XG Series User's Guide
Chapter 5 Command Reference
Bridge Counter, Log, Statistics, and Status Display and Clear Operation
Commands
477
Display of spanning tree information of the specified interface
1)
Interface name and port status
One of the following is displayed for the port status.
Disabled
: The STP is disabled.
Discarding
: The port is in the discarding state (it is displayed only when
RSTP or MSTP is active).
Blocking
: The port is in the blocking state.
Listening
: The port is in the listening state.
Learning
: The port is in the learning state.
Forwarding
: The port is in the forwarding state.
2)
STP version of port
One of the following is displayed for the STP version.
- (OFF)
: STP unused port
0 (STP)
: 802.1d STP
2 (RSTP)
: 802.1w RSTP
3 (MSTP)
: 802.1s MSTP
3)
Port path cost
The path cost of the relevant port is displayed.
4)
Port priority
The priority of the relevant port is displayed.
5)
Port ID
The port ID (the port priority and port number) is displayed.
# show spanning-tree interface 1
eth1 is Forwarding Port Version 0(STP)
------------------ -------------------
(1) (2)
Port path cost 200000(auto), Port priority 128, Port Identifier 128.1
--------------------------- ----------------- ----------------------
(3) (4) (5)
Port role is Root
-----------------
(6)
Designated root has priority 32768, address 00:00:e2:08:57:89
---------------------------------- -------------------------
(7) (8)
Designated bridge has priority 32768, address 00:00:e2:08:57:89
------------------------------------ -------------------------
(9) (10)
Designated port id is 128.1, Designated path cost 0
--------------------------- -----------------------
(11) (12)
BPDU statistics:
Config BPDU: sent 3, sent error 0
------ ------------
(13) (14)
received 112, discarded 0
------------- -----------
(15) (16)
TCN BPDU: sent 2, sent error 0
------ ------------
(17) (18)
received 0, discarded 0
---------- -----------
(19) (20)
Other error: bad protocol 0, bad version 0
-------------- -------------
(21) (22)
bad BPDU type 0
---------------
(23)