Specifications

Optimizing Performance
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Rapid Spanning Tree Protocol (RSTP)
Recommendations
Schneider Electric recommends these practices:
z Use RSTP instead of STP. RSTP provides a faster recovery time than STP.
NOTE: Recovery time is the elapsed time between the moment a loss of service
is detected and the moment network service is restored. Recovery time depends
on:
z number of switches: Higher numbers of switches in the topology result in
higher recovery times.
z switch speed: Switches in the topology with slower processing speeds result
in longer recovery times.
z bandwidth
z traffic load
z topology pattern
z Enable RSTP when the switch is part of a topology with redundant physical paths.
z Disable RSTP when the switch is part of a topology that does not include
redundant physical paths. Disabling RSTP in this situation can improve network
performance.
z When you configure a daisy chain loop topology, the Max Age of the root bridge
must be set to the number of nodes in the loop plus 1. That is, a loop with 21
nodes should have a Max Age of at least 22.