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New Member

Cisco Router 2911 has unknown protocol drops issue

Hi all,

I have issues to connect Cisco 2911 to HP switch. I disable CDP on the LAN port, router at A end is ok, but the unknow protocal drops as same as before at B site. It happend around every 30sec. When I transfer a file from one end to the other end. It always disconnect every 25 second. HP Switch is not configure trunk as it work as a plain network

Any other issues is possible?

Everyone's tags (3)
3 REPLIES
Hall of Fame Super Gold

Cisco Router 2911 has unknown protocol drops issue

Unknow protocol drops normal. thye are the SPT packets from switch, and are not the cause of your problem.

New Member

Cisco Router 2911 has unknown protocol drops issue

Hi Paolo,

Thanks for the reply, but my issue is package seems dropped when we try to transfer file from PC A to B. When we check router, only this error shows. And two site are using same switch and same config. Only Site B shows this error, site A is fine. Except this issue, is there any other things i should try to troubleshoot?

Thanks

Hall of Fame Super Gold

Cisco Router 2911 has unknown protocol drops issue

Hi, recommend you engage a reputable consultant, or certified Cisco partner, or Cisco TAC to help you resolve this issue.

Otherwise you have to provide a lot more data / evinde tof the problem.

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