Networking Equipment

• Cluster nodes are usually connected using more then one network interface
• (e.g. a standard Ethernet and a cross-cable Ethernet or serial link)
• - this helps reduce the chance for a "split brain" problem (we'll explain this later on).
• Sometimes, each cluster node is connected to a different network switch.
• - this is done in order to avoid a single switch failure causing the entire cluster to be in-accessible.

Originally written by guy keren