Cisco Catalyst 2960 Series User Manual

spanning-tree portfast network
end
This example shows the output for show spanning-tree vlan
Switch# show spanning-tree vlan
Sep 17 09:51:36.370 PDT: %SYS-5-CONFIG_I: Configured from console by console2
VLAN0002
Spanning tree enabled protocol rstp
Root ID Priority 2
Address 7010.5c9c.5200
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 2 (priority 0 sys-id-ext 2)
Address 7010.5c9c.5200
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 0 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/1 Desg FWD 4 128.1 P2p Edge
Po4 Desg FWD 3 128.480 P2p Network
Gi4/0/1 Desg FWD 4 128.169 P2p Edge
Gi4/0/47 Desg FWD 4 128.215 P2p Network
Switch#
Example: Configuring Bridge Assurance
This output shows port GigabitEthernet 1/0/1 has been configured as a network port and it is currently in the
Bridge Assurance inconsistent state.
The output shows the port type as network and *BA_Inc, indicating that the port is in an inconsistent state.Note
Switch# show spanning-tree
VLAN0010
Spanning tree enabled protocol rstp
Root ID Priority 32778
Address 0002.172c.f400
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32778 (priority 32768 sys-id-ext 10)
Address 0002.172c.f400
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio. Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi1/0/1 Desg BKN*4 128.270 Network, P2p *BA_Inc
The example shows the output for show spanning-tree summary.
Switch#sh spanning-tree summary
Switch is in rapid-pvst mode
Root bridge for: VLAN0001-VLAN0002, VLAN0128
EtherChannel misconfig guard is enabled
Extended system ID is enabled
Portfast Default is network
Portfast Edge BPDU Guard Default is disabled
Portfast Edge BPDU Filter Default is disabled
Loopguard Default is enabled
PVST Simulation Default is enabled but inactive in rapid-pvst mode
Bridge Assurance is enabled
UplinkFast is disabled
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
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Examples

Cisco Catalyst 2960 Series Specifications

General

Layer	Layer 2
Power over Ethernet (PoE)	Available on some models
RAM	128 MB
Flash Memory	32 MB
MAC Address Table Size	8000
Operating Temperature	0°C to 45°C (32 to 113°F)
Ports	24 or 48 x 10/100/1000