Can anybody explain me what is layer 2 and layer 3 cascading of 3750-G Switches.
The reason I am asking that we are in phase of implementing Multicast for IPTV and the vendor requirements are as follows:
1. Edge devices can be layer 2 devices which support IGMP snooping (this allows switches to only forward multicast traffic to the ports that actually want the traffic and not to all of them
2. No cascading between layer 2 devices: it means that Layer 2 edge CANNOT be connected to another Layer 2 switch. Layer 3 cascading is fine.
My Edge devices are Cisco 3750G Switches. Please also brief me what I need to do to fullfill vendor's requirement.