[Linux-cluster] Initializing CMAN increases network chatter

[Lon Hohberger]

On Tue, 2008-01-29 at 09:41 -0800, Ray Charles wrote:

> I am wondering if this is normal due to the use of
> multicast in openais.
> 
> My network consists of 2 trunked layer2 switches and 2
> nodes(aka 2 node cluster) each with 2 nics that are
> configured as a bonded interface,mode 1. 
> 
> I have link lites on the switch ports i use. They stay
> lit until i start cman up. Then all the ports blink
> madly. It doesn't seem to impact the traffic, but i am
> wondering if all the chatter is necessary?

That's normal.  The cluster uses frequent multicast packets for
communication.

If it stops and goes solid while CMAN's running ... then you have a
problem :)

-- Lon