Date: Sat, 2 Nov 2019 19:09:10 -0700 (PDT) From: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net> To: mike@karels.net Cc: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net>, freebsd-net@freebsd.org, Victor Gamov <vit@otcnet.ru> Subject: Re: FreeBSD as multicast router Message-ID: <201911030209.xA329AwE094172@gndrsh.dnsmgr.net> In-Reply-To: <201911030159.xA31x4he052393@mail.karels.net>
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> > > Hi All > > > > > > I have (noob) questions about multicast routing under FreeBSD. > > > > > > I have FreeBSD box with two (or more) multicast enabled interfaces (e.x. > > > vlan750 and vlan299). vlan750 connected to multicast source. > > > > > > Then pimd installed and only this two interfaces enabled in pimd config. > > > Multicast routes successfully installed by pimd and listed by `netstat > > > -g -f inet` > > > > > > Then client on vlan299 send IGMP-Join (this Join received by FreeBSD on > > > vlan299) > > > > > > The question is: who will forward muilticast from one interface > > > (vlan750) to another (vlan299)? Is it kernel specific job or I need > > > additional software? > > > Please read the manpage multicast(4) "man 4 multicast", > > you should need to build a custom kernel with the "options MROUTING" > > to enable the multicast forwarding in the kernel. > > If "netstat -g" shows routes, the kernel must have been built with "options > MROUTING". Indeed. > > The kernel does the forwarding, according to those routing tables installed > by pimd or another multicast routing program. Is it not working? It sounds > like you are very close. Could it be sysctl net.inet.ip.forwarding? Does that still apply to mroutes? > > > > Victor Gamov > > > -- > > Rod Grimes rgrimes@freebsd.org > > Mike > _______________________________________________ > freebsd-net@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > -- Rod Grimes rgrimes@freebsd.org
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