Patent ID: 11949597
Assignee: CISCO TECHNOLOGY, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The system of claim 1 further comprising:
monitoring, by the last hop router, incoming traffic of the multicast data flow being received at the last hop router from the upstream router of the multicast data flow for a predetermined amount of time;
determining, by the last hop router, that an expected amount of incoming traffic during the predetermined amount of time is being received at the last hop router from the upstream router; and
at least partly in response to determining that the last hop router is receiving the expected amount of incoming traffic of the multicast data flow, transmitting, by the last hop router and to the network administrator device, a message indicating a network fault is occurring at the location of the last hop router in the multicast data flow.