#network will be changed from /24 to /23, what exactly impact on NetApp cluster and clients?

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whole vapor
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We have a non-routable network /24 which is running out of the IP space.

The network team is going to change /24 to /23, and double the size.

My understanding is, the new IP space would need the client NIC's changed to /23. I am asking about the right approach to change the netmask for all existing LIF's on the ONTAP cluster.

  1. Should we create all new LIF's with netmask 255.255.254.0, then gradually migrate existing ones to new ones one by one?

  2. Will there have to be down time?

lethal snow
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If you are broadening the network, like you are, I’m pretty sure you can just modify the Netapp LIFs netmask-length from 24 to 23. They will just have a bigger network

whole vapor
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I got a pretty good idea now. But, the only thing I would like somebody can please make sure with me is:
We should change the NetApp LIF's from /24 to /23 FIRST before anything else, because only then the new added client hosts(10.192.41.x/23) and existing client hosts(10.192.40.x/24) both can talk to the storage. We can change 10.192.40.x/24 to 10.192.40.x/23 for existing clients anytime late.

Correct?