Method, device and medium for determining operations performed on a packet

摘要

A system for tracing operations executed by a network device on a packet wherein a network device may capture a packet and determine whether the packet is a candidate for tracing; if the packet is a candidate for tracing the network device may set a trace option identifier within the packet indicating that the packet is to be tagged in association with operations performed on or in association with the packet by the network device. The network device may tag the packet with one or more tags in response to the trace option identifier, export the packet with the trace option identifier, generate a report based on the tags and send the report to a network management station.

主权项

1. A method, comprising:
capturing, by a processing device, a packet at an ingress port of the processing device; determining, by the processing device, whether the packet is a candidate for tracing; setting, by the processing device, a trace option identifier within the packet indicating that the packet is selected for tagging when operations are performed by on the packet by the processing device; when performing an operation on the packet, determining whether the packet includes the trace option identifier; in response to determining that the packet includes the trace option identifier, adding, by the processing device, corresponding a tag to the packet based on the trace option identifier to indicate the operation performed on the packet; upon at least one of reaching an egress port of the processing device or being dropped by an operation of the processing device, removing the packet from a forwarding path; and generating, by the processing device, a report based on the tag that automatically correlates the tag with a corresponding entry in configuration information stored in the processing device; wherein the captured packet includes DSCP bits.