power
supplies.
Power over Ethernet Scenarios
PoE P/S Scenario
No PoE power available
on OS-BPS.
A PoE power supply is
added to the OS-BPS
when the primary power
supply is in use.
A PoE power supply is
added when OS-BPS is
in use.
Removal of a stack
element
Addition of a stack
element with OS-BPS in
use.
page 4-28
Single (N+1) Mode
No redundant system power available. No redundant system power available.
Up to 4 switches can be supported.
Up to 8 switches can be supported.
No change
If 4 or less switches then there is no
change. If 5 or more switches then the
system power will shut down.
New element powered on.
Single (N+1) Mode
Redundant PoE power will not be
available. PoE will drop upon failure
of a primary power supply.
No immediate change but more PoE
power will be available if a primary
power supply fails.
No immediate change but more PoE
power will be available if a primary
power supply fails.
No change
If new PoE power requirement is
greater than available PoE power then
PoE will be shut down.
OmniSwitch Backup Power Shelf/System (BPS)
OmniSwitch Backup Power Shelf/System (BPS)
Full (N+N) Mode
Connectors 1-4 will be enabled and
ready to provide redundant power.
Connectors 5-8 will be enabled and
ready to supply redundant power.
No change
Connectors 1-4 will be enabled,
switches connected to 5-8 will not be
powered up.
New element powered on.
Full (N+N) Mode
Redundant PoE power will not be
available. PoE will drop upon failure
of a primary power supply.
Amount of managed PoE power
available will be increased.
Amount of managed PoE power
available will be increased.
Amount of managed PoE power
available will be increased.
Amount of managed PoE power
available will be decreased and PoE
will be shut down based on connector
priority if required.
January 2013