Configuring DHCP Server for Assigning IP Addresses to Instant AP Clients
The DHCPDynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network. server is a built-in server, used for networks in which clients are assigned IP address by the VC. You can customize the DHCP pool subnetSubnet is the logical division of an IP network. and address range to provide simultaneous access to more number of clients. The largest address pool supported is 2048. The default size of the IP address pool is 512.
When the DHCP server is configured and if the parameter for an SSIDService Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network. profile is set to , the virtual controller assigns the IP addresses to the WLANWireless Local Area Network. WLAN is a 802.11 standards-based LAN that the users access through a wireless connection. or wired clients. By default, the Instant AP automatically determines a suitable DHCP pool for networks.
The Instant AP typically selects the 172.31.98.0/23 subnet. If the IP address of the Instant AP is within the 172.31.98.0/23 subnet, the Instant AP selects the 10.254.98.0/23 subnet. However, this mechanism does not avoid all possible conflicts with the wired network. If your wired network uses either 172.31.98.0/23 or 10.254.98.0/23, and you experience problems with the networks after upgrading to Aruba Central, manually configure the DHCP pool by following the steps described in this section.
To configure a domain name, DNSDomain Name System. A DNS server functions as a phone book for the intranet and Internet users. It converts human-readable computer host names into IP addresses and IP addresses into host names. It stores several records for a domain name such as an address 'A' record, name server (NS), and mail exchanger (MX) records. The Address 'A' record is the most important record that is stored in a DNS server, because it provides the required IP address for a network peripheral or element. server, and DHCP server for client IP assignment, complete the following steps:
1. In the app, set the filter to a group that contains at least one AP.
The dashboard context for the group is displayed.
2. Under , click > .
A list of access points is displayed in the view.
3. Click the icon.
The tabs to configure the access points are displayed.
4. Click , and click the tab.
The System details page is displayed.
5. Click the accordion.
6. Click and enter the following information:
a. Enter the domain name of the client in Domain Name.
b. Enter the IP addresses of the DNS servers in DNS Server. To add another DNS server, click the icon.
c. Enter the duration of the DHCP lease in Lease Time. Select Minutes, Hours, or Days for the lease time from the list next to . The default lease time is 0.
d. Enter the network name in the box.
e. Enter the mask name in the box.
f. Click Save Settings.
To provide simultaneous access to more than 512 clients, use the and fields to specify a larger range. While the network (prefix) is the common part of the address range, the mask (suffix) specifies how long the variable part of the address range is.
