SAP Router status : host not reachable X times

Hi Experts,

We (Our Infrastructure team) recently changed our SAP router public IP,

By this time the status of SAP Router at SMP is not stable.

for 20min it is saying "Host did not respond 1,2,.. times" for some time status is "cancelled".

Even though SAP AG can access our SAP systems.

Could you please check and help do we need to change any setting anywhere.

thanks,

Sreenivas.