heartbeat over more than one NIC, mcast explanation
Sat, 18 Jan 2003 20:51:47 -0600
Gregor Goestl wrote:
>I have two questions:
>Is it possible to use more than one NIC for heartbeat signals? Does the
>following setting in ha.cf work:
>to send heartbeats over two different ethernet connections?
>Can me someone explain me the functionality of the 'mcast' Setting in ha.cf?
>What can I do with that stuff?
the syntax in ha.cf is as follows:
mcast [dev] [mcast group] [port] [ttl] [loop]
[dev] device to send/rcv heartbeats on
[mcast group] multicast group to join (class D multicast address
220.127.116.11 - 18.104.22.168)
[port] udp port to sendto/rcvfrom (no real reason to differ
from the port used for broadcast heartbeats)
[ttl] the ttl value for outbound heartbeats. this effects
how far the multicast packet will propagate. (0-255)
[loop] toggles loopback for outbound multicast heartbeats.
if enabled, an outbound packet will be looped
received by the interface it was sent on. (0 or 1)