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Problem with Port channel

I have 2 6500 (one is a WS-C6509-E and the other is a WS-C6509). I try to connect between them in port channel with 2 connection in gigaethernet...But i have received this error:

Mar 19 11:49:42: %STANDBY-3-DUPADDR: Duplicate address 192.168.104.29 on Vlan699, sourced by 0000.0c07.acc5

Mar 19 11:50:12: %STANDBY-6-STATECHANGE: Standby: 40: Vlan40 state Standby -> Active

Mar 19 11:50:12: %STANDBY-3-DUPADDR: Duplicate address 192.168.104.29 on Vlan699, sourced by 0000.0c07.acc5

Mar 19 11:50:18: %STANDBY-6-STATECHANGE: Standby: 89: Vlan509 state Standby -> Active

Mar 19 11:50:19: %STANDBY-6-STATECHANGE: Standby: 89: Vlan509 state Active -> Speak

Mar 19 11:50:19: %STANDBY-6-STATECHANGE: Standby: 64: Vlan64 state Standby -> Active

Mar 19 11:50:20: %STANDBY-6-STATECHANGE: Standby: 50: Vlan50 state Standby -> Active

Mar 19 11:50:20: %STANDBY-6-STATECHANGE: Standby: 200: Vlan21 state Standby -> Active

Mar 19 11:50:20: %STANDBY-6-STATECHANGE: Standby: 64: Vlan64 state Active -> Speak

Mar 19 11:50:22: %STANDBY-6-STATECHANGE: Standby: 50: Vlan50 state Active -> Speak

Mar 19 11:50:24: %STANDBY-6-STATECHANGE: Standby: 200: Vlan21 state Active -> Speak2007 Mar 19 04:45:20 PDT -07:00 %SPANTREE-2-CHNMISCFG: STP loop - channel 5/1,6/1 is disabled in vlan/instance 699

2007 Mar 19 04:45:20 PDT -07:00 %SPANTREE-2-CHNMISCFG2: BPDU source mac addresses: 00-15-c6-2f-df-a8, 00-0e-38-c4-10-10

2007 Mar 19 04:45:21 PDT -07:00 %ETHC-5-PORTFROMSTP:Port 6/1 left bridge port 5/1,6/1

2007 Mar 19 04:45:21 PDT -07:00 %ETHC-5-PORTFROMSTP:Port 5/1 left bridge port 5/1,6/1

May you help me?

thank you very much.

Alberto Bigi.

2 REPLIES
Hall of Fame Super Blue

Re: Problem with Port channel

Hi

Looks like there might well be something wrong with your Etherchannel configuration. Have a look at the following document which describes how to troubleshoot an etherchannel issue:

http://www.cisco.com/en/US/tech/tk389/tk213/technologies_tech_note09186a008009448d.shtml

HTH

Jon

Re: Problem with Port channel

Hi

may be u need to check u r STP topology.Check for any loops.

Thanks

Mahmood

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