Error opening site recovery in vSphere Replication 8.5

[aunkhan]

vSphere replication server seems to be deployed correctly on production (PR) and disaster recovery (DR) site (same network/domain). Both hosts running Esxi-6.7 are managed by vCenter7 (link mode). Opening site recovery from DR site works fine but from PR site, it gives error

[aunkhan]

Any workaround for this error?

Unable to retrieve pairs from extension server at https://DR<ipaddress.domain>:8043. Unable to connect to HBR management server at https://DR<ipaddress.domain>:8043 . Reason: java.net.NoRouteToHostException. No route to host VR management server at https://DR<ipaddress.domain>:8043 is unreachable.