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New Member

Retrieve leases when moving CNR from a Server to another

Hello,

We are going to change our change our CNRs (with DHCP Failover) from 2 servers to another 2 servers (version : 5.09)

I tried to make a test as following :

- install the new server, put the license, stop the CNR service.

- stop the old server

- copy de <>\DATA\DB\MCDDB.D0? files from the old server into the new server.

- have a keybuild & dbcheck -a. on the new server

- modify failover config on the new server.

- restart CNR service on the new server.

Sometimes I get an "Unexpected Response From Server" when I reload the DHCP server. After a 2nd dbcheck, it works well.

But I don't retrieve the leases on the new server...

Did I miss something ? Do I have to export then import the leases ?

(disable or enable failover does not change this situation).

Thanks for your help.

  • Other Network Infrastructure Subjects
3 REPLIES
Bronze

Re: Retrieve leases when moving CNR from a Server to another

Did you by any chance ever figure this out?

New Member

Re: Retrieve leases when moving CNR from a Server to another

I haven't solved the problem yet.

New Member

Re: Retrieve leases when moving CNR from a Server to another

The trick would have been to do what you have done, but not stop at just copying individual files. I usually install on the new server/stop services on old and new/copy the data dir and it's child dirs right over the new install data dir and children/re-ip the new machine to equal the old/remove the old from the wire/start services. This would bring all that you need to to swap the platform without loss of lease data or state.

...TC...

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