User's Manual

Configuration Guide of XGS-5240-Series
42-19
n properly because of physical connection or configuration mistakes. So the users shoul
d note that:
 Make sure correct physical connection
 Activate IGMP Snooping on whole configuration mode (use ip igmp snooping)
 Configure IGMP Snooping at VLAN on whole configuration mode ( use ip igmp sn
ooping vlan <vlan-id>)
 Make sure one VLAN is configured as L2 common checker in same mask, or mak
e sure configured static mrouter
 Use show ip igmp snooping vlan <vid> command check IGMP Snooping informat
ion
42.4 IGMP Proxy Configuration
42.4.1
Introduction to IGMP Proxy
IGMP/MLD proxy which is introduced in rfc4605, is a simplified multicast protocol r
unning 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 a
s both the multicast host and router. Upstream and downstream ports should be specifi
ed in the IGMP/MLD proxy configuration. The host protocol runs at upstream ports, whil
e 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 thr
ough upstream ports.
The IGMP proxy configuration is exclusive with PIM and DVMRP configuration.
42.4.2 IGMP Proxy Configuration Task List
1. Enable IGMP Proxy function
2. Enable configurations for both downstream and upstream ports for the IGMP Prox
y in different interfaces
3. Configure IGMP Proxy
1. Enable IGMP Proxy function