01-28-2008 08:12 PM - edited 03-05-2019 08:46 PM
Hi,
Currently I'm working on 2 6500 (let say, C6506 & C6509) and try to configure etherchannel between those two.
C6506 is using WS-X6724-SFP, connecting to C6509 via WS-X6816-GBIC.
If there is only 1 cable on the bundle, the port-channel is up and working properly. But when the second or third cable is join the bundle, the C6506 will generate error message:
PM-4-ERR_DISABLE: Channel-misconfig error detected on [chars], putting [chars] in err-disable state.
And the interface will went into "down" state.
I have checked both switches for misconfig, but can't found any.
The configuration is as follow:
interface <interface-id>
Switchport
Switchport trunk encapsulation dot1q
Switchport mode trunk
channel-group 1 mode on
interface port-channel 1
Switchport
Switchport trunk encapsulation dot1q
Switchport mode trunk
C6509 running native IOS 12.1(13)E6.
C6506 running native IOS 12.2(18)SXE6.
I tried different combination on both switches, ON/ON, ACTIVE/PASSIVE, DESIRABLE/AUTO. Nothing worked.
The last thing is instead of connecting to C6509/WS-X6816-GBIC, I'm using GBIC on Supervisor (same switch, WS-X6K-S2U-MSFC2) and it worked. But the thing is using Supervisor GBIC I can only achieve max 2GB on the bundle.
Please help me solving this, and Thanks.
01-28-2008 08:39 PM
Hi
Pls go through the below link..
and check if all these conditions are met 4 u..
arun
01-29-2008 06:39 PM
Hi Arun,
I have check all the necessary conditions for etherchannel, and everything are met.
But one thing, I haven't try is to hardcode duplex setting on both interfaces, currently they are running default duplex setting. I'm afraid that the default duplex setting between 6816-GBIC & SFP is different.
Adi
01-29-2008 07:44 AM
Check using "show monitor" to make sure none of the ports in the Etherchannel is not a member of any SPAN session.
01-29-2008 06:40 PM
Hi Yi,
I have issue the show monitor before and none of the ports are member of SPAN.
Adi
01-29-2008 04:24 PM
Take them down and then bring them all up at the same time with the interface range command and see what happens or do a shut on the int portchannel 1 interface and then do a no shut .
01-29-2008 06:43 PM
Hi Glen,
Yes, i have tried to shut/no shut the interface at the same time none of them worked, I suspect that the default duplex setting between line cards is different, I'm going to try hardcode the duplex setting.
Adi
01-30-2008 01:24 AM
could you post here the configuration of all 4 ports and the exactly syslog messages which you see?
the most usual problem is the different VLAN list or differnt native VLAN.
if you suspect the speed/dupley mistmatch then try to configure them manually.
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