HP 5900 series Command Reference Manual page 102

Usage guidelines
In STP or RSTP mode:
If you do not specify any port, this command displays the spanning tree information for all ports.
•
The displayed information is sorted by port name.
• 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
Ten-GigabitEthernet 1/0/1 through Ten-GigabitEthernet 1/0/4.
<Sysname> display stp instance 0 interface ten-gigabitethernet 1/0/1 to
ten-gigabitethernet 1/0/4 brief
MSTID
0
0
0
0
Table 21 Command output
Field
MSTID
Port
Role
Port
Ten-GigabitEthernet1/0/1
Ten-GigabitEthernet1/0/2
Ten-GigabitEthernet1/0/3
Ten-GigabitEthernet1/0/4
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.
95
Role STP State
ALTE DISCARDING
DESI FORWARDING
DESI FORWARDING
DESI FORWARDING
Protection
LOOP
NONE
NONE
NONE