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Configuring portal detection features
Configuring online detection of portal users
About online detection for portal users
Configure online detection to quickly detect abnormal logouts of portal users.
•
Configure ARP or ICMP detection for IPv4 portal users.
•
Configure ND or ICMPv6 detection for IPv6 portal users.
If the device receives no packets from a portal user within the idle time, the device detects the user's
online status as follows:
•
ICMP or ICMPv6 detection—Sends ICMP or ICMPv6 requests to the user at configurable
intervals to detect the user status.
If the device receives a reply within the maximum number of detection attempts, it considers
that the user is online and stops sending detection packets. Then the device resets the idle
timer and repeats the detection process when the timer expires.
If the device receives no reply after the maximum number of detection attempts, the device
logs out the user.
•
ARP or ND detection—Sends ARP or ND requests to the user and detects the ARP or ND
entry status of the user at configurable intervals.
If the ARP or ND entry of the user is refreshed within the maximum number of detection
attempts, the device considers that the user is online and stops detecting the user's ARP or
ND entry. Then the device resets the idle timer and repeats the detection process when the
timer expires.
If the ARP or ND entry of the user is not refreshed after the maximum number of detection
attempts, the device logs out the user.
Restrictions and guidelines for configuring online user detection
ARP and ND detections apply only to direct and re-DHCP portal authentication. ICMP detection
applies to all portal authentication modes.
Configuring online detection for IPv4 portal users
Step
1.
Enter system view.
2.
Enter interface view.
3.
Configure online detection of
IPv4 portal users.
Configuring online detection for IPv6 portal users
Step
1.
Enter system view.
2.
Enter interface view.
3.
Configure online detection of
IPv6 portal users.
Command
system-view
interface interface-type
interface-number
portal user-detect type { arp |
icmp } [ retry retries ] [ interval
interval ] [ idle time ]
Command
system-view
interface interface-type
interface-number
portal ipv6 user-detect type
{ icmpv6 | nd } [ retry retries ]
[ interval interval ] [ idle time ]
319
Remarks
N/A
N/A
By default, this feature is disabled
on the interface.
Remarks
N/A
N/A
By default, this feature is disabled
on the interface.
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Troubleshooting
