ACCESS GATEWAY
248 Quick Reference Guide
Idle Timeout
The WMI allows the setting of a default timeout. If the Radius server does not send an Idle- Timeout in the
Radius Access-Accept, the Access Gateway will use the default one to disconnect subscribers. “0” means
forever.
Timeout Detection
If a subscriber is sending traffic through the Access Gateway, the Access Gateway will immediately detect a
Session-Timeout. However in the case of an Idle-Timeout or an inactive subscriber Session-Timeout, the
Access Gateway detects it via a clean-up function that is currently called every 2 minutes. Thus the current
precision for sending the Acct-Stop is about 2 minutes.
Subscriber Session Duration
Acct-Session-Time is calculated the following way (for each transmitted/retransmitted Acct- Stop):
Acct-Session-Time = time of last sent packet - subscriber login time.
Another attribute, Acct-Delay-Time, will take into consideration the time spent in retransmissions.
Interim Accounting Updates
The Access Gateway parses the attribute Acct-Interim-Interval in an Access-Accept. If this attribute is present
the Access Gateway tries every [Acct-Interim-Interval] seconds to send a Radius Accounting Interim message
for the specific subscriber. If this attribute is not present or equal to 0, no Interim message is sent.
The precision is 2 minutes. The Access Gateway will not send Interim messages more frequently than every 2
minutes.
Called-Station-ID
This is the Media Access Control (MAC) address of the Access Gateway.
Calling-Station-ID
This is the Media Access Control (MAC) address of the client's computer.
New Attributes in Acct-Request
The Access Gateway has to send the following attributes in an Accounting-Stop:
Acct-Output-Packets: number of packets sent by subscriber.
Acct-Input-Packets: number of packets received by subscriber.
Upon a reboot, these 2 attributes are saved in currfile.dat the same way as for Acct-Input- Octets and Acct-
Input-Octets.
If you plan to implement RADIUS, go to “Contact Information” on page 347 for Nomadix
Technical Support.
Nomadix Vendor-Specific RADIUS Attributes
Nomadix provides the following vendor-specific RADIUS attributes. This list may vary depending on your
configuration.
Attribute Integer Value Description
Nomadix-BW-Up 1 Value (in Kbps) restricts the speed at which uploads are performed.
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