On 08/23/2010 06:43 PM, MHT wrote:
So presume the tcpdump shows that the packet only gets as far as the multicast
address but nothing receiving? Sorry, I'm a numpty when it comes to networks.
Also, the Reporter column in /proc/net/igmp shows all zeros. The servers that
host the nodes where there's an issue are on the same vlan with no firewall
between them, and selinux is disabled.
If you are running Linux, then by default in most distro's there is also
a firewall
running as a service on the box.
do a 'service ipstables stop' as root on both boxes.
If that resolves it, you can correct the iptables config. Form your
discription my bet
is that it is iptables.
Carl.
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