| Message Code | PIX-6-199003 |
| Severity | Information |
| Description | Reducing link MTU dec. |
| Explanation | The Cisco ASA received a packet from the outside network that uses a larger MTU than the inside network. The Cisco ASA then sent an ICMP message to the outside host to negotiate an appropriate MTU. The log message includes the sequence number of the ICMP message. |
| User Action | None required. |
| Reference Links |
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