User Manual
UMN:CLI
V8102
509
10.2.7
IGMP Proxy
IGMP Proxy enables this L3 switch to issue IGMP host messages on behalf of hosts that
the switch discovered through standard IGMP interfaces. The switch acts as a proxy for
its hosts. The V8102 supports IGMPv2.
IGMP Proxy can only work in a simple tree topology; where traffic is distributed to explicit
upstream and downstream. You need to manually designate upstream and downstream
interface on IGMP proxy switch. There are no multicast routers within the tree and the
root of the tree is expected to be connected to a wider multicast infrastructure.
The IGMP proxy-enabled switch can deliver multicast traffic to the downward LANs or di-
rect hosts without performing complex multicast routing protocol.
IGMP Proxy function is implemented with the following restrictions, so you must keep
them in mind before setting IGMP Proxy related commands or parameters.
•
It must be used only in a simple tree topology.
•
User should manually set upstream and downstream interface for IGMP proxy opera
tion.
•
IGMP proxy and PIM on an interface cannot work together.
•
It
doesn’t support IGMPv3; if IGMPv3 runs on the interface, that interface should not
be designated upstream and downstream interface of IGMP proxy switch. At the
same time, if a certain interface is configured as upstream or downstream interface,
IGMPv3 setting should not be made on that interface.
•
It
doesn’t work with SSM mapping.
•
IGMP proxy is a L3 feature and requires L3 interfaces to use for that function. Also,
the
no shutdown
command should be preceded before configuring IGMP proxy in
terfaces.
•
If
ip igmp proxy-service sip first-reporter
is configured, the first reporter
’s source
IP address of a group remains even though it leaves from the group. The information
will be maintained until the group membership record is deleted.
10.2.7.1
Designating Downstream Interface
To specify the downstream interface for IGMP proxy operation, use the following com-
mand.
Command
Mode
Description
ip igmp mroute-proxy
{
giga-
bitethernet
|
tengigabitethernet
|
gpon
|
channelgroup
}
IFPORT
Interface
[VLAN]
Designates the downstream interface of mroute proxy.
ip
igmp
mroute-proxy
vlan
VLANS
no ip igmp mroute-proxy
{
giga-
bitethernet
|
tengigabitethernet
|
gpon
|
channelgroup
}
IFPORT
Release the downstream interface of mrouter proxy.
no ip igmp mroute-proxy vlan
VLANS
!
