Avaya Cajun P580, User Manual, Page: 44 / 770

1-18 User Guide for the Avaya P580 and P882 Multiservice Switches, v6.0
Chapter 1
■
Dual-Layer Spanning Tree
■
Global Disable
For more information about Spanning Tree, see Chapter 7 , “ Configuring
Rapid Spanning Tree .”
Extensive Fault Tolerance
All multiservice switches are designed to function as backbone switches.
You can install each switch in your network’s core without creating a single
point of failure.
Extensive fault tolerance features include:
■
Port redundancy. If the primary port fails, the secondary port
becomes the active port. Failover time is less than 5 seconds. For
information on port redundancy, see
Chapter 8 , “ Configuring Ports .”
■
VRRP. Virtual Router Redundancy Protocol (VRRP) is used to
provide fast-fail over for hosts if the default gateway fails. For
information on VRRP, see
Chapter 12 , “ Configuring IP Routing .”
■
N+1 power. Power supplies share the power supply load. If one
fails, the remaining supplie(s) assume the load automatically and the
switch management system warns of the failure.
■
Hot-swappable fans and modules—Each fan and module can be
changed from the switch front panel, without powering down the
switch.
■
Redundant switch links (using spanning tree and hunt groups).
■
Front-loadable cables, modules, power supplies and fans.
■
Redundant switch element and switch controller modules (fault-
tolerant switches only).
■
Redundant supervisor modules.
For more information hardware redundancy, see Chapter 10 , “ Configuring
Redundancy Options .”
Routing Protocols
The P580 and P882 support the following routing protocols:
■
IRDP. For information on IRDP, see Chapter 12 , “ Configuring IP
Routing .”