Discovery and Registration
Wireless devices (APs and SA201 adapters)
discover the IP address of
ExtremeCloud IQ
Controller using a sequence of mechanisms that allow
for the possible services available on the enterprise network. The discovery process is
successful when the AP/adapter successfully locates a controller to which it can register.
Ensure that the appropriate services on your enterprise network are prepared to support the
discovery process.
![Note](images/note.png)
Note
The
following subnets are reserved for internal communications and Docker operations:
- 172.17.0.0/24
- 172.31.0.16/28
The ExtremeCloud IQ
Controller user
interface logic prevents adding addresses in these address ranges for VLAN interface
references.
An access point can learn a hostname from a DHCP server. The AP reports either
the discovered hostname, or an internally generated hostname (which is the AP serial number)
to the controller as part of the discovery process.
- If ExtremeCloud IQ
Controller does not have a current record of the
AP, the controller applies the reported hostname for use in the Name and Hostname fields
for the AP.
- If ExtremeCloud IQ
Controller already has a record for the AP, then
the controller ignores the reported hostname.
- If the AP does not report a hostname to
the controller as part of the discovery process, and there is no record of the AP on ExtremeCloud IQ
Controller, then the name
and hostname are generated.