D-Link DWS-1008 User Manual page 136

DWS-1008 User's Manual
Directly Connected DWL-8220APs and Distributed APs
To configure the switch to support a DWL-8220AP access point, you must first determine
how the DWL-8220AP will connect to the switch. There are two types of AP to DWS-1008
connection: direct and distributed.
• In direct connection, a DWL-8220AP connects to one or two 10/100 ports on a
DWS-1008. The DWS-1008 port is then configured specifically for a direct attachment
to a DWL-8220AP. There is no intermediate networking equipment between the
switch and AP and only one AP is connected to the switch port. The switch's 10/100
port provides PoE to the AP. The DWS-1008 also forwards data only to and from the
configured AP on that port. The port numbers on the switch configured for directly
attached MPs reference a particular AP.
• A DWL-8220AP that is not directly connected to a DWS-1008 is considered a Distributed
AP. There may be intermediate Layer 2 switches or Layer 3 IP routers between the
DWS-1008 and AP. The DWS-1008 may communicate to the Distributed AP through
any network port. (A network port is any port connecting the switch to other networking
devices, such as switches and routers, and it can also be configured for 802.1Q VLAN
tagging.) The DWS-1008 contains a configuration for a Distributed AP based on the
AP's serial number. Similar to ports configured for directly connected APs, Distributed
AP configurations are numbered and can reference a particular AP. These numbered
configurations do not, however, reference any physical port.
Distributed AP Network Requirements
Because Distributed APs are not directly attached to an DWS-1008, they require additional
support from the network in order to function.
• Power - PoE must be provided on one of the Ethernet connections to the AP. Be sure
to use a PoE injection device that has been tested by D-Link. Providing PoE on both of
the Ethernet connections (on models that have two Ethernet ports) allows redundant
PoE.
• DHCP - A Distributed AP uses TCP/IP for communication, and relies on DHCP to obtain
IP parameters. Therefore, DHCP services must be available on the subnet that the AP
is connected to. DHCP must provide the following parameters to the AP:
• DNS - If the intermediate network between the switch and Distributed AP includes
one or more IP routers, create a TRPZ.mynetwork.com or wlan-switch.mynetwork.com
entry on the DNS server. The entry needs to map one of these names to the system IP
address of the switch.
The DNS entry allows the AP to communicate with an switch that is not on the AP's
D-Link Systems, Inc.
• IP address
• DNS server address
• Gateway address
Configuring DWL-8220AP Access Points
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