[Xorp-users] Very simple multicast setup, yet can't find any text on how to do it!

[Pavlin Radoslavov]

Erik,

XORP doesn't implement MLD proxy hence must configure PIM-SM for
IPv6 to forward multicast packets between interfaces.
Please see xorp/rtrmgr/config/multicast6.boot for sample config, and
the XORP User Manual for details. 

Regards,
Pavlin

Erik Slagter <erik at slagter.name> wrote:

> Syed Khalid wrote:
> > On Sat, Jan 17, 2009 at 5:03 AM, Erik Slagter <erik at slagter.name
> > <mailto:erik at slagter.name>> wrote:
> >     Please help me, even though it might not be strictly xorp related. BTW I
> >     tried xorp and mrd6 to accomplish this.
> >     I have a linux server with 12 ethernet interfaces, traffic between them
> >     is routed by the kernel. All these have one or more
> >     hosts connected, some running ipv6 and/or some of them running
> >     multicast clients.
> >     I have a tool that sends mp3's to a multicast address
> >     (ff05:0:0:0:0:0:2:1) and a tool that listens to this address.
> >     Everything works if I set up a route manually for ff05:0:0:0:0:0:2:1 to
> >     one of the devices, the client indeed gets the traffic and all works.
> >     But that's not my intention. I want the traffic that is sent from the
> >     (same) server to
> >     ff05:0:0:0:0:0:2:1 to be sent out on all interfaces that have clients
> >     requesting the stream (using MLD requests). The client has indeed MLD
> >     packets sent by the kernel of the client to the server.
> >     Seems pretty basic multicasting to me. But I can't get it working. I
> >     tried xorp, plain kernel, mrd6. No errors, but the traffic is simply not
> >     sent out to the client's interfaces. The MLD membership messages are
> >     received and processed, but the traffic still goes out on one single
> >     RANDOM device (in this case a DUMMY interface!)
> >     It doesn't matter how many clients are requesting using MLD, the
> >     multicast routing table simply isn't updated and packets are not
> >     multicast to one or more desired interfaces.
> >     I would be very happy with a sample setup for either xorp or mrd6 that
> >     accomplishes this. If it's even possible without userland applications
> >     (which I suspect) then also please tell me. I am using a recent kernel
> >     (2.6.27.10) which should have ipv6 multicast routing support (and which
> >     is enabled).
> >     Thanks very much indeed!
> 
>   > Hello Erik
>   >   Can you indicate which Xorp code you are using as well as linux type
>   > (ubuntu or RH or ??)? Can you send your configuration files also?
>   > Syed
> 
> xorp version 1.5 from source, linux vanilla kernel 2.6.27.10 from source
> with everything regarding multicasting enabled including multicast route
> ipv6.
> 
> This is my config.boot:
> 
> interfaces {
>       interface eth10 {
>           default-system-config
>       }
> }
> 
> protocols {
>       mld {
>           disable: false
> 
>           interface eth10 {
>               vif eth10 {
>                   disable: false
>               }
>           }
>           traceoptions {
>               flag all {
>                   disable: false
>               }
>           }
>       }
> 
>       fib2mrib {
>           disable: false
>       }
> }
> 
> plumbing {
>       mfea4 {
>           disable: false
>           interface eth10 {
>               vif eth10 {
>               disable: false
>               }
>           }
> 
>           interface register_vif {
>               vif register_vif {
>                   disable: false
>               }
>           }
> 
>           traceoptions {
>               flag all {
>                   disable: false
>               }
>           }
>       }
> }
> 
> Please note, all xorp (or whatever what program) has to do for me, is
> receive MLD group membership packets from clients (attached to the
> server) and make the kernel transmit the packets (generated ON the
> server) with the relevant multicast (ipv6) address to the subscribed
> clients!