If you haven't already, you will need to edit the rp_filter flag in linux. Setting this to "2" (commonly called RPF Loose) may help with your routing issue. Let me know if you have any questions or issues.
https://www.slashroot.in/linux-kernel-rpfilter-settings-reverse-path-filtering /Charles van Niman On Tue, Apr 24, 2018 at 9:16 AM, knet solutions <knetsolutio...@gmail.com> wrote: > > All, > > I am facing a strange issue (all routers are linux with bird runnning). > My topology(RING Topology) is as below, > > > R1 ------------R2------------R3---------R4 > > BGP is running on all nodes. > > R1 to R3 route is going via R1--R2--R3 and the return path is in also in > same path (R3--R2----R1), then thing works fine > > But suppose, > > R1 to R3 path is R1---R2---R3 and return path is R3----R4---R1. then > traffic is not passing. > > Any configurations i should do in linux ? > > -- > > *Regards, * > > *Suresh* > *Knet solutions.* > > https://github.com/knetsolutions/KNet > http://knet-topology-builder.readthedocs.io/ > http://knetsolutions.in/ > >
