Connectivity Guide

Table Of Contents
Command Mode CONFIGURATION
Usage Information None
Example
OS10(config)# spanning-tree vlan 1 root primary
Supported Releases 10.2.0E or later
Rapid Spanning-Tree Protocol
Rapid Spanning-Tree Protocol (RSTP) is similar to STP, but provides faster convergence and interoperability with devices congured with
STP and MSTP. RSTP is disabled by default. All enabled interfaces in L2 mode automatically add to the RSTP topology.
Conguring RSTP is a two-step process:
1 Ensure that the interfaces are in L2 mode.
2 Globally enable RSTP.
Enable globally
RSTP enables STP on all physical and port-channel interfaces which are in L2 mode to automatically include the interfaces as part of the
RSTP topology. Only one path from a bridge to any other bridge is enabled. Bridges block a redundant path by disabling one of the link
ports.
Congure Spanning-Tree mode to RSTP in CONFIGURATION mode.
spanning-tree mode rstp
Disable RSTP globally for all L2 interfaces in CONFIGURATION mode.
spanning-tree disable
Remove an interface from the RSTP topology in INTERFACE mode.
spanning-tree disable
Re-enable an interface in INTERFACE mode.
no spanning-tree disable
Re-enable RSTP globally for all L2 interfaces in CONFIGURATION mode.
no spanning-tree disable
Layer 2
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