Multicast and routed for Linux?

Multicast and routed for Linux?

Post by Chris Tro » Wed, 22 Nov 1995 04:00:00



     Our network provider has just announced that they now support Multicast
and will help us connect to the MBONE.  Right now they will only support
tunneling Multicast, so it's necessary to use mrouted.

     So I'm looking at the Linux Multicast FAQ and I find this:

   You need a multicast capable router, maybe Cisco or Proteon,
   or a system such as Sun or SGI running mrouted. Read the general
   mbone FAQs. mrouted is coming for Linux 1.3.22 (credits Alan Cox).
   It wasn't there before as the mrouted code was heavily embedded in the
   BSD kernel.

     Here we are at Linux 1.3.42.  I went looking for routed for Linux without
any luck.  Does such a beast exist yet?  This would make setting things up on
my end much easier.

     I've compiled a kernel with Multicast turned on and it seems to work.  I
just need mrouted.

     Thanks to the team for the Multicast support!

Chris...

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Multicast and routed for Linux?

Post by Chih-Jen Chan » Fri, 24 Nov 1995 04:00:00


Quote:>      Here we are at Linux 1.3.42.  I went looking for routed for Linux without
> any luck.  Does such a beast exist yet?  This would make setting things up on
> my end much easier.

>      I've compiled a kernel with Multicast turned on and it seems to work.  I
> just need mrouted.

ftp://ftp.linux.org.uk/pub/linux/Multicast/linux-mrouted-3.6.tar.gz

Internet Group Management Prototol Version 1 is described in RFC1112
IGMP version 2 is an IETF draft now.
But ipmulti-3.5 and mrouted 3.6 have already implement the IGMP Version 2.

 
 
 

1. Linux multicast is slower than Windows multicast ?

I'm developing 2 applications :

1- A program that runs under linux (mandrake 9.0) and sends multicast
packets (code is very simple, similar to this:
http://www.linuxsocket.org/books/Sockets/programs/part4/chap17/mcast_...)

2- A program under Windows2000 that receives multicast packets (sent
by linux program)

I noticed that linux transmitter is very slow. I tried to transmit
same packets using Windows application and I noticed that win2000 is
faster (10 times) than Linux. I tried different packet sizes:
transmission under linux is slower than Windows only for big packets
(>20KB).
Have somebody noticed same behaviour ?
Is there some configuration (kernel or user) that can improve Linux
performance ?

Thanks,

Manuel

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