So, I have something weird that I've never seen before and it's a little difficult to describe.
Say I have 2 servers.
Server A: 192.168.1.5, Server B: 192.168.1.21
These two servers are on the same subnet and can ping out to the internet just fine. They can also ping servers on other subnets just fine. They can also ping a Windows host within the same subnet.
But what happens if both hosts are running Linux (Say Ubuntu Server or CentOS 7, or a mixture of the two -- Just both machines running Linix).
If Server A pings Server B -- No Response.
If server B pings Server A -- no response.
If Server A and Server B ping each other at the same time -- it starts responding until one is rebooted, then I'm back to the same issue. It will pass traffic back and forth all day long as long as one of the hosts doesn't reboot.
This is a great temporary fix, if you have two or three servers. But my network has over 80 servers on it and it's really annoying to have to do this for every host on the network every time they reboot.
How could I fix something like this?