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Overview of the SCALANCE WLC711 Solution

SCALANCE WLC711 and Your Network

SCALANCE WLC711

1-6 C79000-G8976-C260-03, 07/2012, User Guide, V8.11

• IWLAN Controller Access Point (Wireless AP) — A wireless LAN fit access point that

communicates with a SCALANCE IWLAN Controller.

• RADIUS Server (Remote Access Dial-In User Service) (RFC2865), or other authentication

server — An authentication server that assigns and manages ID and Password protection

throughout the network. Used for authentication of the wireless users in either 802.1x or

Captive Portal security modes. The RADIUS Server system can be set up for certain standard

attributes, such as filter ID, and for the Vendor Specific Attributes (VSAs). In addition,

RADIUS Disconnect (RFC3576) which permits dynamic adjustment of user policy (user

disconnect) is supported.

• DHCP Server (Dynamic Host Configuration Protocol) (RFC2131) — A server that assigns

dynamically IP addresses, gateways, and subnet masks. IP address assignment for clients can

be done by the DHCP server internal to the SCALANCE IWLAN Controller, or by existing

servers using DHCP relay. It is also used by the Wireless APs to discover the location of the

SCALANCE IWLAN Controller during the initial registration process using Options 43, 60,

and Option 78. Options 43 and 60 specify the vendor class identifier (VCI) and vendor specific

information. Option 78 specifies the location of one or more SLP Directory Agents. For SLP,

DHCP should have Option 78 enabled.

• Service Location Protocol (SLP) (SLP RFC2608) — Client applications are User Agents and

services that are advertised by a Service Agent. In larger installations, a Directory Agent

collects information from Service Agents and creates a central repository. The Siemens

solution relies on registering “Siemens” as an SLP Service Agent.

• Domain Name Server (DNS) — A server used as an alternate mechanism (if present on the

enterprise network) for the automatic discovery process. SCALANCE IWLAN Controller,

Access Points and Convergence Software relies on the DNS for Layer 3 deployments and for

static configuration of Wireless APs. The controller can be registered in DNS, to provide DNS

assisted AP discovery. In addition, DNS can also be used for resolving RADIUS server

hostnames.

• Web Authentication Server — A server that can be used for external Captive Portal and

external authentication. The SCALANCE IWLAN Controller has an internal Captive portal

presentation page, which allows Web authentication (Web redirection) to take place without

the need for an external Captive Portal server.

• RADIUS Accounting Server (Remote Access Dial-In User Service) (RFC2866) — A server that

is required if RADIUS Accounting is enabled.

• Simple Network Management Protocol (SNMP) — A Manager Server that is required if

forwarding SNMP messages is enabled.

• Network infrastructure — The Ethernet switches and routers must be configured to allow

routing between the various services noted above. Routing must also be enabled between

multiple SCALANCE IWLAN Controllers for the following features to operate successfully:

– Availability

– Mobility

– Mitigator for detection of rogue access points

Some features also require the definition of static routes.

• Web Browser — A browser provides access to the SCALANCE IWLAN Controller

Management user interface to configure the SCALANCE WLC711.

• SSH Enabled Device — A device that supports Secure Shell (SSH) is used for remote (IP) shell

access to the system.

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