Hi Team,
Iam having problem with trunk link bw rourt and switch, am getting this messages on router.
Jan 11 11:34:48.765 MST: %DTP-5-TRUNKPORTON: Port Fa2 has become dot1q trunk
Jan 11 11:34:48.893 MST: %DTP-5-NONTRUNKPORTON: Port Fa2 has become non-trunk
Jan 11 11:34:50.873 MST: %DTP-5-TRUNKPORTON: Port Fa2 has become dot1q trunk
Jan 11 11:34:51.065 MST: %DTP-5-NONTRUNKPORTON: Port Fa2 has become non-trunk
Jan 11 11:34:52.381 MST: %LINK-3-UPDOWN: Interface FastEthernet2, changed state to up
Router config:
interface FastEthernet2
description connection to c3560-1a1.u71006 switch
switchport trunk allowed vlan 1-4,99,100,195,199,1002-1005
switchport mode trunk
switchport protected
end
version
Cisco IOS Software, C181X Software (C181X-ADVIPSERVICESK9-M), Version 12.4(24)T1, RELEASE SOFTWARE (fc3)
ROM: System Bootstrap, Version 12.3(8r)YH5, RELEASE SOFTWARE (fc1)
System image file is "flash:c181x-advipservicesk9-mz.124-24.T1.bin"
q71006lan1#sh int f2 switchport
Name: Fa2
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1-4,99,100,195,199,1002-1005
Trunking VLANs Active: 1-4,99-100,195,199
Protected: true
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
Swich config:
interface FastEthernet0/24
description uplink to q71006lan1 router
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-4,99,100,195,199,1002-1005
switchport mode trunk
switchport nonegotiate
switchport protected
logging event trunk-status
logging event spanning-tree
end
c3560-1a1# sh int f0/24 switchport
Name: Fa0/24
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: 1-4,99,100,195,199,1002-1005
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: true
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
Regards,
Satya.M
