Dell W-Series 324 Instant 6.4.3.1-4.2 User Guide - Page 221
Table 42, Centralized, L2, L3, Enabled, Disabled, DHCP relay, Helper address, Alcatel
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Table 42: Centralized DHCP Mode Configuration Parameters Name Description Name Enter a name for the DHCP scope. Type Set the type as follows: l Centralized,L2 for the centralized,L2 profile l Centralized,L3 for the centralized,L3 profile 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 on page 102 and Configuring VLAN for a Wired Profile on page 120. Split tunnel Set this to Enabled or Disabled for split tunnel functionality for the centralized,L2 subnet. Enabling split tunnel allows a VPN user to access a public network and a local LAN or WAN network at the same time through the same physical network connection. For example, a user can use a remote access VPN software client connecting to a corporate network using a home wireless network. The user with split tunneling enabled is able to connect to file servers, database servers, mail servers and other servers on the corporate network through the VPN connection. When the user connects to Internet resources (websites, FTP sites and so on), the connection request goes directly out the gateway provided by the home network. The split-DNS functionality intercepts DNS requests from clients for non-corporate domains (as configured in Enterprise Domains list) and forwards to AP's own DNS server. When split-tunnel is disabled, all the traffic including the corporate and Internet traffic is tunneled irrespective of the routing profile specifications. If the GRE tunnel is down and when the corporate network is not reachable, the client traffic is dropped. DHCP relay If you are configuring a Centralized, L2 DHCP profile, you can select Enabled to allow the W-IAPs to intercept the broadcast packets and relay DHCP requests to centralized DHCP server. NOTE: The DHCP relay option is not available for centralized,L3 profile configuration. Helper address Specify the IP address of the DHCP server. NOTE: For Centralized, L2 DHCP profiles, the Helper address option is displayed only when DHCP relay is enabled. VLAN IP Specify the Centralized L3 DHCP subnet gateway IP. VLAN Mask Specify the subnet mask of the Centralized L3 DHCP subnet gateway IP. Option82 Select Alcatel to enable DHCP Option 82 to allow clients to send DHCP packets with the Option 82 string. The Option 82 string is available only in the Alcatel (ALU) format. The ALU format for the Option 82 string consists of the following: l Remote Circuit ID; X AP-MAC; SSID; SSID-Type l Remote Agent; X IDUE-MAC NOTE: The Option 82 string is specific to Alcatel and is not configurable. 4. Click OK. Dell Networking W-Series Instant 6.4.3.1-4.2.0.0 | User Guide DHCP Configuration | 221