RGPS-92222GCP-NP Series User Manual
ORing Industrial Networking Corp.
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4.4 STP/RSTP/MSTP
4.4.1
STP/RSTP
STP (Spanning Tree Protocol), and its advanced versions RSTP (Rapid Spanning Tree
Protocol) and MSTP (Multiple Spanning Tree Protocol), are designed to prevent network loops
and provide network redundancy. Network loops occur frequently in large networks as when
two or more paths run to the same destination, broadcast packets may get in to an infinite loop
and hence causing congestion in the network. STP can identify the best path to the destination,
and block all other paths. The blocked links will stay connected but inactive. When the best
path fails, the blocked links will be activated. Compared to STP which recovers a link in 30 to
50 seconds, RSTP can shorten the time to 5 to 6 seconds. In other words, RSTP provides
faster spanning tree convergence after a topology changes. The switch supports STP and will
auto detect the connected device running on STP or RSTP protocols.
RSTP Bridge Setting
