Avaya 882 Manuel D’Utilisation
1-4
User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1
Chapter 1
Switch Fabric
In Fabric mode 1, the switching fabric provides 45.76 Gbps aggregate
bandwidth. In Fabric mode 2 (P580 only), the switching fabric provides
54.91 Gbps aggregate bandwidth.
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 (
switching using a crossbar architecture (
).
Figure 1-1. Crossbar Architecture
The crossbar supports:
■
13 fabric ports (two per I/O module slot, one for the supervisor
module).
module).
■
1.76 Gbps (in and out) on each fabric port in 50-series mode and
2.11 Gbps (in and out) on each fabric port in Fabric mode 2.
2.11 Gbps (in and out) on each fabric port in Fabric mode 2.
■
45.76 Gbps backplane capacity in Fabric mode 1 and 54.91 Gbps
backplane capacity in Fabric mode 2.
backplane capacity in Fabric mode 2.
■
Under-subscribed switching fabric in most configurations.
■
Single copy replication—Input frames destined for multiple output
switch ports pass through the crossbar only once and are copied by
the crossbar to each destination.
switch ports pass through the crossbar only once and are copied by
the crossbar to each destination.
■
Hardware-assisted multicast pruning—The switch only forwards to
appropriate destination switch ports.
appropriate destination switch ports.
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