Static Ip Address Configuration For Distributed Aps; Contacting A Switch; How A Distributed Ap Contacts A Switch (Dhcp-Obtained Address) - D-Link DWS-1008 - AirPremier MobileLAN Switch Product Manual

Static IP Address Configuration for Distributed APs

In cases where DHCP is not available, you can manually assign IP address information to a Distributed
AP. This information is configured through the CLI.
You can configure the following information for a Distributed AP:
A. IP address, subnet mask, default router, and whether the configured static IP address
information is enabled for the AP.
B. The IP address of a suitable switch for the AP to use as a boot device.
C. The fully qualified domain name of a switch to use as a boot device, and the IP address of
a DNS server used to resolve the switch's name.
These items are referred to by letter in the description of how the AP contacts a switch in "How a
Distributed AP Contacts a Switch (Statically Configured Address)". If the AP does not have static IP
address information configured, or its static IP configuration is disabled, then the AP obtains its IP
address through DHCP.
After the AP has an IP address, it attempts to contact a switch on the network. The method used for
contacting a switch depends on whether the AP's IP address was obtained through DHCP or was
configured statically.

How a Distributed AP Contacts a Switch (DHCP-Obtained Address)

1. If the DHCP Offer message contained switch IP addresses or hostnames in the Option 43
field, the AP proceeds as follows:
• If the DHCP Offer message contained one or more IP addresses in the Option 43
field, the AP sends a unicast Find switch message to each address. The process
skips to step 6.
• If the DHCP Offer message contained one or more hostnames in the Option 43
field, the AP sends DNS Requests to the DNS server for the IP addresses of the
hosts, then sends a unicast Find switch message to each address. The process
skips to step 6.
• If no switches reply, the AP repeatedly resends the Find switch messages. If no
switches reply, the process continues with step 3.
D-Link DWS-1008 User Manual

Contacting a Switch

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