bridge spanningTree stpState 259
bridge spanningTree
✓ 3500
✓ 9000
✓ 9400
✓ 3900
✓ 9300
stpState
Enables or disables the Spanning Tree Protocol (STP) on your system.
Valid Minimum Abbreviation
b sp stps
Important Considerations
■The state of STP is configured in two places: the entire bridge (this
command) and individual bridge ports. (See Chapter10.) The
combination of the states determines the forwarding behavior of each
port, as shown in the following table:
■After you enable STP, the system takes several seconds to process the
command before the Administration Console menu reappears.
■Although bridge-wide STP is initially disabled, def ault values exist for
the following STP bridge parameters: priority, max age, hello time,
forward delay, and group address. These values do not function until
STP is enabled.
■CoreBuilder® 3500 and CoreBuilder 9000 Layer 3 modules include an
ignore STP mode option. See Chapter 14 in this guide or see your
system Implementation Guide for more information.
■Bridge-wide STP must be disabled on a CoreBuilder 9400 switch if you
configure it as a MultiPoint Link Aggregation (MPLA) core switch. For
more information about MPLA, see the CoreBuilder 9400
Implementation Guide.
Bridge STP State Port STP State
Port Participates
in STP?
Port Forwards
Frames?
Disabled Disabled No Yes, if link state is up.
Enabled No Yes, if link state is up.
Removed No Yes, if link state is up.
Enabled Disabled No No
Enabled Yes Determined by STP,
provided that the link
state is up.
Removed No Yes, if link state is up.