Boot Up Process

  1. Initial Boot: The AP powers on and attempts to obtain an IP address and gateway from the DHCP server on the native VLAN. The DHCP process can also specify DNS and NTP addresses.
  2. Time Synchronization: The AP tries to synchronize its device time using NTP.
    • If an NTP server is assigned using DHCP, the AP connects to that server using UDP port 123.
    • If no NTP server is assigned, the AP connects to the default NTP server using UDP port 123.
  3. DNS Configuration: The AP may need to use DNS to look up the NTP server hostname.
    • If a DNS server is defined using DHCP, the AP uses that server.
    • If no DNS server is defined, the AP uses its default DNS servers: 208.67.222.222 and 208.67.220.220.
Note

Note

Both DNS and NTP are required. If traffic is not allowed to the default NTP and DNS entries, accessible internal DNS and NTP must be defined using DHCP.
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