Juniper JUNOS OS 10.3 - SOFTWARE, Manual

Page: 1655 / 3946

Maximum age : 20 seconds
Forward delay : 15 seconds
Local parameters
Bridge ID : 4097.00:19:e2:50:51:e0
Extended system ID : 0
Internal instance ID : 1
STP bridge parameters for MSTI 2
MSTI regional root : 4098.00:19:e2:50:3d:20
Root cost : 1000
Root port : ge-0/0/28.0
Hello time : 2 seconds
Maximum age : 20 seconds
Forward delay : 15 seconds
Hop count : 19
Local parameters
Bridge ID : 16386.00:19:e2:50:51:e0
Extended system ID : 0
Internal instance ID : 2
Meaning The operational mode command
show spanning-tree interface
displays spanning-tree
domain information such as the designated port and the port roles.
The operational mode command
show spanning-tree bridge
displays the spanning-tree
domain information at either the bridge level or interface level. If the optional interface
name is omitted, all interfaces in the spanning-tree domain are displayed.
Verifying MSTP Configuration on Switch 4
Purpose Verify the MSTP configuration on Switch 4.
Action Use the operational mode commands:
user@switch4> show spanning-tree interface
Spanning tree interface parameters for instance 0
Interface Port ID Designated Designated Port State Role
port ID bridge ID Cost
ge-0/0/23.0 128:523 128:517 8192.0019e25051e0 1000 FWD ROOT
ge-0/0/19.0 128:525 128:525 16384.0019e25040e0 1000 FWD DESG
Spanning tree interface parameters for instance 1
Interface Port ID Designated Designated Port State Role
port ID bridge ID Cost
ge-0/0/23.0 128:523 128:517 4097.0019e25051e0 1000 FWD ROOT
ge-0/0/19.0 128:525 128:525 16385.0019e25040e0 1000 FWD DESG
Spanning tree interface parameters for instance 2
Interface Port ID Designated Designated Port State Role
port ID bridge ID Cost
ge-0/0/23.0 128:523 128:517 16386.0019e25051e0 1000 BLK ALT
ge-0/0/19.0 128:525 128:527 8194.0019e25044e0 1000 FWD ROOT
user@switch4>
show spanning-tree bridge
1559 Copyright © 2010, Juniper Networks, Inc.
Chapter 65: Examples of Spanning-Tree Protocols Configuration