Juniper EX9200 Features Manual page 117

Meaning
Purpose
Action
Copyright © 2017, Juniper Networks, Inc.
The operational mode command
domain information such as the designated port and the port roles. Switch 3 is the root
bridge for instance 0, which is the CIST, as well as for instance 1. In both instances, all
ports on Switch 3 are designated ports.
The operational mode command
domain information at either the bridge level or the interface level. If the optional interface
name is omitted, all interfaces in the spanning-tree domain are displayed.
Verifying MSTP Configuration on Switch 4
Verify the MSTP configuration on Switch 4.
Issue the operational mode commands show spanning-tree interface and show
spanning-tree bridge:
user@switch4> show spanning-tree interface
Spanning tree interface parameters for instance 0
Interface Port ID
ge-0/0/23 128:523
ge-0/0/19 128:525
Spanning tree interface parameters for instance 1
Interface Port ID
ge-0/0/23 128:523
ge-0/0/19 128:525
Spanning tree interface parameters for instance 2
Interface Port ID
ge-0/0/23 128:523
ge-0/0/19 128:525
user@switch4> show spanning-tree bridge
STP bridge parameters
Context ID
Enabled protocol
STP bridge parameters for CIST
Root ID
Root cost
Root port
CIST regional root
CIST internal root cost
Hello time
Maximum age
Forward delay
Hop count
Message age
show spanning-tree interface
show spanning-tree bridge
Designated Designated
port ID bridge ID
128:517 8192.0019e25051e0
128:525 16384.0019e25040e0
Designated Designated
port ID bridge ID
128:517 4096.0019e25051e0
128:525 16384.0019e25040e0
Designated Designated
port ID bridge ID
128:517 16384.0019e25051e0
128:527 8192.0019e25044e0
: 0
: MSTP
: 8192.00:19:e2:50:51:e0
: 0
: ge-0/0/23
: 8192.00:19:e2:50:51:e0
: 1000
: 2 seconds
: 20 seconds
: 15 seconds
: 19
: 0
Chapter 4: Using MSTP
displays spanning-tree
displays the spanning-tree
Port State Role
Cost
1000 FWD ROOT
1000 FWD DESG
Port State Role
Cost
1000 FWD ROOT
1000 FWD DESG
Port State Role
Cost
1000 BLK ALT
1000 FWD ROOT
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