RedHat Cluster Suite - Multicast Address
 

Hi,

I have a Redhat Cluster Suite with 2 nodes, using option "Multicast HeartBeating" on clumembd, whith default IP: 225.0.0.11

The cluster member names are:

[root@rhcs1 root]# grep node /etc/hosts
192.168.100.1 node1
192.168.100.2 node2

My problem is that the Multicast IP is relating to other network addresses:

See:

[root@rhcs1 root]# ping 225.0.0.11
PING 225.0.0.11 (225.0.0.11) 56(84) bytes of data.
64 bytes from 10.20.178.241: icmp_seq=0 ttl=64 time=0.115 ms
64 bytes from 10.20.178.242: icmp_seq=0 ttl=64 time=0.353 ms (DUP!)

How to relate Multicast 225.0.0.11 to cerrect IPs (192.168.100.1 and 192.168.100.2) ?

Thanks.

Hi folks,

I solved the problem creating a static route with multicast address and network device.

Before route creation:
[root@node1 root]# ping 225.0.0.11
PING 225.0.0.11 (225.0.0.11) 56(84) bytes of data.
64 bytes from 10.20.178.241: icmp_seq=0 ttl=64 time=0.099 ms
64 bytes from 10.20.178.242: icmp_seq=0 ttl=64 time=0.324 ms (DUP!)

After route creation:
[root@node1 root]# route add 225.0.0.11 dev eth1
[root@node1 root]# ping 225.0.0.11
PING 225.0.0.11 (225.0.0.11) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=0 ttl=64 time=0.119 ms
64 bytes from 192.168.100.2: icmp_seq=0 ttl=64 time=0.360 ms (DUP!)

Thanks,

Livio.