WPP

Overview

WPP (Web Portal Protocol) runs between a BNG and a Web portal server. It is used for Web portal authentication of WLAN users (DHCP hosts). WPP can be enabled on base routing instances or VPRN routing instances. WPP version 2.0 has an updated packet format and additional message types.

Subscriber creation triggered by WPP messages (log in via HTTP) supports a topology where the subscriber host IP address is provided via the CMTS NE. The ESM host is created after the client is authenticated through the Web portal.

In the case of WPP traffic on an SRRP dual homing configuration, the Web portal is not aware of SRRP mastership. A network interface on a base routing instance, or an L3 access interface on an IES or VPRN service can be configured with the Track SRRP Instance option, which specifies the master NE to which WPP traffic is directed.