Brocade Mobility Access Point System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 593)

Brocade Mobility Access Point System Reference Guide 583
53-1003100-01
9
• Provide a numerical IP address or hostname within the DNS Entry parameter for each
destination IP address or host in the whitelist.
• Use the Match Suffix parameter to match any hostname or domain name as a suffix. The
default setting is disabled.
• If necessary, select the radio button of an existing whitelist entry and select the - Delete
icon to remove the entry from the whitelist.
4. Select OK when completed to update the whitelist screen. Select Reset to revert the screen to
its last saved configuration.
Setting the DHCP Server Configuration
Getting Started with the Mobile Computer
Dynamic Host Configuration Protocol (DHCP) allows hosts on an IP network to request and be
assigned IP addresses as well as discover information about the network where they reside. Each
subnet can be configured with its own address pool. Whenever a DHCP client requests an IP
address, the DHCP server assigns an IP address from that subnet’s address pool. When the DHCP
server allocates an address for a DHCP client, the client is assigned a lease, which expires after an
pre-determined interval. Before a lease expires, wireless clients (to which leases are assigned) are
expected to renew them to continue to use the addresses. Once the lease expires, the client is no
longer permitted to use the leased IP address. The DHCP server ensures all IP addresses are
unique, and no IP address is assigned to a second client while the first client's assignment is valid
(its lease has not expired). Therefore, IP address management is conducted by the DHCP server,
not an administrator.
Brocade Mobility 7131 Access Point, Brocade Mobility 1220 Access Point, Brocade Mobility 1220
Access PointM, Brocade Mobility 1240 Access Point model have an internal DHCP server resource.
However, Brocade Mobility 6511 Access Point do not have an onboard DHCP server resource and
an external resource must be used.
The DHCP server groups wireless clients based on defined user-class option values. Clients with a
defined set of user class values are segregated by class. A DHCP server can associate multiple
classes to each pool. Each class in a pool is assigned an exclusive range of IP addresses. DHCP
clients are compared against classes. If the client matches one of the classes assigned to the pool,
it receives an IP address from the range assigned to the class. If the client doesn't match any of the
classes in the pool, it receives an IP address from a default pool range (if defined). Multiple IP
addresses for a single VLAN allow the configuration of multiple IP addresses, each belonging to
different subnet. Class configuration allows a DHCP client to obtain an address from the first pool
to which the class is assigned.
A single DHCP server configuration is supported by the access point, no separate DHCP policies
can be defined and maintained. For more information, refer to the following:
• Defining DHCP Pools
• Defining DHCP Server Global Settings
• DHCP Class Policy Configuration
Defining DHCP Pools
Setting the DHCP Server Configuration