HP 5920 Series Configuration Guide

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Configuring portal Web server detection
A portal authentication process cannot complete if the communication between the access device and
the portal Web server is broken. To address this problem, you can enable portal Web server detection
on the access device.
With the portal Web server detection function, the access device simulates a Web access process to
initiate a TCP connection to the portal Web server. If the TCP connection can be established successfully,
the access device considers the detection successful, and the portal Web server is reachable. Otherwise,
it considers the detection to have failed. Portal authentication status on interfaces of the access device
does not affect the portal Web server detection function.
You can configure the following detection parameters:
• Detection interval—Interval at which the device detects the server reachability.
• Maximum number of consecutive failures—If the number of consecutive detection failures reaches
this value, the access device considers that the portal Web server is unreachable.
You can configure the device to take the following actions when the server reachability status changes:
• Sending a log message, which contains the name, the current state, and the original state of the
portal Web server.
• Enabling portal fail-permit. When the portal Web server is unreachable, the portal fail-permit
feature on an interface allows users on the interface to have network access. When the server
recovers, it resumes portal authentication on the interface. For more information, see "Configuring
the por
t
al fail-permit function."
To configure the portal Web server detection function:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter portal Web
server view.
portal web-server server-name
N/A
3. Configure the portal
Web server detection
function.
server-detect [ interval interval ] [ retry
retries ] log
By default, portal Web server
detection is disabled.
This function takes effect regardless
of whether portal authentication is
enabled on an interface or not.
Configuring portal user synchronization
Once the access device loses communication with a portal authentication server, the portal user
information on the access device and that on the portal authentication server might be inconsistent after
the communication resumes. To address this problem, the device provides the portal user synchronization
function. This function is implemented by sending and detecting portal synchronization packets, as
follows:
1. The portal authentication server sends the online user information to the access device in a
synchronization packet at the user heartbeat interval, which is set on the portal authentication
server.

HP 5920 Series Specifications

General

Brand	HP
Model	5920 Series
Category	Switch
Language	English