vSphere Replication

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 Extrange issue with replication

Daniel Martinez's profile image
Daniel Martinez posted Oct 30, 2025 02:32 PM

Hi

I have two sites with a vSan cluster on each one. The vCenter are in 8.03 00600 and hosts are in vSphere 8.03f (so not the latest build but close to it).

On each site I have download and deployed VLR appliances 9.0.0.4 (latest available). After registering each appliance on his own vCenter I have paired both sites without problem.

However during the mapping test I see that one site is OK:

But the other site shows this error:

The vSphere Replication management server cannot configure replication on target vSphere Replication server (id: 'host-2177', name: 'hostX.mydomain.local') and target broker 'x.x.x.x'.

As a result, I can perfectly perform a replication from site A to site B but I can't replicate at the oposite direction.

It looks as a communications issue, but I don't find where it is the problem. Cause every host, vCenter and VLR Appliance can "ping" between them, no matter if they are conntacting to site A or site B. Also there are no firewall rules between sites so blocked ports should not be an issue...

Any idea about what could it be?

Thanks in advance!