Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual page 1987

show spanning-tree show spanning-tree
interface interface
Copyright © 2010, Juniper Networks, Inc.
Table 263: show spanning-tree Interface Output Fields (continued)
Field Name
Designated port ID
Designated bridge ID
Port Cost
Port State
Port Role
Link type
Alternate
Boundary Port
user@host> show spanning-tree interface routing-instance vs1 detail
Spanning tree interface parameters for instance 0
Interface Port ID
ae1 128:1
ge-2/1/2 128:2
ge-2/1/5 128:3
ge-2/2/1 128:4
xe-9/2/0 128:5
xe-9/3/0 128:6
Spanning tree interface parameters for instance 1
Interface Port ID
ae1 128:1
ge-2/1/2 128:2
ge-2/1/5 128:3
ge-2/2/1 128:4
xe-9/2/0 128:5
xe-9/3/0 128:6
Spanning tree interface parameters for instance 2
Interface Port ID
ae1 128:1
ge-2/1/2 128:2
Chapter 75: Operational Commands for Spanning-Tree Protocols
Field Description
Port ID of the designated port for the LAN segment to which this
interface is attached.
Bridge ID of the designated bridge for the LAN segment to which
this interface is attached.
Configured cost for the interface.
STP port state: forwarding (
FWD
or disabled.
MSTP, VSTP, or RSTP port role: designated (
alternate ( ), root, or Root Prevented (
ALT
MSTP, VSTP, or RSTP link type. Shared or point-to-point (pt-pt)
and edge or nonedge.
Identifies the interface as an MSTP, VSTP, or RSTP alternate root
port ( Yes ) or nonalternate root port (
Identifies the interface as an MSTP regional boundary port (
nonboundary port ( No ).
Designated Designated
port ID bridge ID
128:1 32768.0090690b47d1
128:2 32768.0090690b47d1
128:3 32768.0090690b47d1
128:26 32768.0013c39ec880
128:5 32768.0090690b47d1
128:6 32768.0090690b47d1
Designated Designated
port ID bridge ID
128:1 32769.0090690b47d1
128:2 32769.0090690b47d1
128:3 32769.0090690b47d1
128:26 32769.0013c39ec880
128:5 32769.0090690b47d1
128:6 32769.0090690b47d1
Designated Designated
port ID bridge ID
128:1 32770.0090690b47d1
128:2 32770.0090690b47d1
), blocking ( ), listening, learning,
BLK
), backup (
DESG BKUP
).
Root-Prev
No ).
Yes
Port State Role
Cost
1000 FWD DESG
20000 FWD DESG
29999 FWD DESG
20000 FWD ROOT
2000 FWD DESG
2000 FWD DESG
Port State Role
Cost
1000 FWD DESG
20000 FWD DESG
29999 FWD DESG
20000 FWD ROOT
2000 FWD DESG
2000 FWD DESG
Port State Role
Cost
1000 FWD DESG
20000 FWD DESG
),
) or
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