AP registration fails in remote subnet

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  • Updated 3 years ago
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I have a strange Problem:

On my V2110 Controller I use the esa0 Interface for the AP registration.

If my AP's (Siemens AP2610) are in the same subnet, everythings works
fine. Now i want to bring one AP to a remote subnet, the registration
fails, but the controller knows the new AP IP address ( I can telnet the AP and ping the
controller and the controller can ping the AP (no firewall between them). There is also a DNS Record "controller.domain.name" pointing to the

 So there must be a communication between AP and EWC, because i can ping and enable/disble Telnet. But the AP is not shown in the active AP list.

I don't know where I misconfigured it.

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Andre Scheper

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Posted 5 years ago

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Gareth Mitchell, Extreme Escalation Support Engineer

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Official Response
Hi Andre

Further to what Ron has said, you can try to change the controller config so that the controller won't try to upgrade the APs firmware, under AP settings, global AP settings, AP Maintenance, check the radio button for "Upgrade when AP connects using settings from Controlled Upgrade", this would help rule out firmware upgrade being an issue.

If the AP comes up as connected then you can troubleshoot why the upgrade didn't work, common reasons are ACL's or ETS policy blocking TFTP or a bad route.

If you still have issues I would recommend that you take a wired trace of the AP trying to connect using wireshark and a full show technical-support file, then place a call into the GTAC so that we might help.

Best regards