PLANET XGS3-24040 - Manual (Page 398)

Chapter 43 Ipv4 Multicast Protocol
43-52
43.11 IGMP Proxy Configuration
43.11.1 Introduction to IGMP Proxy
IGMP/MLD proxy which is introduced in rfc4605, is a simplified multicast protocol running at edge boxes. The
edge boxes which runs the IGMP/MLD proxy protocol, does not need to run complicated multicast routing
protocols such as PIM/DVMRP. However they work with multicast protocol enabled network through
IGMP/MLD proxy. They can simplify the implementation of multicasting on edge devices.
The IGMP/MLD proxy works between the multicast router and the client, it works as both the multicast host
and router. Upstream and downstream ports should be specified in the IGMP/MLD proxy configuration. The
host protocol runs at upstream ports, while the router protocol runs at downstream ports. The switch collects
the join and leave messages received from downstream ports and forward them to the multicast router
through upstream ports.
The IGMP proxy configuration is exclusive with PIM and DVMRP configuration.
43.11.2 IGMP Proxy Configuration Task List
1． Enable IGMP Proxy function
2． Enable configurations for both downstream and upstream ports for the IGMP Proxy in different
interfaces
3． Configure IGMP Proxy
1. Enable IGMP Proxy function
Command Explanation
Global Mode
ip igmp proxy
no ip igmp proxy
Enable IGMP Proxy function. The “no ip
igmp proxy” disables this function.
2. Enable configurations for both downstream and upstream ports for the IGMP Proxy in different
interfaces
Command Explanation
Interface Configuration Mode
ip igmp proxy upstream
no ip igmp proxy upstream
Enable IGMP Proxy upstream function. The “no ip
igmp proxy upstream” disables this function.
ip igmp proxy downstream
no ip igmp proxy downstream
Enable IGMP Proxy downstream function. The “no
ip igmp proxy downstream” disables this
function.