Spanning Tree Protocol Modes - Lenovo RackSwitch G8264 Application Manual

Spanning Tree Protocol Modes

188
G8264 Application Guide for ENOS 8.4
Lenovo Enterprise Network Operating System 8.4 supports the following STP
modes:
 Rapid Spanning Tree Protocol (RSTP)
IEEE 802.1D (2004) RSTP allows devices to detect and eliminate logical loops in
a bridged or switched network. When multiple paths exist, STP configures the
network so that only the most efficient path is used. If that path fails, STP
automatically configures the best alternative active path on the network to
sustain network operations. RSTP is an enhanced version of IEEE 802.1D (1998)
STP, providing more rapid convergence of the Spanning Tree network path
states on STG 1.
See "Rapid Spanning Tree Protocol" on page
 Per‐VLAN Rapid Spanning Tree (PVRST)
PVRST mode is based on RSTP to provide rapid Spanning Tree convergence, but
supports instances of Spanning Tree, allowing one STG per VLAN. PVRST
mode is compatible with Cisco R‐PVST/R‐PVST+ mode.
PVRST is the default Spanning Tree mode on the G8264. See "PVRST Mode" on
page 189 for details.
Multiple Spanning Tree Protocol (MSTP)

IEEE 802.1Q (2003) MSTP provides both rapid convergence and load balancing
in a VLAN environment. MSTP allows multiple STGs, with multiple VLANs in
each.
See "Multiple Spanning Tree Protocol" on page
202 for details.
204 for details.