Configuring layer 2 EtherChannel

From: Ben Malik (souldjab@yahoo.com)
Date: Mon May 29 2006 - 12:02:10 ART


Can someone tell me what I am doing wrong here? I am trying to accomplish lab1 in CCIE practical studies volume2.
  Anytime I do the following configuration:
   
  Interface FastEthernet0/1
   switchport trunk encapsulation dot1q
   switchport mode trunk
   channel-group 1 mode on
  !
  interface FastEthernet0/2
   switchport trunk encapsulation dot1q
   switchport mode trunk
   channel-group 1 mode on
   
  I get the following errors message:
   
  17:59:05: %STANDBY-3-DUPADDR: Duplicate address 172.16.200.16 on Vlan200, sourced by 0000.0c07.acc8
  17:59:29: %PM-4-ERR_DISABLE: channel-misconfig error detected on Po1, putting Fa0/1 in err-disable state
  17:59:30: %PM-4-ERR_DISABLE: channel-misconfig error detected on Po1, putting Fa0/2 in err-disable state
  17:59:30: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down
  17:59:31: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/2, changed state to down
  17:59:31: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to down
  17:59:31: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan2, changed state to down
  17:59:32: %LINK-3-UPDOWN: Interface FastEthernet0/1, changed state to down
  17:59:32: %LINK-3-UPDOWN: Interface Port-channel1, changed state to down
  17:59:32: %LINK-3-UPDOWN: Interface FastEthernet0/2, changed state to down
   
  I am using one CAT 3550 and 2950.
  I shut one port either F0/1 or F0/2 I get no errors and everything work fine.
  Any advice will be appreciated.
   
  Thanks,
   
  Soul
   
   
   

                
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