UMN:CLI
User Manual
V8102
512
To set the IGMP IF flap credit regenerating rate, use the following command.
Command
Mode
Description
ip igmp if flap recover-interval
<0-3600>
Global
Specifies the interval of recovering its credit as much
as a specified value. (default: 10 seconds)
ip igmp if flap recover-unit
<1-
50>
Sets the regenerating value of the IF credit.
(default: 5)
no ip igmp if flap
{
recover-
interval
|
recover-unit
}
Deletes a configured IF credit regenerating rate.
If you configure this rate as 0, the IGMP IF credit is not regenerated!
To set the current IGMP IF credit as the default (100), use the following command.
Command
Mode
Description
clear ip igmp if flap discredit
[{
gigabitethernet
|
tengiga-
bitethernet
|
gpon
|
chan-
nelgroup
}
IFPORT
]
Enable
Global
Restores the current credit to a default value (100).
clear ip igmp if flap discredit
vlan VLANS
10.2.7.5
Disabling Verification of Source IP of IGMP Packets
RPF (Reverse Path Forwarding) Check is basic operation to correctly forward multicast
traffic down the distribution tree. A multicast router checks if the packet is received on the
interface it would used to forward a unicast packet back to the source. If the RPF check is
successful, the packet is forwarded. Otherwise, it is dropped.
However, IGMP Proxy switches do not perform RPF check on multicast traffic and only
can verify if IGMP packets are received from connected network.
To disable the IGMP packet
’s source IP verification function, use the following command.
Command
Mode
Description
no ip igmp verify-sip
Global
Disable the RPF check over IGMP packets.
ip igmp verify-sip
Enable the RPF check over IGMP packets (default).
10.2.7.6
Specifying IGMP Report/Leave
’s Source IP Address
In IGMP proxy operation, the switch interacts with the router on its upstream interface
through the exchange of IGMP messages on behalf of hosts and acts as the proxy. It per-
forms the host portion of the IGMP task on the upstream interface by replacing the source
IP address of IGMP messages, a membership report and leave group, with its own.
!
