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March 4th, 2020 09:00
UnityVSA failed replication connection from physical Unity
I have installed the UnityVSA Community Edition. I'm trying to set up an Asynchronous File replication from my physical Unity 450F to the UnityVSA.
The connection fails in the 4th of 5 steps - "Refresh local system connections on remote system".
The error description says, "Although the remote system is registered, the connectivity validation has failed. Check for any network connectivity issues, and also ensure that the time skew between the systems is less than 10 minutes. Once fixed, run the verify operation on the remote system to resolve this issue. View alerts related to the remote system connections for more information. (Error Code:0x6500128)"
The times are identical, and as far as I can tell, network communication is good.
(I tried a connection between my 450F and a 550F and that worked fine.)
The 450F has 2 SPs, of course, and therefore has 2 interfaces. The VSA only has only one SP and one interface.
Is that my issue?
DavidWaller
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March 24th, 2020 06:00
Our network engineer was able to solve this. It had to do with how VLAN tagging is handled on physical vs. virtual environments. Here is his explanation:
"On the physical Unity boxes, we present a trunk port so that you can create interfaces in whatever VLAN you want. The catch is that you must specify which VLAN an interface is in. If you don't, then it defaults to VLAN 1. Since both physical Unity boxes are on the same switch, they can talk to each other over VLAN 1 but not to any other part of the network on VLAN 1.
On the VSA, we cannot present a trunk port to the VM. The VLAN must be specified in VCenter. If the VM tries to specify a VLAN in the same way that the physical Unity does, VMWare throws the packet away as being invalid.
So, on the physical Unity boxes, you MUST specify the VLAN. On the VSA, you MUST NOT specify the VLAN."
DELL-Sam L
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March 5th, 2020 09:00
Hello DavidWaller,
Here are the steps that I would try & it should resolve your issue.
Note: Do not bypass the step to remove the Replication Connection. If you do, and create the Replication Interfaces, the Replication Session creation will fail. You must remove the faulted Connection and then follow the correct order shown below.
Please let us know if you have any other questions.
DavidWaller
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March 5th, 2020 09:00
Thanks, Sam. I had already tried all that before my post. I deleted the connection and all of the interfaces. I received the same error when I tried to recreate the connection.
DavidWaller
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March 5th, 2020 12:00
Can I do that even though I'm trying to connect to the Community Edition?
DELL-Sam L
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March 5th, 2020 12:00
Hello DavidWaller,
Since you have tried those steps, I would call into support so that we can pull some logs to see what is going on.
Please let us know if you have any other questions.
DELL-Sam L
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March 6th, 2020 12:00
Hello DavidWaller,
First thing I would do is to double check all connections to make sure all are active. Can you SSH to each system? Can you also ping back & forth your replication connections? Can you ping both management ports both directions?
Since you have a unity 450f you can contact support and we can verify that all are set correct on your 450f and see if there is something missing on your VSA community. However community is going to be best effort support form tech support.
Please let us know if you have any other questions.
DavidWaller
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March 10th, 2020 11:00
I can SSH into each system. From the 450F, I get a ping response from the VSA management IP as well as the one remote interface. From the VSA I get a ping response from the 450F management IP, but not from the remote interfaces.
However, I have created a successful replication connection between my 450F and my 550F, even though I don't receive ping responses from the remote interfaces from either system. That tells me all must be OK on the 450F.
DELL_ChrisHolloway
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March 11th, 2020 01:00
Have you tried creating the connection on the other system? I mean, if you're trying to create it on the 450F, try creating it on the VSA or vice versa.
DavidWaller
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March 11th, 2020 06:00
Yup. Same time zone, same NTP server.
DELL_ChrisHolloway
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March 11th, 2020 06:00
You've checked time right? Are they using NTP? Is the timezone configured correctly on both?
DavidWaller
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March 11th, 2020 06:00
Yes. Same error at the same step.
maniemc
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March 19th, 2020 09:00
Can you able to run "svc_networkcheck -r" on both VSA and Physical arrays and check what is wrong ?
you can post that output here too.