The %MLS_STAT-SP-4-IP_LEN_ERR: MAC/IP length inconsistencies error message indicates the receipt of packets whose IP length does not match the MAC length. The Supervisor Engine drops these packets. These packet drops do not cause any negative effects on the switch. The switch reports the error message for informational purposes.
This problem occurs when a device on the network sends out bad packets. These are some of the causes of bad packets:
Bad NIC drivers
To resolve this issue, perform one of these procedures:
Procedure 1: Sniff out the traffic to locate the source of errant packets, and eliminate that traffic source. To achieve this, create a SPAN session for the module number.
Procedure 2: Perform these steps on the affected switch:
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