METHOD AND DEVICE FOR CONFIRMING IN-SITU FLOW INFORMATION TELEMETRY CAPABILITY

Disclosed are a method for confirming an in-situ flow information telemetry iFIT capability and a device. The method includes: A first network device sends a request packet to a second network device or a network management device, where the request packet is used to request to confirm whether the second network device has an iFIT capability; and the first network device receives a confirmation packet sent by the second network device or the network management device, where the confirmation packet includes confirmation information used to confirm whether the second network device has the iFIT capability. The method can ensure that a data packet including iFIT information is sent to the second network device only when the second network device has the iFIT capability, to resolve a packet loss problem caused by lack of the iFIT capability of the network device.