Cisco OL-15491-01 - Manual (Page 120)

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Cisco Content Services Gateway - 2nd Generation Release 2.0 Installation and Configuration Guide
OL-15491-01
Appendix A CSG2 Command Reference
ip csg radius correlation
ip csg radius correlation
To enable RADIUS correlation processing by the CSG2, use the ip csg radius correlation command in
global configuration mode. To disable RADIUS correlation processing, use the no form of this
command.
ip csg radius correlation
no ip csg radius correlation
Syntax Description This command has no arguments or keywords.
Defaults The CSG2 does not perform RADIUS correlation processing.
Command Modes Global configuration
Command History
Usage Guidelines A retransmitted RADIUS Stop might cause the CSG2 to remove a subscriber entry from the CSG2 User
Table when the entry should not be removed.
To avoid this problem, the CSG2 must be able to associate a session correlator from the RADIUS Start
message with a subscriber entry in the User Table, and compare that correlator with the correlator in the
RADIUS Stop message. If the correlators match, the CSG2 deletes the subscriber entry; otherwise, the
CSG2 retains the entry in the User Table.
The CSG2 can use the Acct-Session-Id (attribute 44) as the correlator, or it can use the following
vendor-specific attribute (VSA) subattribute (attribute 26, Vendor-Id 9, subattribute 1):
csg:user_session_correlator=<string>
If both attributes are included in the RADIUS Start or RADIUS Stop message, the CSG2 uses the VSA
subattribute.
To enable this capability, enter the ip csg radius correlation command.
• If there is no correlator saved in the User Table entry, the CSG2 deletes the entry.
• If there is a correlator saved in the User Table entry, the CSG2 compares it to the correlator in the
RADIUS Stop. If the correlators match, the CSG2 deletes the entry; if they do not match, or if there
is no correlator in the RADIUS Stop, the CSG2 retains the entry in the User Table.
To disable this capability, enter the no ip csg radius correlation command. The CSG2 deletes User
Table entries without subscriber session correlation.
Examples The following example shows how to enable RADIUS correlation processing by the CSG2.
ip csg radius correlation
Release Modification
12.4(11)MD This command was introduced.