A dynamic services data trigger is an object that is created when a frame received on a dynamic services capture SAP is sent to the control plane for authentication. A dynamic services data trigger is uniquely identified with its SAP ID. If the dynamic services data trigger was received on capture SAP x / y / z:*.* with outer-tag = a and inner-tag = b, then the dynamic service data trigger SAP ID is ‟x / y / z:a.b”. For each dynamic services data trigger, the following information is stored.
| Data trigger information | Description |
|---|---|
Acct-Session-ID |
The RADIUS accounting session ID for this dynamic services data trigger. This accounting session ID is used as accounting multi-session ID in RADIUS accounting for associated dynamic services. It can also be used as a key in CoA or Disconnect Messages to set up or terminate associated dynamic services. |
MAC |
The MAC address learned to set up this dynamic service data trigger. The MAC address is included in the Access-Request message for RADIUS authentication. |
IP |
The IPv4 or IPv6 address learned to set up this dynamic service data trigger. If the data trigger packet was not an IP packet, then this field is empty. When available, the IP address is included in the RADIUS authentication and accounting messages. |
State |
The current state of the dynamic service data trigger: Pending: (initial state) data trigger received and authentication started Accepted: (transient state) authentication succeeded; dynsvc script started but not yet completed sapCreated: (final state) corresponding dynamic services SAP created |
The dynamic services data trigger information can be displayed as follows:
# show service dynamic-services data-triggers
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Dynamic Services Data-triggers
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SAP : 1/1/4:1214.101
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Acct session-ID : 144DFF0000009156A24138
MAC : 00:51:00:dd:01:01
IP :
State : sapCreated
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No. of Data-triggers: 1
===============================================================================
For a data-triggered dynamic data service to be successfully set up, a dynamic services SAP equal to the data trigger SAP ID must be created.
In the same way as the control channel model, multiple dynamic data services can be associated with a single dynamic services data trigger: up to 32 dynamic services during data trigger authentication or up to 4000 in total through CoA. When the dynamic services SAP that corresponds to a data trigger is deleted (teardown action), then all dynamic services associated with that dynamic services data trigger are deleted (teardown action).