IP Multicast troubleshooting

Multicast technology without compromise. That's why you have to be prepared in terms of knowledge and have appropriate diagnostic tools.

Multicast stream diagnostic:

• http://www.pjdaniel.org.uk/mpeg/
• http://tsreader.com/index.html
• http://partner.sgtsa.pl/mcrecv
• https://github.com/slemire/mcast_tools

For example what can cause multicast problems:

• microburst
• no QoS
• filtering packages related to multicast (i.e. some switches has options to protect from DoS but not always it works like it should)
• broken fiber transceiver
• disabled IGMP Snooping

Below are some interesting links:

• Mitigating Superfluous Multicast Data Traffic and Control State
• IP Multicast Best Practices for Enterprise Customers
• Multicast TroubleShooting
• IP Multicast DeepDive
• IGMP Proxy