HP 12500 Series Command Reference Manual page 58

historical port role calculation information on all cards of all member devices in the IRF fabric. (In
IRF mode.)
Usage guidelines
In STP or RSTP mode, the displayed information is sorted by port role calculation time.
In MSTP mode:
If you do not specify any MSTI, this command displays the historical port role calculation
•
information for all MSTIs. The displayed information is sorted by MSTI ID and by port role
calculation time in each MSTI.
If you specify an MSTI, this command displays the historical port role calculation information
•
for the specified MSTI by the sequence of port role calculation time.
Examples
# (In standalone mode.) In MSTP mode, display the historical port role calculation information for
the card on slot 3 in MSTI 2.
<Sysname> display stp instance 2 history slot 3
--------------- STP slot 3 history trace ---------------
-------------------
Port GigabitEthernet3/0/1
Role change
Time
Port priority : 0.00e0-fc01-6510 0 0.00e0-fc01-6510 128.1
Port GigabitEthernet3/0/2
Role change
Time
Port priority : 0.00e0-fc01-6510 0 0.00e0-fc01-6510 128.2 128.153
# (In IRF mode.) In MSTP mode, display the historical port role calculation information for the card
on slot 3 of IRF member device 1 in MSTI 2.
<Sysname> display stp instance 2 history chassis 1 slot 3
---------- STP chassis 1 slot 3 history trace --------
-------------------
Port GigabitEthernet1/3/0/1
Role change
Time
Port priority : 0.00e0-fc01-6510 0 0.00e0-fc01-6510 128.1
Port GigabitEthernet1/3/0/2
Role change
Time
Port priority : 0.00e0-fc01-6510 0 0.00e0-fc01-6510 128.2 128.153
Table 16 Command output
Field
Port
Role change
Time
Port priority
Instance 2 ---------------------
: ROOT->DESI (Aged)
: 2009/02/08 00:22:56
: ALTER->ROOT
: 2009/02/08 00:22:56
Instance 2 ---------------------
: ROOT->DESI (Aged)
: 2009/02/08 00:22:56
: ALTER->ROOT
: 2009/02/08 00:22:56
Description
Port name.
Role change of the port ("Age" means that the change was caused by expiration
of the received configuration BPDU).
Time of port role calculation.
Port priority.
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