DHCP Configuration
16.1 Configuring DHCP Scopes
SCALANCE W1750D UI
286 Configuration Manual, 02/2018, C79000-G8976-C451-02
3. Based on the type of distributed DHCP scope, configure the following parameters:
Enter a name for the DHCP scope.
Type Select any of the following options:
•
—On selecting
, the VC acts as the DHCP
server but the default gateway is in the data center.
Traffic is bridged into
VPN tunnel.
•
—On selecting
, the VC acts as both DHCP
server and default gateway.
Traffic is routed into the VPN tunnel.
VLAN Specify a VLAN ID. To use this subnet, ensure that the VLAN ID specified
here is assigned to an SSID profile. For more information on SSID profile
configuration, see Configuring VLAN Settings for a WLAN SSID Profile (Pa-
ge 117) and Configuring VLAN for a Wired Profile (Page 149).
Netmask If
is selected for the type of DHCP scope, specify the subnet
mask. The subnet mask and the network determine the size of subnet.
Default router If
is selected for the type of DHCP scope, specify the IP ad-
dress of the default router.
If required, specify the IP address of a DNS server.
If required, specify the domain name.
Lease time Specify a lease time for the client in minutes within a range of 2–1440
minutes. The default value is 720 minutes.
Dynamic DNS Select the
check box to enable dynamic DNS on the Distribut-
ed, L3 client.
Key—Enter the TSIG shared secret key.
IP Address Ran-
ge
Specify a range of IP addresses to use. To add another range, click the +
icon. You can specify up to four different ranges of IP addresses.
• For the
mode, ensure that all IP ranges are in the same
subnet as the default router. On specifying the IP address ranges, a sub-
net validation is performed to ensure that the specified ranges of IP ad-
dress are in the same subnet as the default router and subnet mask. The
configured IP range is divided into blocks based on the configured client
count.
• For the
mode, you can configure any discontiguous IP
ranges. The configured IP range is divided into multiple IP subnets that are
sufficient to accommodate the configured client count.
You can allocate multiple branch IDs (BID) per subnet. The AP gener-
ates a subnet name from the DHCP IP configuration, which the controller can
use as a subnet identifier. If static subnets are configured in each branch, all
of them are assigned the with BID 0, which is mapped directly to the config-
Option Specify the type and a value for the DHCP option. You can configure the or-
ganization-specific DHCP options supported by the DHCP server. For exam-
ple, 176, 242, 161, and so on. To add multiple DHCP options, click the + icon.
You can add up to eight DHCP options.
4. Click
5. Specify the number of clients to use per branch. The client count configured for a branch
determines the use of IP addresses from the IP address range defined for a DHCP
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