This test is intended to test prune and join functionality among GateD PIM Dense Mode routers on multiaccess LANs. This includes handling of prune messages with multiple downstream receivers on a shared LAN and handling of subsequent join messages. This test also checks for correct timing out of multicast forwarding state with active receivers when no data is transmitted.
The test topology includes three routers, A, B, and C and two hosts. This topology features a shared multiaccess LAN, N2, with two downstream routers, only one of which will connect receivers. When (S,G) state is created, the downstream router, C, without receivers will send a prune upstream, soliciting a join for the router, B, that has downstream recievers.
N2 N3 +--- Router ------- Receiving N1 | B Host Sending ------- Router ---+ Host A | +--- Router ----- ... C
|Tested By||Kurt Windisch ( ANTC)|
|Date||2/10/98 (repeated 3/17/98|