[FROG] Question about pimd

kevin-chiang kevin-chiang at looptelecom.com
Mon May 13 04:14:13 EDT 2019

Dear developers,


We have some questions about pimd:


1.      I see some IGMP related code in pim folder and also see the
following description in README:

In order to deliver end-to-end multicast routing control

  plane, qpimd includes the router-side of IGMPv[2|3] (RFC 3376).

==> Does it means FRR totally compliance with RFC3376??


2.      If user has its own IGMP daemons to handle IGMP packets and then
install multicast route to kernel.

Does FRR pimd can work with this without enable its IGMP feature? Or you
will suggest user to use FRR IGMP to work with FRR pimd.


3.      How pimd retrieve the multicast route change information from zebra?
It seems pimd doesn't register such handler to zebra server.


4.      Does FRR have any plan to support MLD in the near future?


Please guide us


Thanks a lot






Loop Telecommunication International, Inc.




8GESW is designed to transport Ethernet services over SDH/SONET networks (EoS). It provides eight GbE ports and a range of standard L2 switch functions, including VLAN, Q-in-Q, MAC learning, MSTP/RSTP, CoS and QoS, and etc. Ethernet bridging services include EPL, EVPL, and EPLAN. Max. bandwidth for SDH/SONET transportation is either STM-4/OC-12 or STM-16/OC-48. Dual 8GESW cards can be mounted simultaneously to achieve card-level protection. Protection switch happens within 50 ms without any traffic interruption. Traffic at the SDH/SONET side is further protected by SNCP/UPSR ring and MSP (1+1).

For further arrangement and more information, please do not hesitate to contact Loop Telecom.

"Migrating Legacy Networks to the Future"
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