RADIUS Attribute 82: Tunnel Assignment ID
Last Updated: July 31, 2009
Finding Feature Information
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 Attribute 82: Tunnel Assignment ID" section.
Use Cisco Feature Navigator to find information about platform support and Cisco IOS XE 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
•How to Configure RADIUS Attribute 82: Tunnel Assignment ID
•Information about RADIUS Attribute 82: Tunnel Assignment ID
•How to Configure RADIUS Attribute 82: Tunnel Assignment ID
•Configuration Examples
•Additional References
•Feature Information for RADIUS Attribute 82: Tunnel Assignment ID
Restrictions for Radius Attribute 82: Tunnel Assignment ID
This feature is designed only for VPDN dial-in applications. It does not support VPDN dial-out.
Information about RADIUS Attribute 82: Tunnel Assignment ID
The RADIUS Attribute 82: Tunnel Assignment ID feature allows the Layer 2 Transport Protocol access concentrator (LAC) to group users from different per-user or domain RADIUS profiles into the same active tunnel. The RADIUS Attribute 82: Tunnel Assignment ID feature defines a new avpair, Tunnel-Assignment-ID, which allows the LAC to group users from different RADIUS profiles into the same tunnel if the chosen endpoint, tunnel type, and Tunnel-Assignment-ID are identical. This feature introduces new software functionality. No new commands are introduced with this feature.
Benefits
The RADIUS Attribute 82: Tunnel Assignment ID feature improves LAC and L2TP network server (LNS) performance by reducing memory usage, because fewer tunnel data structures must be maintained. This feature allows the LAC and LNS to handle a higher volume of users without negatively impacting router performance.
How to Configure RADIUS Attribute 82: Tunnel Assignment ID
There are not any specific configuration tasks associated with support of this feature.
Verifying RADIUS Attribute 82
To verify that RADIUS attribute 82 is being used by the LAC during tunnel authorization, use the following privileged EXEC command:
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Router# debug radius |
Displays information associated with RADIUS. The output of this command shows whether attribute 82 is being sent in access requests. |
Configuration Examples
This section provides the following configuration examples:
•LAC Configuration Example
•LNS Configuration Example
•RADIUS Configuration Example
LAC Configuration Example
The following example shows a sample LAC configuration when the VPDN group is defined on the router:
aaa authentication ppp default local
aaa authorization network default local
bba-group pppoe bba_group1
l2tp tunnel receive-window 100
l2tp tunnel nosession-timeout 30
l2tp tunnel retransmit retries 5
l2tp tunnel retransmit timeout min 2
l2tp tunnel retransmit timeout max 8
l2tp tunnel password tunnel1
interface virtual-template 1
no logging event link-status
The following example shows a sample LAC configuration when the VPDN group is defined in RADIUS:
aaa authentication ppp default group radius
aaa authorization network default radius
bba-group pppoe bba_group1
interface virtual-template 1
no logging event link-status
LNS Configuration Example
The following example configures VPDN on the LNS:
aaa authentication ppp default group radius
aaa authorization network default group radius
terminate-from hostname tb162_LAC1
l2tp tunnel password 0 hello1
ip address 10.1.1.3 255.255.255.0
interface Virtual-Template1
peer default ip address pool mypool
ip local pool mypool 10.1.1.10 10.1.1.50
radius-server host lns-radiusd auth-port 1645 acct-port 1646
radius-server retransmit 3
RADIUS Configuration Example
The following examples configure the RADIUS server to group sessions in a tunnel:
Per-User Configuration
user@router.com Password = "cisco" Service-Type = Outbound,
Tunnel-Server-Endpoint = :1:"10.14.10.54",
Tunnel-Assignment-Id = :1:"router"
client@router.com Password = "cisco" Service-Type = Outbound,
Tunnel-Server-Endpoint = :1:"10.14.10.54",
Tunnel-Assignment-Id = :1:"router"
Domain Configuration
eng.router.com Password = "cisco" Service-Type = Outbound,
Tunnel-Server-Endpoint = :1:"10.14.10.54",
Tunnel-Assignment-Id = :1:"router"
sales.router.com Password = "cisco" Service-Type = Outbound,
Tunnel-Server-Endpoint = :1:"10.14.10.54",
Tunnel-Assignment-Id = :1:"router"
Additional References
The following sections provide references related to the Configuring RADIUS Attribute 82: Tunnel Assignment ID.
Related Documents
Standards
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No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature. |
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MIBs
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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 XE software releases, and feature sets, use Cisco MIB Locator found at the following URL: http://www.cisco.com/go/mibs |
RFCs
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No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified by this feature. |
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Technical Assistance
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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. |
http://www.cisco.com/techsupport |
Feature Information for RADIUS Attribute 82: Tunnel Assignment ID
Table 78 lists the release history for this feature.
Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which Cisco IOS XE 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 78 lists only the Cisco IOS XE software release that introduced support for a given feature in a given Cisco IOS XE software release train. Unless noted otherwise, subsequent releases of that Cisco IOS XE software release train also support that feature.
Table 78 Feature Information for RADIUS Attribute 82: Tunnel Assignment ID
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RADIUS Attribute 82: Tunnel Assignment Id |
Cisco IOS XE Release 2.1 |
The RADIUS Attribute 82: Tunnel Assignment ID feature allows the Layer 2 Transport Protocol access concentrator (LAC) to group users from different per-user or domain RADIUS profiles into the same active tunnel. In Cisco IOS XE Release 2.1, support was added for the Cisco ASR 1000 Series Aggregation Services Routers. |
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