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Spanning Tree Bridge Parameter Defaults
Configuring Spanning Tree Parameters
page 6-4
OmniSwitch AOS Release 7 Network Configuration Guide
June 2013
Spanning Tree Bridge Parameter Defaults
Spanning Tree Port Parameter Defaults
Parameter Description
Command
Default
Spanning Tree operating mode
Per-VLAN (a separate Spanning
Tree instance for each VLAN)
PVST+ status
Disabled
Spanning Tree status for a
VLAN instance
Enabled
Spanning Tree protocol
RSTP (802.1w)
BPDU switching status
Disabled
Priority value for the Spanning
Tree instance
32768
Hello time interval between each
BPDU transmission
2 seconds
Maximum aging time allowed
for Spanning Tree information
learned from the network
20 seconds
Spanning Tree port state transi-
tion time
15 seconds
Path cost mode
Auto (16-bit in per-VLAN mode
and STP or RSTP flat mode, 32-
bit in MSTP flat mode)
Automatic VLAN Containment
spantree auto-vlan-containment
Disabled
Parameter Description Command
Default
Status for a specific VLAN instance
Enabled
Path cost for a specific VLAN instance
0
Port state management mode
spantree cist mode
spantree vlan mode
Dynamic (Spanning Tree
Algorithm determines port
state)
Port priority value
7
Port connection type for a specific
VLAN instance
auto point to point
Type of BPDU to be used on a port when
per vlan PVST+ mode is enabled
auto (IEEE BPDUs are used
until a PVST+ BPDU is
detected)