RADIUS

Name

Acct-Terminate-Cause

Synopsis

Attribute Number	49
Length	6
Value	ENUM
Allowed in	Accounting-Request
Prohibited in	Accounting-Response
Presence in Packet	Not required
Maximum Iterations	1

The Acct-Terminate-Cause attribute indicates the reason, if possible and applicable, that a user’s session was ended. Like a good number of the other accounting attributes, the request packet must contain the Acct-Status-Type attribute set to Stop (code 2).

Listed in Table 4-3 are the 18 possible values for this attribute.

Table 4-3. Values for the Acct-Terminate-Cause attribute

Value	Termination cause
1	User Request
2	Lost Carrier
3	Lost Service
4	Idle Timeout
5	Session Timeout
6	Admin Reset
7	Admin Reboot
8	Port Error
9	NAS Error
10	NAS Request
11	NAS Reboot
12	Port Unneeded
13	Port Preempted
14	Port Suspended
15	Service Unavailable
16	Callback
17	User Error
18	Host Request

Let’s take a closer look at each of these termination causes:

User Request

The user initiated the termination by logging off.

Lost Carrier

The port could no longer hold DCD.

Lost Service

For some reason, the service is unavailable for continued provision. Connection interruptions are the most likely cause.

Idle Timeout

The configured limit for an idle connection was reached.

Session Timeout

The configured limit for the length of a single session was reached.

Admin Reset

The system administrator reset hardware necessary to continue the connection.

Admin Reboot

The system ...