Avaya P580 - Manual (Page 32)

1-4 Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1
Chapter 1
Fan Tray
There are two fan assemblies in the chassis. One fan assembly is
located on the left side of the chassis to provide air flow to the media
modules. This fan assembly is hot-swappable. The other fan
assembly is located in the rear of the chassis to provide air flow to
the switch fabric. This fan assembly is not field replaceable.
Power Supplies
Only two power supplies are required to operate a fully-loaded
P550R/P580 chassis. A third power supply can be installed to
provide backup should one of the other two fail.
The power subsystem provides N+1 power supply redundancy. In
addition, the installed power supplies will load share between the
installed units. The power supplies are also warm swappable (power
supplies must be turned off and unplugged before removing them
from the chassis, however the other power supplies can remain on)
The P580 chassis supports both AC and DC power supplies. The
P550R chassis supports only AC power supplies.
Switch Fabric
In Fabric mode 1 (P550R and P580), the switching fabric provides
45.76 Gbps aggregate bandwidth. In Fabric mode 2 (P580 only), the
switching fabric provides 54.91 Gbps aggregate bandwidth.
The crossbar switch matrix provides low latency, high throughput
packet switching using a crossbar architecture (Figure 1-1).
Figure 1-1. Crossbar Architecture
Crossbar
Port 1
Port 2
Port 13
1.76 Gb/s
22.88 Gb/s
Port 1
Port 2
Port 13
1.76 Gb/s 45.76 Gb/s