[Linux-cluster] what is it "the same network path"?

[Stepan Kadlec]

hello,
what is it "the same network path" - mentioned in 
http://sources.redhat.com/cluster/faq.html#two_node_correct ?

I have two node cluster using HP iLO fencing. the iLO interfaces are 
connected in separate VLAN and the interfaces used for CMAN 
communication are connected to another VLAN (but both provided by single 
switch).

do I need quorum disc for such configuration?

currently I don't use quorum disc and the nodes easily end in fence loop 
(if not booted in exactly same time) - is this because I am breaking 
"the same network path" rule? why?

bye stepan.