Extensive Fault Tolerance - Avaya 580 User Manual

Chapter 1

Extensive Fault Tolerance

1-18
Dual-Layer Spanning Tree
Global Disable
For more information about Spanning Tree, see
Rapid Spanning Tree."
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
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
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
Redundancy Options."
User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1
Chapter 7,
Chapter 8, "Configuring
Chapter 12, "Configuring IP
Chapter 10,
"Configuring
Routing."
"Configuring