Netgear WFS709TP - ProSafe Smart Wireless Controller 서비스 매뉴얼
Appendix: AP Boot Sequence
These steps describe the booting procedure of each Access Point from the moment
they’re powered on
until they’re ready to either be provisioned, or ready to transmit and receive.
The procedure is slightly different when the APs are configured statically and dynamically, as dynamically
they must discover all their communication variables, while statically they just have to load them from their
own memory.
The procedure is slightly different when the APs are configured statically and dynamically, as dynamically
they must discover all their communication variables, while statically they just have to load them from their
own memory.
Dynamic:
1.
AP loads location ID from BootROM.
2.
AP sends out a DHCP request. If no DHCP information is
received, the AP will rebroadcast regularly trying to acquire an
IP address.
received, the AP will rebroadcast regularly trying to acquire an
IP address.
If DHCP response includes vendor option 43 (masterip), the
AP will use this for Master IP address and proceed to Step 6.
AP will use this for Master IP address and proceed to Step 6.
3.
If no vendor option specified, AP sends “ADP” packet to
Multicast group 224.0.82.11. If it receives a response, proceed
to Step 6.
Multicast group 224.0.82.11. If it receives a response, proceed
to Step 6.
4.
If no response to Multicast ADP, AP sends “ADP” packet as
L2/L3 Broadcast (configure Master Netgear Wireless Switch
as a DHCP helper recipient). If it receives a response, proceed
to Step 6.
L2/L3 Broadcast (configure Master Netgear Wireless Switch
as a DHCP helper recipient). If it receives a response, proceed
to Step 6.
5.
If there is no response, the AP sends a DNS query to the
server
server
given by DHCP for “Netgear-master.domain.com”
where “domain.com” is the domain parameter given by DHCP.
Then, the AP will use this for Master IP address. If it receives a
response, proceed to Step 7
Then, the AP will use this for Master IP address. If it receives a
response, proceed to Step 7
At this point, if still hasn’t been able to acquire IP information
for it’s master controller, the Access Point will return to Stage
3.
for it’s master controller, the Access Point will return to Stage
3.
6.
AP sends message to the wireless controller with it
’s location
ID.
7.
If needed, the AP sends TFTP request to the wireless
controller and downloads OS image.
controller and downloads OS image.
8.
Based on the
AP’s Location ID, the current switch may take
control of this AP or direct it to another switch.
9.
If it necessary, the AP authenticates to new switch and
establishes GRE tunnel.
establishes GRE tunnel.