Configuring Multiple Spanning Trees 22

CLI – This displays STA settings for instance 1, followed by settings for each port.

Console#show spanning-tree

mst 1

51-18

Spanning-tree information

 

 

---------------------------------------------------------------

Spanning tree mode:

 

MSTP

Spanning tree enabled/disabled:

enabled

Instance:

 

1

VLANs configuration:

 

1

Priority:

 

32768

Bridge Hello Time (sec.):

 

2

Bridge Max Age (sec.):

 

20

Bridge Forward Delay (sec.):

15

Root Hello Time (sec.):

 

2

Root Max Age (sec.):

 

20

Root Forward Delay (sec.):

 

15

Max hops:

 

20

Remaining hops:

 

20

Designated Root:

 

32768.1.0030F1D473A0

Current root port:

 

7

Current root cost:

 

10000

Number of topology changes:

2

Last topology changes time (sec.):85

Transmission limit:

 

3

Path Cost Method:

 

long

 

---------------------------------------------------------------

Eth 1/ 7 information

 

 

---------------------------------------------------------------

Admin status:

enabled

 

Role:

master

 

State:

forwarding

External admin path cost:

10000

 

Internal admin path cost:

10000

 

External oper path cost:

10000

 

Internal oper path cost:

10000

 

Priority:

128

 

Designated cost:

0

 

Designated port:

128.1

 

Designated root:

32768.1.0030F1D473A0

Designated bridge:

32768.1.0030F1D473A0

Fast forwarding:

disabled

 

Forward transitions:

1

 

Admin edge port:

disabled

 

Oper edge port:

disabled

 

Admin Link type:

auto

 

Oper Link type:

point-to-point

.Spanning Tree Status:

enabled

 

.

 

 

.

 

 

CLI – This example sets the priority for MSTI 1, and adds VLANs 1-5 to this MSTI.

Console(config)#spanning-tree mst-configuration

51-7

Console(config-mst)#mst 1 priority 4096

51-9

Console(config-mstp)#mst 1 vlan 1-5

51-8

Console(config-mst)#

 

 

 

22-17

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