Hello,
in this post, I would like to share you a case about IP reachability issue due to the misconfiguration.
Problem Description
CE-03-----------U2000---------Router----------CE-04
from CE-03 both the IPs 10.10.10.66 and 10.10.10.67 are reachable
10.10.10.66 old U2000 IP
10.10.10.67 new U2000 IP
but from CE-04 only 10.10.10.66 is reachable
Problem Analysis
Ask customer to explain the issue in details and feedback network topology and device diagnose information.
Check the route and find the 2 IPs have no difference.
Root Cause
It is configuration issue and device does not configure gateway.
Solution Description
Check the two different switch, the left one is connecting directly with U2000 while the right one goes to U2000 by L3. After configuring the gateway on device, it is working.
That's all for this post.
If you have any suggestions, please comment below.
Thanks.
