Cisco Catalyst 3120 Command Reference Guide

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Cisco Catalyst Blade Switch 3120 for HP Command Reference
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Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commands
show spanning-tree
This is an example of output from the show spanning-tree mst configuration command:
Switch# show spanning-tree mst configuration
Name [region1]
Revision 1
Instance Vlans Mapped
-------- ------------------
0 1-9,21-4094
1 10-20
----------------------------
This is an example of output from the show spanning-tree mst interface interface-id command:
Switch# show spanning-tree mst interface gigabitethernet2/0/1
GigabitEthernet2/0/1 of MST00 is root forwarding
Edge port: no (default) port guard : none (default)
Link type: point-to-point (auto) bpdu filter: disable (default)
Boundary : boundary (STP) bpdu guard : disable (default)
Bpdus sent 5, received 74
Instance role state cost prio vlans mapped
0 root FWD 200000 128 1,12,14-4094
This is an example of output from the show spanning-tree mst 0 command:
Switch# show spanning-tree mst 0
###### MST00 vlans mapped: 1-9,21-4094
Bridge address 0002.4b29.7a00 priority 32768 (32768 sysid 0)
Root address 0001.4297.e000 priority 32768 (32768 sysid 0)
port Gi1/0/1 path cost 200038
IST master *this switch
Operational hello time 2, forward delay 15, max age 20, max hops 20
Configured hello time 2, forward delay 15, max age 20, max hops 20
Interface role state cost prio type
-------------------- ---- ----- --------- ---- --------------------------------
GigabitEthernet2/0/1 root FWD 200000 128 P2P bound(STP)
GigabitEthernet2/0/2 desg FWD 200000 128 P2P bound(STP)
Port-channel1 desg FWD 200000 128 P2P bound(STP)
Related Commands Command Description
clear spanning-tree counters Clears the spanning-tree counters.
clear spanning-tree detected-protocols Restarts the protocol migration process.
spanning-tree backbonefast Enables the BackboneFast feature.
spanning-tree bpdufilter Prevents an interface from sending or receiving bridge
protocol data units (BPDUs).
spanning-tree bpduguard Puts an interface in the error-disabled state when it
receives a BPDU.
spanning-tree cost Sets the path cost for spanning-tree calculations.
spanning-tree extend system-id Enables the extended system ID feature.
spanning-tree guard Enables the root guard or the loop guard feature for all the
VLANs associated with the selected interface.
spanning-tree link-type Overrides the default link-type setting for rapid
spanning-tree transitions to the forwarding state.

Cisco Catalyst 3120 Specifications

General

Brand	Cisco
Model	Catalyst 3120
Category	Switch
Language	English