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Migrate NHRP(DMVPN) to FRR


FRR support NHRP. We can use FRR nhrpd instead of openNHRP


Difficulty level
Unknown (require assessment)
Why the issue appeared?
Will be filled on close
Is it a breaking change?
Unspecified (possibly destroys the router)

Event Timeline

Dmitry created this task.Apr 18 2020, 2:14 PM
Dmitry triaged this task as High priority.Apr 21 2020, 8:53 PM
pasik added a subscriber: pasik.Apr 26 2020, 1:04 PM

FRR nhrpd do not support multicasting over GRE tunnels so OSPF or EIGRP don't work since they use multicast addresses to discover neighbors

runar added a subscriber: runar.Tue, Jul 21, 5:58 PM

As i remember the lack of multicast replication was the reason this stopped up last time it was discussed... And as ospf and eigrp is the most used protocols run over dmvpn i think this is a showstopper for implementimg nhrpd

Perhaps I'm one of the minority. but BGP is our predominant DMVPN routing protocol.

c-po added a subscriber: c-po.Tue, Jul 21, 7:44 PM

@hammerstud that would work for you - but it will break everyone elses implementation ;)