HP 12500 Series Command Reference Manual page 49

If you specify a port list, this command displays the spanning tree information for the
•
specified ports. The displayed information is sorted by port name.
In MSTP mode:
If you do not specify any MSTI or port, this command displays the spanning tree information
•
of all MSTIs on all ports. The displayed information is sorted by MSTI ID and by port name in
each MSTI.
If you specify an MSTI but not a port, this command displays the spanning tree information on
•
all ports in that MSTI. The displayed information is sorted by port name.
If you specify some ports but not an MSTI, this command displays the spanning tree
•
information of all MSTIs on the specified ports. The displayed information is sorted by MSTI ID
and by port name in each MSTI.
If you specify both an MSTI ID and a port list, this command displays the spanning tree
•
information on the specified ports in the specified MSTI. The displayed information is sorted
by port name.
Examples
# In MSTP mode, display the brief spanning tree status and statistics of MSTI 0 on ports
GigabitEthernet 3/0/1 through GigabitEthernet 3/0/4.
<Sysname> display stp instance 0 interface GigabitEthernet 3/0/1 to GigabitEthernet 3/0/4
brief
MSTID
0
0
0
0
Table 11 Command output
Field
MSTID
Port
Role
STP State
Port
GigabitEthernet3/0/1
GigabitEthernet3/0/2
GigabitEthernet3/0/3
GigabitEthernet3/0/4
Role STP State
ALTE DISCARDING
DESI FORWARDING
DESI FORWARDING
DESI FORWARDING
Description
MSTI ID in the MST region.
Port name, corresponding to each MSTI or VLAN.
Port role:
•
ALTE—The port is an alternate port.
• BACK—The port is a backup port.
• ROOT—The port is a root port.
•
DESI—The port is a designated port.
•
MAST—The port is a master port.
•
DISA—The port is disabled.
Spanning tree status on the port:
• FORWARDING—The port can receive and send BPDUs and also
forward user traffic.
•
DISCARDING—The port can receive and send BPDUs but
cannot forward user traffic.
•
LEARNING—The port is in a transitional state. It can receive
and send BPDUs but cannot forward user traffic.
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Protection
LOOP
NONE
NONE
NONE