Help with an unknown Error-message

[mkoopsen]

Hello all,

Can anybody help me with the following error-message that appears from time to time in my syslogfile? I have searched the whole internet for an explanation.

Sep 25 02:38:42 as5300-3 4028: Sep 25 02:38:41: %LINK-3-BOGUSENCAP: Interface Serial2:7, bad encapsulation in idb->enctype = 0x30

Thanks,

Martijn Koopsen

[mljohnson]

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122sup/122sems/semsvol1/emflcfe.htm#xtocid13

It would be interesting to see the config and the version being used, as well as how often you are seeing the message. Are there any other messages immediately before or after this one?

[mkoopsen]

Currently i am running 12-1-16 IP version.

I asked if i could send a config but the company policy prohibits it. But i can tell you that the config is very staightforward.... No fancy stuff.

I thought it had something to do with the autodetect encapsulation command you can set on the serial interfaces but what i did ......it sure did not work.

The message is there approxiamately every 10th caller......There is however no relationship between for example analog/isdn and the error........... But the calls were not connected if the error came along.

Another odd thing was that the person that dialed in.......did not get connection.....tried again.......and there was success.

The only thing i could find was that if the callload went up the problem pooped up.

There are no other messages before or after.......

[mljohnson]

I really don't see any mention of this message in the last 18 months, so this could be a new issue. I would suggest you open a case with the TAC, include the serial config (if possible), the version, and the logged messages, so that this can be further pursued. I can't say right now what the cause is, what a workaround may be, or what the effect (aside from a failed call) is.