Solman 7.1 Diagnostics agents connections

Hi,

We are busy performing the system preparation tasks on our solman 7.1 , we are on step 6.3 connect diagnostics agents  but agent don't appear on the agent availables in all SLD table:

We have checked on the system and agent is running on the SLD server:

Can someone help us with this issue?

Thanks a lot, Sapera