Spanning Tree Port Parameter Defaults Configuring Spanning Tree Parameters
page 7-4 OmniSwitch 6800/6850/9000 Network Configuration Guide March 2008
Spanning Tree Port Parameter Defaults
Multiple Spanning Tree (MST) Region Defaults
Although the following parameter values are specific to MSTP, they are configurable regardless of which
mode (flat or 1x1) or protocol is active on the switch.
Capability of 1X1 mode to inter-
operate with Cisco’s PVST+
mode.
bridge mode 1x1 pvst+ disabled
Parameter Description Command Default
Spanning Tree port administrative state bridge slot/port Enabled
Spanning Tree port priority value bridge slot/port priority 7
Spanning Tree port path cost bridge slot/port path cost 0 (cost is based on port speed)
Path cost mode bridge path cost mode Auto (16-bit in 1x1 mode and
STP or RSTP flat mode, 32-bit
in MSTP flat mode)
Port state management mode bridge slot/port mode Dynamic (Spanning Tree Algo-
rithm determines port state)
Type of port connection bridge slot/port connection auto point to point
Type of BPDU to be used on a port when
the 1X1 mode is configured to interoper-
ate with Cisco’s PVST+ mode.
bridge port pvst+ auto
Parameter Description Command Default
The MST region name bridge mst region name blank
The revision level for the MST region bridge mst region revision
level
0
The maximum number of hops autho-
rized for the region
bridge mst region max
hops
20
The number of Multiple Spanning Tree
Instances (MSTI)
bridge msti 1 (flat mode instance)
The VLAN to MSTI mapping bridge msti vlan All VLANs are mapped to the
Common Internal Spanning
Tree (CIST) instance
Parameter Description Command Default
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