Juniper Networks EX8208 manual +N Redundancy Configuration of AC Power Supplies

Chapter 2: Component Descriptions

Table 18: N+1 Power Redundancy Configurations for Different EX8208

Switch Configurations Using 3000 W AC Power Supplies

Switch		Power Supplies	Power Supplies
Configuration	Input Voltage	Needed (N)	Needed for N+1
Base	High-voltage line	1	2
	(200–240 VAC)
Fully loaded with	High-voltage line	2	3
8-port SFP+ line	(200–240 VAC)
cards

Table 19: N+1 Power Redundancy Configurations for Different EX8216

Switch Configurations Using 2000 W AC Power Supplies

Switch		Power Supplies	Power Supplies
Configuration	Input Voltage	Needed (N)	Needed for N+1
Base	High-voltage line	2	3
	(200–240 VAC)
	Low-voltage line	2	3
	(100–120 VAC)
Fully loaded with	High-voltage line	5	6
8-port SFP+ line	(200–240 VAC)
cards
	Low-voltage line	Not supported	Not supported
	(100–120 VAC)

Table 20: N+1 Power Redundancy Configurations for Different EX8216

Switch Configurations Using 3000 W AC Power Supplies

Switch		Power Supplies	Power Supplies
Configuration	Input Voltage	Needed (N)	Needed for N+1
Base	High-voltage line	1	2
	(200–240 VAC)
Fully loaded with	High-voltage line	4	5
8-port SFP+ line	(200–240 VAC)
cards

N+N Redundancy Configuration of AC Power Supplies

You can optionally configure your switch for N+N redundancy, in which N power supplies can be removed or fail and the remaining N power supplies continue to supply power for the switch without interruption. A common application for N+N redundancy is to have a dual power feed for AC power supplies.

How many power supplies you require for N+N redundancy can depend on which Junos OS Release your switch is running:

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