Remote Backup WLC-ontroller over WAN Link

Unanswered Question
Mar 3rd, 2008


we try to setup a Backup Controller over a WAN Link. I know that the 100mesc is one of the limitations.

But what happens to the Routing and DHCP for the client if the Controller is been far away ?

Did i have to change something in the Routing Configs.

Kind regards

I have this problem too.
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Scott Fella Mon, 03/03/2008 - 14:08

If you have your primary at the remote location, that means that your network subnets off that controller is local to that subnet. So if you bring up another wlc as a backup for the remote site, but located in another location, you will have to have the dynamic interface(s) in the backup location.

For example, if wifi users on the remote site gets a dhcp of 192.168.50.x when the primary is up, then the wifi users will have to get dhcp from another subnet, but from the backup location.

Hope this makes sense.


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