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Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
OL-26520-01
Chapter 10 Configuring IEEE 802.1x Port-Based Authentication
Configuring 802.1x Authentication
The session ID includes:
• The IP address of the Network Access Device (NAD)
• A monotonically increasing unique 32 bit integer
• The session start time stamp (a 32 bit integer)
This example shows how the session ID appears in the output of the show authentication command.
The session ID in this example is 160000050000000B288508E5:
Switch# show authentication sessions
Interface MAC Address Method Domain Status Session ID
Fa4/0/4 0000.0000.0203 mab DATA Authz Success 160000050000000B288508E5
This is an example of how the session ID appears in the syslog output. The session ID in this example
is also160000050000000B288508E5:
1w0d: %AUTHMGR-5-START: Starting 'mab' for client (0000.0000.0203) on Interface Fa4/0/4
AuditSessionID 160000050000000B288508E5
1w0d: %MAB-5-SUCCESS: Authentication successful for client (0000.0000.0203) on Interface
Fa4/0/4 AuditSessionID 160000050000000B288508E5
1w0d: %AUTHMGR-7-RESULT: Authentication result 'success' from 'mab' for client
(0000.0000.0203) on Interface Fa4/0/4 AuditSessionID 160000050000000B288508E5
The session ID is used by the NAD, the AAA server, and other report-analyzing applications to identify
the client. The ID appears automatically. No configuration is required.
Configuring 802.1x Authentication
• Default 802.1x Authentication Configuration, page 10-37
• 802.1x Authentication Configuration Guidelines, page 10-38
• Configuring 802.1x Readiness Check, page 10-40 (optional)
• Configuring Voice Aware 802.1x Security, page 10-41 (optional)
• Configuring 802.1x Violation Modes, page 10-42 (optional)
• Configuring 802.1x Authentication, page 10-43 (optional)
• Configuring the Switch-to-RADIUS-Server Communication, page 10-45 (required)
• Configuring the Host Mode, page 10-46 (optional)
• Configuring Periodic Re-Authentication, page 10-48 (optional)
• Manually Re-Authenticating a Client Connected to a Port, page 10-49 (optional)
• Changing the Quiet Period, page 10-49 (optional)
• Changing the Switch-to-Client Retransmission Time, page 10-49 (optional)
• Setting the Switch-to-Client Frame-Retransmission Number, page 10-50 (optional)
• Setting the Re-Authentication Number, page 10-51 (optional)
• Configuring 802.1x Accounting, page 10-53 (optional)
• Enabling MAC Move, page 10-51 (optional)
• Enabling MAC Replace, page 10-52 (optional)
• Configuring a Guest VLAN, page 10-54 (optional)