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

Claim 2:
3. The system of claim 2, wherein the upstream router is a first upstream router, wherein the computer-readable media is further configured to cause the one or more processors to perform acts comprising:
receiving, at the first upstream router, the instruction to start monitoring incoming traffic;
monitoring, by the first upstream router, incoming traffic of the multicast data flow being received at the first upstream router from a second upstream router of the multicast data flow;
at least partly in response to determining that an expected amount of the incoming traffic of the multicast data flow is being received at the first upstream router from the second upstream router, transmitting, by the first upstream router and to the network administrator device, a message indicating a network fault is occurring at a location of the first upstream router in the multicast data flow; and
at least partly in response to determining that an expected amount of the incoming traffic of the multicast data flow is not being received at the first upstream router from the second upstream router, sending, by the first upstream router and to the second upstream router, an instruction to start monitoring incoming traffic of the multicast data flow.