Re: [Devil-Linux-discuss] Antw: Multicast Routing does not work - newstatus

[Alexander R. <Ale...@ar...>]

thanks for the reply!

we do not use NAT and the firewall is off. it's just a router between =
client-net and server-net. you say that zebra can do multicast routing and =
zebra is now quagga, right? i have quagga running, but perhaps with the =
wrong configuration?

<snip>
hostname a-rtr01
password 8 xxxxxxxxxxx
enable password 8 xxxxxxxxxxx
log stdout
service password-encryption
!
interface eth0 # server-net
 ip address x.x.x.x/24
 multicast
 ipv6 nd suppress-ra
!
interface eth1 # client-net
 ip address x.x.x.x/24
 multicast
 ipv6 nd suppress-ra
!
interface lo
!
interface sit0
 ipv6 nd suppress-ra
!
ip route 224.0.0.0/4 eth0
!
ip forwarding
ipv6 forwarding
!
line vty
!
end
</snip>

Greetings,
Alexander Roos

>>>=20
Von: 	ger...@gm...=20
An:	<dev...@li...>
Datum:	13.07.2006 13:21
Betreff:	Re: [Devil-Linux-discuss] Antw: Multicast Routing does not =
work - newstatus

Just trying to clarify previous post. Multicasting routing does not
work as unicast routing. This works a little different, depending if
you use NAT or not.
  No NAT involved: Use IGMP router like zebra, pimd, mrouted, xorp
  NAT: Requires setting up routes manually (use for instance smcroute)
or an IGMP Proxy
(http://www.ietf.org/internet-drafts/draft-ietf-magma-igmp-proxy-06.txt)

Unfortunately, there are no good IGMP proxy available for *nix. There
should be some in closed projects, but I did not find much when
investigating a year and a half ago. I did find one hidden in the open
source embedded linux Texas Instruments routers. I have adapted this
IGMPproxy to work with normal linux kernels. There are some
limitations with this, I tried adapting pimd to make a proper
solution. However, I lost access to the test object before I could
finish. There are a little info here (I have modified pimd a little
since this):
http://hem.bredband.net/b382880/igmp=20

Note: you also need to modify the firewall. Some hints, using Shorewall:
http://lists.shorewall.net/pipermail/shorewall-users/2004-August/014266.htm=
l=20
http://lists.shorewall.net/pipermail/shorewall-users/2005-January/016793.ht=
ml=20

--=20
Gerhard
The sender address really contains .nospam.


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