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Upper Level Protocol

Getting the following on a Gig interface on my 9006 Router doing a

sho int gig<interface>

268562 drops for unrecognized upper-level protocol

Now i know what upper level protocol can be, like IPv6, CDP or something else that we or the other side have not configured to handle.  

The question is, how do I find out what is actually causing the drops?  What type of protocol?

thanks
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marchopkins
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marchopkins
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nociSoftware EngineerCommented:
Are you aware of this article? I have a feeling you do, if not read it first as it describes your situation.
https://supportforums.cisco.com/document/59521/asr9000xr-drops-unrecognized-upper-level-protocol-error

If you have no idea what happens then your best angle of attack is to hook up wireshark on a copy port, and see what packets pass by when the counters increase. And make sure that settings are setup as appropriate either on the 9006 or the adjacent device.

Wireshark: http://www.wireshark.org/
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marchopkinsAuthor Commented:
Yes, I am aware of the article.  I was looking for a possible command on the 9006 that might show me what packets/protocols are coming in on the interface.  Is there such a command?  I will do the packet capture if need be.
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nociSoftware EngineerCommented:
No there are no such commands that i know of.
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marchopkinsAuthor Commented:
Thanks so much for the precise commenting on my issue.  The feedback will be acted upon.
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