Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide - Manual (Page 307)

CLI display of show spanning-tree 802.1W (Continued) TABLE 50
Field Description
AdminP2PMac Indicates if the point-to-point-mac parameter is configured to be a point-to-point link:
• T - The link is a point-to-point link
• F - The link is not a point-to-point link. This is the default.
DesignatedPriority Shows the following:
• Root - Shows the ID of the root bridge for this bridge.
• Bridge - Shows the ID of the Designated bridge that is associated with this port.
ActiveTimers Shows what timers are currently active on this port and the number of seconds they have
before they expire:
• rrWhile - Recent root timer. A non-zero value means that the port has recently been a
Root port.
• rcvdInfoWhile - Received information timer. Shows the time remaining before the
information held by this port expires (ages out). This timer is initialized with the effective
age parameter. (Refer to the Max Age field in the
Table 49 .)
• rbWhile - Recent backup timer. A non-zero value means that the port has recently been a
Backup port.
• helloWhen - Hello period timer. The value shown is the amount of time between hello
messages.
• tcWhile - Topology change timer. The value shown is the interval when topology change
notices can be propagated on this port.
• fdWhile - Forward delay timer.
• mdelayWhile - Migration delay timer. The amount of time that a bridge on the same LAN
has to synchronize its migration state with this port before another BPDU type can cause
this port to change the BPDU that it transmits.
Machine States The current states of the various state machines on the port:
• PIM - State of the Port Information state machine.
• PRT - State of the Port Role Transition state machine.
• PST - State of the Port State Transition state machine.
• TCM - State of the Topology Change state machine.
• PPM - State of the Port Protocol Migration.
• PTX - State of the Port Transmit state machine.
Refer to the "Port Role Selection state machines" section in Changes to port roles and states
on page 277 for details on state machines.
Received Shows the number of BPDU types the port has received:
• RST BPDU - BPDU in 802.1W format.
• Config BPDU - Legacy configuration BPDU (802.1D format).
• TCN BPDU - Legacy topology change BPDU (802.1D format).
802.1W Draft 3
As an alternative to full 802.1W, you can configure 802.1W Draft 3. 802.1W Draft 3 provides a subset of
the RSTP capabilities described in the 802.1W STP specification.
802.1W Draft 3
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