06-12-2013 11:02 AM - edited 03-04-2019 08:10 PM
Hello,
I have just noticed a secondary IP on one of our WAN routers WAN interfaces, I've never seen a secondary addresses before, what could it's purpose be for?
Thanks
06-12-2013 11:05 AM
Allows you to allocate a secondary subnet. Useful for subnet migration on LAN segments or additional non-contiguous internet subnet blocks on WAN interfaces.
There are other uses but those 2 come to mind.
06-12-2013 12:16 PM
Ah that makes sense as a while back we changed our IP range and I guess the ISP overlapped networks?
We have to change our ASA public IP range soon as we are changing ISP's much means I need to reconfigure all the NATs I wonder if the ASA can do secondary IPs and have some overlap rather than a 'big bang' approach?
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