This one is perplexing me, and cause relatively a problem for my strange Active Directory environment: I hold a server next to two NICs: so it is both 192.168.0.10 and 192.168.0.11 and they are set statically. (It is the domain controller, DNS and DHCP master as well). But some workstations on the lattice are solely competent to ping 192.168.0.11 - others are competent to ping both. When I VPN into this server (.11) from home, I sometimes am inept to ping .10 myself. And right in a minute, from my VPN nouns, I am not sufficiently expert to ping workstations which I CAN ping from the server itself and which I know are on and in use. Why is it that some IPs feat sitting approaching this? Windows Firewall is disabled on every electrical device.
Answers:
Are both NIC's surrounded by indistinguishable VLAN? If so, move them to separate VLAN's. From at hand you can point the backup DNS/DC paperwork to one and primary to the other.
The defence why you cannot see everything is because you're have IP conflicts near your server. It's close to have two mailboxes, single some of your letters will progress surrounded by one, some the other, but never both. Any device next to more than one NIC should own both sort into seperate pools to prevent the conflicts that you're seeing.