We have a PS4100 running v6.0.11 that replicates three volumes over a VPN WAN tunnel to a PS4000 running the same version of firmware. Normally, replication is rock solid, but all replication jobs stalled permanently a couple of days ago. Console error msg: "replTunnel.cc:1642:ERROR:7.4.78; Partner APPLE: iSCSI: login timed out. Make sure the partner IP address is correct and reachable."

Sad to say, we do not have an up-to-date service contract on either; so I'm seeking help triaging this issue. The VPN tunnel has been restarted and is up; I've successfully pinged 64-byte packets across it. I know that the first test is to successfully pint every destination interface address from every source interface address. Pls remind me of the CLI syntax to do so.

My only clue is that the running replication job seems to have stalled about the time that I did a controller restart on the source SAN to swap out the cache battery. Is it possible that the jumbo frames setting has to be set on both controllers?

Anyway...guidance would be appreciated; I really have to get this replication rolling again! Thanks!