Dasan V5808 - Page 436

UMN:CLI User Manual
V5808
436
Under the ECMP environment, if IGMP Proxy multi-uplink interface is load-balancing
mode, a multicast traffic flow is split across the multipath according to the priority based
on its credit unit value and configurations. The upstream interfaces with the largest credit
would get the highest proxy-service priority.
If IGMP Proxy multi-uplink interface is specified the priority mode, one upstream interface
of the highest priority based on its credit value, priority and vid handles a multicast traffic
flow.
IGMP IF flap discredit function has been designed to minimize such a path recalculation
caused by the IF flapping, which can increase the stability and quality for multicast
service. Using this function, the V5808 gives a discredit to a IGMP IF for every flapping
time, and then the IF is not selected as a forwarding path until its credit is regenerated.
IGMP Proxy IF flap discredit function is implemented with the following restrictions, so
you must keep them in mind before setting the related commands or parameters.
• If you configure recover-interval value as 0, the decreased IGMP IF credit is not re-
covered.
• If the credit unit becomes 0 because of the continuous flapping of IGMP IF, the
credit is not recovered until clear ip igmp if flap discredit command is configured.
To enable/disable the IGMP IF flap discredit function, use the following command.
Command
Mode
Description
ip igmp if flap discredit
Global
Enables the IGMP IF flap discredit. (default)
no ip igmp if flap discredit
Disables the IGMP IF flap discredit.
To specify the discredit value in case of IGMP IF flapping, use the following command.
Command
Mode
Description
ip igmp if flap discredit unit <1-
50>
Global
Specifies the discredit value for the IF flapping and
decreases the credit unit as much as a specified value.
(default: 5)
no ip igmp if flap discredit unit
Deletes a configured discredit value.
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!
!
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