Typically, when a service provider carries customer multicast traffic over a core network, it is often carried over a tunnel, which are often aggregated. There are many reasons for aggregated tunnel use, such as issues of scale and/or hardware limitations. While aggregated tunnels can be useful for carrying multicast traffic, it can be difficult to monitor network health when tunnels are aggregated. Techniques of this proposal provide for the ability to monitor network health by supporting per-flow counters for aggregated tunnels for both Internet Protocol (IP) version 4 and version 6 (IPv4/IPv6) traffic in a manner that is scalable and can be provided on-demand.
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Mishra, Mankamana; Kumar, Ashok; Santhanam, Sridhar; Asati, Rajiv; and Kumar, Nitin, "MULTICAST VIRTUAL PRIVATE NETWORK PER-FLOW MONITORING FOR AN AGGREGATED TUNNEL IN A MULTIPROTOCOL LABEL SWITCHING CORE", Technical Disclosure Commons, (June 30, 2021)