I have the aforementioned listed in the title and I've been trying to understand a problem I've been having lately. At work we have a network connectivity script we use (using TeraTerm) that will test the interconnections we have between all the ports. The current config used when testing between two point is as follows:
interface e1/1
ip add 10.10.10.1/24
no shutdown
interface e1/2
vrf member BLUE
mac-address 0000.0001.0011
ip add 10.10.10.2/24
no shutdown
I send the command "ping 10.10.10.2 source-int e1/1 count 10" and the ping goes through. The interface configuration is removed and then placed on the next pair to be tested. Lathe, rinse, repeat. The problem I find myself hitting is that every so often a pair of interfaces will configure, but the ping will not go through. I've had instances where a particular pair of interfaces have worked 10 times in a row, but say I try to get it to do it an 11th time then it fails. And when I do a retry of the the ping then it works. Can anyone help me understand this seemingly random intermittent ping failure?