| Message Code | PIX-7-715072 |
| Severity | Debugging |
| Description | Received proposal with unknown protocol ID protocol_ID |
| Explanation | Received an IPSec SA proposal with unknown protocol ID. This proposal will be skipped. |
| User Action | Generally, this is a benign condition but could indicate that a peer is non-conforming. If the problem persists and prevents peers from negotiating a tunnel successfully, then copy the error message exactly as it appears on the console or in the system log, contact the Cisco Technical Assistance Center (TAC) for further support and provide the gathered information. |
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