- RADIUS Attributes Overview and RADIUS IETF Attributes
- RADIUS Vendor-Proprietary Attributes
- RADIUS Vendor-Specific Attributes and RADIUS Disconnect-Cause Attribute Values
- Connect-Info RADIUS Attribute 77
- Encrypted Vendor-Specific Attributes
- RADIUS Attribute 5 NAS-Port Format Specified on a Per-Server Group Level
- RADIUS Attribute 8 Framed-IP-Address in Access Requests
- RADIUS Attribute 82 Tunnel Assignment ID
- RADIUS Attribute 104
- RADIUS Tunnel Attribute Extensions
- V.92 Reporting Using RADIUS Attribute v.92-info
- RADIUS Attribute 66 Tunnel-Client-Endpoint Enhancements
- RADIUS Attribute Screening
- RADIUS NAS-IP-Address Attribute Configurability
- AAA Per VC QoS Policy Support
Connect-Info RADIUS Attribute 77
The Connect-Info RADIUS Attribute 77 feature enables the Network Access Server (NAS) to report Connect-Info (attribute 77) in RADIUS accounting "start" and "stop" records that are sent to the RADIUS client (dial-in modem). These records allow the transmit and receive connection speeds, modulation, and compression to be compared in order to analyze a user session over a dial-in modem where speeds are often different at the end of the connection (after negotiation).
When the network access server (NAS) sends attribute 77 in accounting "start" and "stop" records, the connect rates can be measured across the platform. The "transmit" speed (the speed at which the NAS modem sends information) and "receive" speed (the speed at which the NAS receives information) can be recorded to determine whether user modem connections renegotiate to lower speeds shortly into a session. If the transmit and receive speeds are different from each other, attribute 77 reports both speeds, which allows the modem connection speeds that each customer gets from their session.
Attribute 77 is also used to send the Class string for broadband connections such as PPPoX, physical connection speeds for dial access, and the VRF string for any sessions on router interfaces defined with ip vrf forwarding command.
 Note |
This feature requires no configuration. |
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Prerequisites for Connect-Info RADIUS Attribute 77
Before the NAS can send attribute 77 in accounting "start" and "stop" records, you must perform the following tasks:
- Configure your NAS for authentication, authorization, and accounting (AAA) and to accept incoming modem calls.
- Enable AAA accounting by using the aaa accounting network default start-stop group radiuscommand in global configuration mode.
- Change the modem poll timer by using the modem link-info poll timecommand in global configuration mode. (Changing the modem poll timer is required on all supported platforms except the Cisco AS5400).
How to Verify the Connect-Info RADIUS Attribute 77
To verify attribute 77 in your accounting "start" and "stop" records, use the debug radius privileged EXEC command. The following example shows that Connect-Info appears in the first and last accounting attributes:
Router# debug radius
RADIUS: code=Acct-Request id=04 len=0134
authenticator=BE A2 F3 BD EE CE 89 C7 - 48 19 32 F5 79 84 94 D5
T=Connect-Info[77] L=17 V="31200/33600 V34+/LAPM"
T=Acct-Status-Type[40] L=06 V=Start [1]
...
RADIUS: code=Acct-Request id=07 len=0226
authenticator=06 AC 03 10 4A 84 44 A4 - 6F D9 68 AA B3 90 44 CB
...
T=Connect-Info[77] L=1F V="33600 V34+/LAPM (31200/336"
T=Acct-Status-Type[40] L=06 V=Stop [2]
...
Note |
If the modem negotiation speeds are different, the speeds are shown in a bracket format at the end of the call. |
Configuration Example for Connect-Info RADIUS Attribute 77
Configure NAS for AAA and Incoming Modem Calls Example
The following example is a sample NAS configuration for AAA and incoming modem calls:
interface Serial0:15 no ip address isdn switch-type primary-net5 isdn incoming-voice modem ! interface Async1 ip address 10.0.0.10 255.0.0.0 encapsulation ppp async default routing async mode interactive no peer default ip address ppp authentication chap ! line 1 modem InOu transport preferred none transport input all autoselect ppp !
Additional References
The following sections provide references related to the Connect-Info RADIUS Attribute 77 feature.
Related Documents
| Related Topic |
Document Title |
|---|---|
| IOS dial technologies |
" Configuring and Managing Cisco Access Servers and Dial Shelves " chapter of the Cisco IOS Dial Technologies Configuration Guide |
| Cisco IOS Dial Technologies Command Reference |
|
| RADIUS and security related information |
Cisco IOS Security Command Reference |
Standards
| Standard |
Title |
|---|---|
| No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature. |
-- |
MIBs
| MIB |
MIBs Link |
|---|---|
| No new or modified MIBs are supported by this feature, and support for existing MIBs has not been modified by this feature. |
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL: |
RFCs
| RFC |
Title |
|---|---|
| RFC 2869 |
Technical Assistance
| Description |
Link |
|---|---|
| The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. |
Feature Information for Connect-Info RADIUS Attribute 77
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
| Table 1 | Feature Information for Connect-Info RADIUS Attribute 77 |
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Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.
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