Cisco Systems, Inc.
Discovering and mitigating MTU/fragmentation issues in a computer network

Abstract:

In one embodiment, a maximum transmission unit (MTU) mismatch assessment service receives a notification of a mismatch between a packet size of a packet sent by a source to a destination in a network and an MTU of an intermediate router between the source and destination in the network. The service determines, using a machine learning-based model, that the mismatch represents a persistent MTU mismatch condition at the intermediate router. The service identifies a target router in the network to receive a configuration adjustment instruction, based on the persistent MTU mismatch condition. The service sends the configuration adjustment instruction to the target router, to alleviate the persistent MTU mismatch condition at the intermediate router.