Avaya 8308XL, Planning And Engineering

Page: 24 / 44

Determining the number of AC power supplies
For the Ethernet Routing Switch 8306 and 8310 chassis, the number of power supplies that
you must install—1, 2, or 3—depends on the following parameters:
• number of modules you install in the chassis
• Power over Ethernet (PoE) requirements
• requirement for an optional redundant power supply
Caution:
When you install and run PoE modules, the 8306 or 8310 chassis cannot contain various
power supply types. All power supplies in the chassis must be of the same type (Ethernet
Routing Switch 8301AC or 8302AC power supplies). Otherwise, all PoE (8348TX-PWR,
8348GTX-PWR) modules lose PoE power when the chassis detects mixed power
supplies.
The following table lists the number of 8301AC or 8302AC power supplies you can install based
on the number of modules you install and your power supply redundancy choice.
Table 1: Recommended number of 8301AC or 8302AC power supplies to install
Chassis Number of modules Number of 8301AC or 8302AC power
supplies
Required Redundant
configuration
8306 1-6 1 2
8310 1-6 1 2
7-10 2 3
If a power supply fails after you install a redundant power supply, the Ethernet Routing Switch
8300 continues to operate with no service interruption. The chassis will continue to supply the
same module and PoE output power with the remaining power supplies. A trap and syslog
message indicates that the configuration is nonredundant.
Avaya recommends that you operate the Ethernet Routing Switch 8300 in a redundant
configuration at all times to ensure maximum network uptime.
Avaya recommends that you install each power supply on its own dedicated branch circuit.
When you plug the power cord for each power supply into a separate AC circuit, the redundant
power supply also provides protection against the disconnection or failure of an individual
branch circuit or power supply failure.
The following table lists the available system power for the 8306 and 8310 chassis.
Power considerations
24 Planning and Engineering — Power Considerations May 2011