What is TTL scoping ?
Every Internet Protocol Packet has a Time To Live (TTL) field, which despite the name is really a count of the number of hops (transmission from one router to the next) the packet is allowed. The TTL field is decremented by one each time a packet leaves a router, and a packet with a TTL of zero is discarded. Although the TTL field was implemented to prevent packets from looping forever in the network, the TTL field can be set low to prevent packets from leaving a particular domain. The problem with TTL scoping is that the hop-distance to the edge of a network or domain from a given source may not uniform, and so it may not be possible to both service the entire domain with multicast traffic and prevent that traffic from leaking to other domains, no matter what TTL value is chosen. • What is Administrative Scoping ? Administrative scoping is the restriction of multicast transport based on the address range of the multicast group. It is defined by RFC 2365. Administrative scoping is rest
