Design Reference

Chapter 6: Platform redundancy
This section includes recommendations to provide a fault tolerant platform.
Power redundancy
The Avaya VSP 4850GTS-PWR+ model supports dual 54V 1000W Power over Ethernet Plus
(PoE+) AC power supplies. This model supports two external field replaceable power supplies.
You can install a secondary power supply to provide redundancy, load sharing, and add Power
over Ethernet Plus (PoE+) power budget on PWR+ models.
The 1000W AC power supplies use an IEC 60320 C16 AC power cord connector. The AC
power cord is in close proximity to the hot air exhaust, and supports high operating
temperatures.
Table 9: Power over Ethernet Plus specifications
Model Maximum PoE+ W Average PoE+ W on 50 port models
Avaya VSP 4850GTS
— PWR+ models
• 855W with one power
supply
• 1855W with two power
supplies
• 15.4W (802.3af)
• 17.8W (802.3.at) — 1 power supply
• 32.4W (802.3at) — 2 power
supplies
The VSP 4850GTS-PWR+ can support 802.3af 15.4W on each port with one power supply
installed. PoE+ power reduces to an average of 17.8W on each port with one power supply.
It can support 802.3at 32.4W on each port with two power supplies installed.
Important:
Avaya recommends that power supplies use the same input voltage. Do not operate the
chassis with power supplies under different input voltage conditions. The product can
function but Avaya does not support this configuration.
Network Design Reference for Avaya VSP 4000 February 2014 33