IP Multicast Troubleshooting Tools
To troubleshoot IP multicast problems, the Windows 2000 Routing and Remote Access service provides the following tools:
Routing and Remote Access snap-in tables
Mrinfo command
Mtrace support
Netsh commands
IGMP event logging
Tracing
For more information about general multicast troubleshooting, see the Internet Draft titled "Multicast Debugging Handbook."