Alcatel-Lucent OmniSwitch 6860 Series

Configuring Spanning Tree Parameters Spanning Tree Bridge Parameter Defaults
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 6-3
Spanning Tree Bridge Parameter Defaults
Spanning Tree Port Parameter Defaults
Parameter Description Command Default
Spanning Tree operating mode spantree mode Per-VLAN (a separate Spanning
Tree instance for each VLAN)
PVST+ status spantree pvst+compatibility Disabled
Spanning Tree status for a
VLAN instance
spantree vlan admin-state Enabled
Spanning Tree protocol spantree protocol RSTP (802.1w)
BPDU switching status spantree bpdu-switching Disabled
Priority value for the Spanning
Tree instance
spantree priority 32768
Hello time interval between each
BPDU transmission
spantree hello-time 2 seconds
Maximum aging time allowed
for Spanning Tree information
learned from the network
spantree max-age 20 seconds
Spanning Tree port state
transition time
spantree forward-delay 15 seconds
Path cost mode spantree 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
Spanning Tree loop-guard spantree loop-guard Disabled
Parameter Description Command Default
Status for a specific VLAN instance spantree vlan Enabled
Path cost for a specific VLAN instance spantree vlan path-cost 0
Port state management mode spantree cist mode
spantree loop-guard
Dynamic (Spanning Tree
Algorithm determines port
state)
Port priority value spantree priority 7
Port connection type for a specific
VLAN instance
spantree vlan connection auto point to point
Type of BPDU to be used on a port when
per vlan PVST+ mode is enabled
spantree
pvst+compatibility
auto (IEEE BPDUs are used
until a PVST+ BPDU is
detected)