[Openais] RE: GMI across a router

[Steven Dake]

It sounds like your ping is working, just that the router itself isn't
routing the multicast packets.

There may be something about IGMP requiring some kind of daemon to route
the packets.

I'm just not sure.

THanks

On Wed, 2004-07-21 at 18:00, Sabharwal, Atul wrote:
> The setup is exactly like you mentioned. Even ping on 224.0.0.11 gets
> response
> >From two out of three nodes. I do not have an actual router to test
> with.
> 
> I guess I will have to just forget about it for now and leave it for
> someone
> Else to try.
> 
> --
> Atul
>  
> 
> >-----Original Message-----
> >From: Steven Dake [mailto:sdake at mvista.com] 
> >Sent: Wednesday, July 21, 2004 4:27 PM
> >To: Sabharwal, Atul
> >Cc: openais at lists.osdl.org
> >Subject: RE: GMI across a router
> >
> >I asume your setup is something like:
> >
> >some machines on a network A - switch - eth0 on router - linux router -
> >eth1 on router - switch - some machines on network B
> >
> >In this configuration you should be able to ping the address 224.0.0.1
> >on network A and you should get responses from every machine on both
> >network A and network B.
> >
> >Then try pinging a unicast address from network A to network B.
> >
> >If both of these work, then your router is probably routing the packets
> >correctly.
> >
> >I'm not sure how to setup the linux router to work correctly.  Another
> >option is to use an actual hardware router if you have one.  I don't
> >which is why I haven't tested this :)
> >
> >Thanks
> >-steve
> >
> >On Wed, 2004-07-21 at 15:50, Sabharwal, Atul wrote:
> >> >I'm afraid I dont have many ideas on this Atul.  It might 
> >be helpful to
> >> >try 226.94.1.0 as a route (vs 226.94.1.1) , or to add a 
> >default route
> >> >for 226.94.1.0 for eth0 and eth1.
> >> 
> >> I added default routes as 226.94.1.0 for both interfaces but 
> >when I do
> >> Ping all nodes do not respond. I have not done a packet 
> >trace but seems
> >> Like the ping program is not sending the ICMP request on both the
> >> interfaces.
> >> As when I hardcode the interface, it responds.  I could look 
> >for a patch
> >> For ping but the problem does not end there.
> >> 
> >> I have 3 nodes in the multicats group. One on the router and 
> >one on each
> >> Side. Two nodes join the multicast group but the one behind 
> >the router
> >> Is Stand alone.  This means its just not ping but multicast routing
> >> Is not working.
> >> 
> >> --
> >> Atul
> >
> >