Stp Bridge And Port Parameters; Bridge-Wide Stp Parameters; Bridge-Wide Stp State - 3Com 4007 Implementation Manual

STP Bridge and Port
Parameters
Bridge-wide STP
Parameters
Default
On any switching module, if you want to use STP, you must first enable it
on a bridge-wide basis and then on a per-port basis. This section
describes the parameters that you can modify and their implications for
your network.
On Layer 2 Switching Modules, even if you do not want to use STP, you
may want to configure the
spanningtree stpState
module's ability to accelerate address aging in certain circumstances. See
"MAC Address Table Design" and "Address Aging" in this chapter for
more information.
You can modify these STP bridge-wide parameter at any times:

Bridge-wide STP state

Bridge priority
Bridge maximum age
Bridge hello time
STP group address
See the Switch 4007 Command Reference Guide for value ranges and
defaults for these parameters, as well as definitions of fields in the
displays.
Bridge-Wide STP State
You can set the bridge-wide STP state to one of these options:
Enabled — This setting allows any bridge port on the module to run
STP, as long as it too has STP enabled. The bridge-wide STP state is
enabled by default on all modules.
Disabled — The module operates as a store-and-forward bridge, but
cannot participate in the STP algorithm. Thus, the STP settings on
individual bridge ports have no effect either.
Aging Only (Layer 2 Switching Modules only) — STP is disabled
with this setting, however an accelerated address aging process will
occur when the module detects a port link down event. (This is a
process that also occurs when STP is enabled.)
To understand how the bridge-wide STP state options affect address
aging, see "Address Aging" in this chapter.

STP Bridge and Port Parameters

option that exists in the
agingOnly
command — this setting relates to the
183
bridge