Avaya 580 사용자 설명서

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User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1
Chapter 1
Dual-Layer Spanning Tree 
Global Disable
For more information about Spanning Tree, see 
, “
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 
, “
.” 
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 
.”