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### Instruction:
ISIS-4-IM_CAPS_UNKNOWN
### Response:
(Severity: 4), (Category: ROUTING), (Description: IS-IS has received an IM message referring to a capsulation number that IS-IS does not recognized and is not able to handle. This is an internal programming error.), (Recommended Action: Copy the error message exactly as it appears on the console or in the system log, call your Cisco technical support representative and provide the representative with the gathered information.)
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