[Pacemaker] Physical setup - crossover cable recommended ?

Miles Fidelman mfidelman at meetinghouse.net
Tue Nov 1 17:36:16 EDT 2011

Hugo Deprez wrote:
> Dear community,
> I would like to improve my configuration of my clusters.
> I am thinking of using a crossover cable between my two servers for :
> Corosync trafic,
> DRBD trafic,
> Is that the best practice ?
> By using a crossover cable I'll avoid any issue on the cluster when
> spanning tree change on my network.
> Until now all the trafic is using the same Lan. And I do have other
> stuff on this network.

Don't know if it's best practice, but it works.  That's how I was 
running my cluster until this morning (just added two more servers, so I 
had to replace a crossover cable with a gigE hub).

Of course it wasn't really a crossover cable - just a piece of Ethernet 
cable - with autodetect, the DCE/DTE distinction no longer makes any 

Critical thing is to make sure you get all your networking set up 
correctly so that heartbeat goes over the new channel.

In theory, there is no difference between theory and practice.
In<fnord>  practice, there is.   .... Yogi Berra

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