Hi,
Have you check the below note.
1872990 - various error messages related to incorrect resolution of localhost
Use the below command if you think there is no network issue.
sapcontrol -prot NI_HTTP -nr 01 -function Start |
Is the actual system up and running? What do you see in the work directory logs of the shadow system.
Can you please post the latest logs.
Thanks
Rishi abrol