I have an issue regarding Multicast.
We recently upgraded a control system network using 3750G in a "ring" topology, which was running several types of traffic (CCTV:roughly 100 cameras, SOS telephones etc). Where we have been trying to introduce VLANs, and ran into a few problems due to the CCTV running multicast (was informed it was unicast) and therefore the VLAN introduction has been put on hold until the multicast routing has been resolved.
I have tested it using PIM dense mode but there was a significant delay/latency that arose after a random period of time. I believe this maybe due to the poor IP address scheme (hardcoded in the control system) which may have cause the problems, such as the following:
- Multicast packet loops / black holed packets
- An excess mcast routing table
Basically I need to know that if I use sparse mode with auto RP will this help!!
Also any advice on this subject would be of great benefit....
If any further details are required dont hesitate to ask
What you say actually makes sense. It occured to me after posting that the periodic flooding that occurs with dense mode could be causing your issues so i think it is a good idea to try sparse mode.