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RE: [Linux-cluster] Network Interface Binding for cman



> -----Original Message-----
> From: linux-cluster-bounces redhat com 
> [mailto:linux-cluster-bounces redhat com] On Behalf Of Mrugesh Karnik
> Sent: Thursday, April 02, 2009 11:09 PM
> To: linux-cluster redhat com
> Subject: Re: [Linux-cluster] Network Interface Binding for cman
> 
> On Thursday 02 Apr 2009 21:34:12 Jeff Sturm wrote:
> > It binds to a multicast address.  That address is bound to one 
> > interface normally.
> 
> Well, how do I specify which interface to bind that multicast 
> address to?

Generally speaking you would create a route entry, e.g.:

ip route add multicast 224.0.0.0/4 dev eth1 scope link

However I believe CMAN does not require this, and will automatically
bind to the same interface as the unicast address associated with the
node names you specify in cluster.conf.

> I see the `bindnetaddr' directive in openais.conf man page.

The multicast address (not interface) is automatically determined based
on your cluster name.  Probably best to leave it that way unless you
have a specific reason to override it.

Jeff



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