I have a problem pinging between 2 hosts.
both have a "production" network card and a "Backup" card.
cards in productions works fine, but backup cards does not work.
exchange server 003 has : 172.16.0.124
exchange server 004 has: 172.16.0.123
can't ping between those to hosts. I can ping between other hosts on the same network like exch001 and 002.
Local firewall is disabled on both. and tried almost everything.
Both are physical (HP G8 servers) with 4 network cards (2 active).
One card works perfect , other card works not so good.
It's connected to a large Cisco MPLS network with some hops beteween the edge switch to PE (Provider Edge) node.
But I have checked that the VLAN tagged are existing on each hop/nodes.
Can it be like network drivers/cabeling that fails.
checked that autodetect on ports are fullduplex, 1000mbp/s.
Best Regards Aamodt