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### Instruction:
ELMI-4-RELIABILITY_INVALID_SEQ_NUM
### Response:
(Severity: 4), (Category: L2), (Description: The sequence number received does not match the last sequence number sent. This indicates that the last PDU sent to the peer device was not received.), (Recommended Action: Check that E-LMI is configured on the peer device and that the link to the peer device is functionining correctly. If the message recurs, 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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