Spanning Tree Protocol (STP and RSTP) Introduction
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Software Reference for SwitchBlade x3100 Series Switches (Layer Two Switching)
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4.5.3.19 Reset STP
The spanning tree algorithm can be recalculated at any time, and all timers and counters be initialized, using the
command RESET STP.
4.5.3.20 (R)STP and VLAN Interaction
Since STP is a port-based topology and VLAN is a logic-based topology (over a physical port), the user needs to
understand how these two work together so that the blocked links that are part of (R)STP convergence do not
have unintended consequences for the VLANs that are carried over these ports.
Note: With the MSTP feature, there can be an additional (R)STP instance based on a (set of) VLANs.
However, the configuration rules listed here should be understood first, since they apply to
understanding the MSTP instances.
Refer to the following figure, which shows an (R)STP topology in which two physical links are blocked and two
VLANs are configured.
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