[Linux-HA] Failover-Cluster: 2 nodes in different locations

[Oliver Baltz]

Hi,

we want a failover-cluster with 2 nodes for a "BSCW"-service
(http://bscw.gmd.de) connected via 100mBit-LAN.
That seems to be quite easy with heartbeat/DRBD.
BUT: Between the 2 nodes there a few routers and switches - it's a LAN of
an university.

The problem:
How do the nodes know, whether the node or the network between them is
down? Only a node-failure should cause a failover-action!

Do you have any solution for me?

Thanks in advance.
Oliver