A suggestion was made to have routers warn if a non-convex domain is detected, but it's not clear that such a thing can be detected. The group then received implementation status from several implementors. His implementation is progressing well, but does not yet implement the whole PIM-SM spec. He talked about the requirement for UNIX kernel modifications to decapsulate PIM Register packets, and Steve Deering raised a concern about putting protocol-specific modifications into the UNIX kernel. It was clear that a general mechanism for specifying encapsulation and decapsulation is the only way around putting protocol-specific mechanisms into the kernel, since each protocol has its own encapsulation mechanism.
Cisco wants to require as little as possible to allow incremental deployment.
PIM-SMv2 RP's and DR's. Ahmed's implementation runs over IRIX 6.2 or SunOS 4.1.3, and implements almost all of the PIM-SMv2 spec. Michael Speer from Sun has ported Ahmed's implementation to Solaris 2.5.1, and is investigating both QoS routing and IPv6 in conjunction. David Thaler then gave a status on MIBs. The IGMP MIB has been updated to include variables to support IGMpv2.