Root Guard; Rapid Pvst - Cisco WS-C4507R Troubleshooting Manual

RST-3508
9805_05_2004_c2
RST-3508
9805_05_2004_c2
© 2004 Cisco Systems, Inc. All rights reserved. Printed in USA.
Presentation_ID.scr
Trunk Troubleshooting
cat4500#sh int fa3/19 trunk
Port Mode Encapsulation
Fa3/19 on 802.1q
Port Vlans allowed on trunk
Fa3/19 1-4094
Port Vlans allowed and active in management domain
Fa3/19 1-3,10,41,49-50,100-102,104
Port Vlans in spanning tree forwarding state and not pruned
Fa3/19 1-3,10,41,49-50,100-102,104
cat4500#
Name: Fa0/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
© 2004 Cisco Systems, Inc. All rights reserved.
Spanning Tree Support
Cisco Catalyst OS and Cisco IOS
Supervisor STP Support
802.1d Spanning Tree
•
802.1d PVST
•
Uplink Fast
•
Backbone Fast
•
802.1w(RST)/802.1s(MST)
•

Rapid PVST+

•
© 2004 Cisco Systems, Inc. All rights reserved.
cat4500#sh run int fa3/19
Building configuration...
Status Native vlan
trunking 1 Current configuration : 95 bytes
!
interface FastEthernet3/19
switchport trunk encapsulation dot1q
switchport mode trunk
end
Useful for STP Optimization Prune
Unneeded VLANs
show interface fast 0/1 switchport
Port fast
•
Port fast BPDU Guard
•
Port fast BPDU Filter
•

Root Guard

•
UDLD
•
Check Operational State
57 57 57
58 58 58