Cisco Systems DL-2159-05 manual Eapdiag2on, Vxdiagarpshow, 13-18

Chapter 13 Diagnostics and Troubleshooting

Using Command-Line Diagnostics

:eap_diag2_on

Use the :eap_diag2_on command to display the packet contents of each authentication step for client devices authenticating through the access point. The packet contents for one authentication step might look like this example:

EAP: Sending Identity Request
00c15730:	01	00	00	28	01	21	00	28	01	00	6e	65	74	77	6f	72	*...(.!.(..networ*
00c15740:	6b	69	64	3d	45	41	50	33	2c	6e	61	73	69	64	3d	45	*kid=EAP3,nasid=E*
00c15750:	41	50	33	2c	70	6f	72	74	69	64	3d	30					*AP3,portid=0....*

The first group of characters in the packet contents (00c15730, for example) is the hexadecimal address of the memory buffer that contains the packet. The middle group of characters (01 00 00 28 01 21 00 28 01 00 6e 65 74 77 6f 72, for example) is the packet contents in hexadecimal format. The last group of characters (*...(.!.(..networ*, for example) is an ASCII representation of the packet contents.

For information on interpreting the content of packets sent between the access point and the RADIUS server, refer to the Internet Society’s RFC 2865. This document is available at http://www.armware.dk/RFC/rfc/rfc2865.html as well as on many other websites. The IEEE’s 802.1x authentication standard helps define the content of packets sent between client devices and the access point and is available to IEEE members at http://www.ieee.org.

Follow the steps in the “Entering Diagnostic Commands” section on page 13-16to open the CLI and enter the :eap_diag2_on command.

:vxdiag_arpshow

Use the :vxdiag_arpshow command to display the access point’s ARP table. The ARP table might look like the following example:

LINK LEVEL ARP TABLE
destination	gateway	flags Refcnt Use Interface

----------------------------------------------------------------

10.84.139.129 00:05:31:d3:c0:9 405 1 0 emac0

----------------------------------------------------------------

These are descriptions for each column in the ARP table:

•Destination—IP address of the host entry

•Gateway—MAC address of the destination

•Flags—see Table 13-2for a list of flags

•Refcnt—the number of hosts referencing this address

Table 13-2 Flag Definitions

		Flag Value	Definition
		0x1	Route is usable
		0x2	Destination is a gateway
		0x4	Host of specific routing entry
		0x8	Host or net unreachable
		0x10	Created dynamically (by redirect)
		0x20	Modified dynamically (by redirect)
		0x40	Message confirmed
	Cisco Aironet 1200 Series Access Point Software Configuration Guide
13-18				OL-2159-05