Reference Guide

140 | ip dhcp DellNetworking W-Series Instant 6.4.0.2-4.1 | CLI Reference Guide
Parameter Description Range Default
<server_type>
assignment modes:
l Distributed, L2
l Distributed, L3
l Local
l Local, L3
l Centralized, L2
l Centralized, L3
distributed,l3,local,
local,l3,centralized,l2,
centralized,l3
server-vlan <idx>
Configures a VLAN ID for the DHCP
scope. To use this subnet, ensure that
the VLAN ID specified here is assigned
to an SSID profile.
1-4093 —
subnet <subnet>
Defines the network IP address — —
subnet-mask
<subnet_mask>
Defines the subnet mask for Local,
Local,L3, and distributed,l3 DHCP
scopes. The subnet mask and the
network determine the size of subnet.
— —
vlan-id <VLAN_
IP>mask <VLAN
mask>
Defines the IP address and subnet
mask for vlan of the DHCP server.
— —
no…
Removes any existing configuration. — —
Usage Guidelines
Use this command to configure the DHCP address assignment for the branches connected to the corporate network
through VPN. You can configure the following types of DHCP profiles.
l Distributed, L2 — In this mode, the Virtual Controller acts as the DHCP server, but the default gateway is in the
data center. Based on the number of clients specified for each branch, the range of IP addresses is divided.
Based on the IP address range and client count configuration, the DHCP server in the Virtual Controller controls a
scope that is a subset of the complete IP Address range for the subnet distributed across all the branches. This
DHCP Assignment mode is used with the L2 forwarding mode.
l Distributed, L3 — In this mode, the Virtual Controller acts as the DHCP server and the default gateway. Based
on the number of clients specified for each branch, the range of IP addresses is divided. Based on the IP address
range and client count configuration, the DHCP server in the Virtual Controller is configured with a unique subnet
and a corresponding scope.
l Local — In this mode, the Virtual Controller acts as both the DHCP Server and the default gateway. The
configured subnet and the corresponding DHCP scope are independent of subnets configured in other W-IAP
clusters. The Virtual Controller assigns an IP address from a local subnet and forwards traffic to both corporate
and non-corporate destinations. The network address is translated appropriately and the packet is forwarded
through the IPSec tunnel or through the uplink. This DHCP assignment mode is used for the NAT forwarding
mode.
l Local, L3— In this mode, the Virtual Controller acts as a DHCP server and the gateway, and assigns an IP
address from the local subnet. The W-IAP routes the packets sent by clients on its uplink. This mode does not
provide corporate access through the IPsec tunnel. This DHCP assignment mode is used with the L3 forwarding
mode.
l Centralized, L2—When a Centralized, L2 DHCP scope is configured, the Virtual Controller bridges the DHCP
traffic to the controller over the VPN/GRE tunnel. The IP address is obtained from the DHCP server behind the