User guide

4-11
Cisco WLAN Controller Web Interface User Guide
OL-7416-04
Chapter 4 Controller Menu Bar Selection
DHCP Scopes
DHCP Scopes
Use CONTROLLER > Internal DHCP Server to navigate to this page.
The controllers have built-in DHCP relay agents. However, when network administrators desire network
segments that do not have a separate DHCP server, the controllers can have built-in DHCP Scopes
(Dynamic Host Configuration Protocol servers) that assign IP addresses and subnet masks to Cisco
WLAN Solution clients. Typically, one controller can have one or more DHCP Scopes that each provide
a range of IP addresses. This page shows the existing DHCP server Scope names.
Each DHCP Scope displays the following entries, which are a subset of those set on the DHCP Scope >
Edit page:
• Scope Name.
• Network Served.
• Netmask - subnet mask assigned to all Cisco WLAN Solution clients.
• Address Pool - IP Address range. Note that this pool must be unique for each DHCP Scope, and must
not include the static IP addresses of routers and other servers.
• Lease Time - number of seconds an IP address is granted to a client.
• Scope Status - Scope Enabled or Disabled.
• Click Edit to go to the DHCP Scope > Edit page to change the DHCP Scope settings.
• Remove a DHCP Scope by selecting the appropriate Remove link. You are prompted to confirm the
DHCP Scope removal.
Command Buttons
• New: Click New to go to the DHCP Scope > New page.
DHCP Scope > New
Use CONTROLLER > Internal DHCP Server then click New to navigate to this page.
The controllers have built-in DHCP relay agents. However, when network administrators desire network
segments that do not have a separate DHCP server, the controllers also have built-in DHCP Scopes
(servers) that assign IP addresses and subnet masks to Cisco WLAN Solution clients. Typically, one
controller can have one or more DHCP Scopes that each provide a range of IP addresses. This page
allows you to add a DHCP server Scope Name.
Add a new DHCP Scope by entering the DHCP Scope Name and then clicking Apply. The Cisco WLAN
Solution saves the DHCP Scope Name and returns you to the DHCP Scopes page. On the DHCP Scopes
page, click Edit to set the DHCP Scope parameters on the DHCP Scope > Edit page.
Command Buttons
• Back: Return to the previous window.
• Apply: Data is sent to the controller and made to take effect, but not preserved across a power cycle;
these parameters are stored temporarily in volatile RAM.