Cisco IOS Security Configuration Guide: Securing User Services, Release 12.4

RADIUS Progress Codes

The RADIUS Progress Codes feature adds additional progress codes to RADIUS attribute 196 (Ascend-Connect-Progress), which indicates a connection state before a call is disconnected through progress codes.

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 for RADIUS Progress Codes" section.

Use Cisco Feature Navigator to find information about platform support and Cisco IOS and Catalyst OS software image support. To access Cisco Feature Navigator, go to http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp. An account on Cisco.com is not required.

Contents

•Prerequisites for RADIUS Progress Codes

•Information About RADIUS Progress Codes

•How to Configure RADIUS Progress Codes

•Additional References

•Feature Information for RADIUS Progress Codes

•Glossary

Prerequisites for RADIUS Progress Codes

Before attribute 196 (Ascend-Connect-Progress) can be sent in accounting "start" and "stop" records, you must perform the following tasks:

•Enable AAA.

•Enable exec, network, or resource accounting.

For information on completing these tasks, refer to the AAA sections of the Cisco IOS Security Configuration Guide: Securing User Services, Release 15.0.

When these tasks are completed, attribute 196 is active by default.

Information About RADIUS Progress Codes

Attribute 196 is sent in network, exec, and resource accounting "start" and "stop" records. This attribute can facilitate call failure debugging because each progress code identifies accounting information relevant to the connection state of a call. The attribute is activated by default; when an accounting "start" or "stop" accounting record is requested, authentication, authorization, and accounting (AAA) adds attribute 196 into the record as part of the standard attribute list. Attribute 196 is valuable because the progress codes, which are sent in accounting "start" and "stop" records, facilitate the debugging of call failures.

Note In accounting "start" records, attribute 196 does not have a value.

Note Progress codes 33, 30, and 67 are generated and seen through debugs on the NAS; all other codes are generated and seen through debugs and the accounting record on the RADIUS server.

How to Configure RADIUS Progress Codes

No configuration is required to configure RADIUS Progress Codes.

How to Verify Attribute 196

To verify attribute 196 in accounting "start" and "stop" records, perform the following steps.

SUMMARY STEPS

1. enable

2. debug aaa accounting

3. show radius statistics

DETAILED STEPS

Troubleshooting Tips

The following example is a sample debug output from the debug ppp negotiation command. This debug output is used to verify that accounting "stop" records have been generated and that attribute 196 (Ascend-Connect-Progress) has a value of 65.

Tue Aug 7 06:21:03 2001

        NAS-IP-Address = 10.0.58.62

        NAS-Port = 20018

        Vendor-Specific = ""

        NAS-Port-Type = ISDN

        User-Name = "peer_16a"

        Called-Station-Id = "5213124"

        Calling-Station-Id = "5212175"

        Acct-Status-Type = Stop

        Acct-Authentic = RADIUS

        Service-Type = Framed-User

        Acct-Session-Id = "00000014"

        Framed-Protocol = PPP

        Framed-IP-Address = 172.16.0.2

        Acct-Input-Octets = 3180

        Acct-Output-Octets = 3186

        Acct-Input-Packets = 40

        Acct-Output-Packets = 40

        Ascend-Connect-Pr = 65

        Acct-Session-Time = 49

        Acct-Delay-Time = 0

        Timestamp = 997190463

        Request-Authenticator = Unverified

Additional References

The following sections provide references related to RADIUS Progress Codes.

Related Documents

Standards

MIBs

RFCs

Technical Assistance

Feature Information for RADIUS Progress Codes

Table 2 lists the release history for this feature.

Not all commands may be available in your Cisco IOS software release. For release information about a specific command, see the command reference documentation.

Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which Cisco IOS and Catalyst OS software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp. An account on Cisco.com is not required.

Note Table 2 lists only the Cisco IOS software release that introduced support for a given feature in a given Cisco IOS software release train. Unless noted otherwise, subsequent releases of that Cisco IOS software release train also support that feature.

Glossary

AAA—authentication, authorization, and accounting. Suite of network security services that provide the primary framework through which access control can be set up on your Cisco router or access server.

attribute—RADIUS Internet Engineering Task Force (IETF) attributes are the original set of 255 standard attributes that are used to communicate AAA information between a client and a server. Because IETF attributes are standard, the attribute data is predefined and well known; thus all clients and servers who exchange AAA information through IETF attributes must agree on attribute data such as the exact meaning of the attributes and the general bounds of the values for each attribute.

EXEC accounting—Provides information about user EXEC terminal sessions of the network access server.

IPCP—IP Control Protocol. A protocol that establishes and configures IP over PPP.

LCP—link control protocol. A protocol that establishes, configures, and tests data-link connections for use by PPP.

network accounting—Provides information for all PPP, Serial Line Internet Protocol (SLIP), or AppleTalk Remote Access Protocol (ARAP) sessions, including packet and byte counts.

PPP—Point-to-Point Protocol. Successor to SLIP that provides router-to-router and host-to-network connections over synchronous and asynchronous circuits. Whereas SLIP was designed to work with IP, PPP was designed to work with several network layer protocols, such as IP, IPX, and ARA. PPP also has built-in security mechanisms, such as CHAP and PAP. PPP relies on two protocols: LCP and NCP.

RADIUS—Remote Authentication Dial-In User Service. RADIUS is a distributed client/server system that secures networks against unauthorized access. In the Cisco implementation, RADIUS clients run on Cisco routers and send authentication requests to a central RADIUS server that contains all user authentication and network service access information.

resource accounting—Provides "start" and "stop" records for calls that have passed user authentication, and provides "stop" records for calls that fail to authenticate.

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