We have two Linux CentOS hosts, A and B.
A = 19x.2xx.6.4 (/24) B = 19x.2xx.7.4 (/24)
Both these hosts are on the same physical switch. The reason why they are on different logical networks is because in the future they will be on separate physical networks.
A can ping B, and from A you can SSH to B.
You can also
TRACEROUTE from A to B, in this case it goes through router C (19x.1x.8.1).
You cannot NMAP from A to B and various other important network utilities fail when connecting from A to B. The general effect is the same as a time-out.
The router in has aliases on the Cisco as such:
interface FastEthernet0/0 ip address 19x.2xx.6.1 255.255.255.0 secondary ip address 19x.2xx.7.1 255.255.255.0 secondary ip address 19x.1x.8.1 255.255.255.192
I am at a loss how to fix this problem. Please assist.