[Linux-cluster] Using a null modem for heartbeat with CS4?

[Troels Arvin]

Hello,

I would like to have to heartbeat channels between my cluster nodes: A
cross-over ethernet cable and a null modem cable.

In the manual for Cluster Suite 3 (CS2), it's stated that a null modem
cable can be used for heartbeat.

The manual for CS4 doesn't mention null modem cables. Isn't it possible to
use null modem cables for heartbeat in CS4?

-- 
Greetings from Troels Arvin