Why EAPOL packet are sended but never received.

[娟 严]

Hi,everyone!
??????My problem is:
????? EAPOL packet are sended but never received. Switch:Cisco Catalyst 2950 series; PC/os: linux
plus: When I use windows XP to authentication, the switch will? response normally.
?????The logs of wpa_supplicant?are as follows:
############################################################################
#wpa_supplicant -ieth0 -c/etc/wpa_supplicant.conf -Dwired -dd
Initializing interface 'eth0' conf '/etc/wpa_supplicant.conf' driver 'wired' ctrl_interface 'N/A' bridge 'N/A'
Configuration file '/etc/wpa_supplicant.conf' -> '/etc/wpa_supplicant.conf'
Reading configuration file '/etc/wpa_supplicant.conf'
ctrl_interface='/var/run/wpa_supplicant'
ctrl_interface_group='wheel' (DEPRECATED)
ap_scan=0
Line: 4 - start of a new network block
key_mgmt: 0x8
eap methods - hexdump(len=16): 00 00 00 00 04 00 00 00 00 00 00 00 00 00 00 00
identity - hexdump_ascii(len=10):
???? 74 65 73 74 40 6c 6f 63 61 6c???????????????????? test??? 
password - hexdump_ascii(len=4):
???? 74 65 73 74?????????????????????????????????????? test??????????? 
eapol_flags=0 (0x0)
Priority group 0
?? id=0 ssid=''
Initializing interface (2) 'eth0'
wpa_driver_wired_init: Added multicast membership with packet socket
Own MAC address: 00:19:db:89:79:21
RSN: flushing PMKID list in the driver
Setting scan request: 0 sec 100000 usec
EAPOL: SUPP_PAE entering state DISCONNECTED
EAPOL: KEY_RX entering state NO_KEY_RECEIVE
EAPOL: SUPP_BE entering state INITIALIZE
EAP: EAP entering state DISABLED
ctrl_interface_group=10 (from group name 'wheel')
Added interface eth0
EAPOL: External notification - portControl=Auto
Already associated with a configured network - generating associated event
Association info event
State: DISCONNECTED -> ASSOCIATED
Associated to a new BSS: BSSID=01:80:c2:00:00:03
No keys have been configured - skip key clearing
Select network based on association information
Network configuration found for the current AP
WPA: clearing AP WPA IE
WPA: clearing AP RSN IE
WPA: clearing own WPA/RSN IE
EAPOL: External notification - portControl=Auto
Associated with 01:80:c2:00:00:03
WPA: Association event - clear replay counter
EAPOL: External notification - portEnabled=0
EAPOL: External notification - portValid=0
EAPOL: External notification - portEnabled=1
EAPOL: SUPP_PAE entering state CONNECTING
EAPOL: SUPP_BE entering state IDLE
EAP: EAP entering state INITIALIZE
EAP: EAP entering state IDLE
Cancelling scan request
EAPOL: startWhen --> 0
EAPOL: SUPP_PAE entering state CONNECTING
EAPOL: txStart
TX EAPOL: dst=01:80:c2:00:00:03
TX EAPOL - hexdump(len=4): 01 01 00 00
EAPOL: startWhen --> 0
EAPOL: SUPP_PAE entering state CONNECTING
EAPOL: txStart
TX EAPOL: dst=01:80:c2:00:00:03
TX EAPOL - hexdump(len=4): 01 01 00 00
EAPOL: idleWhile --> 0
EAP: EAP entering state FAILURE
CTRL-EVENT-EAP-FAILURE EAP authentication failed
EAPOL: SUPP_PAE entering state AUTHENTICATING
EAPOL: SUPP_BE entering state FAIL
EAPOL: SUPP_PAE entering state HELD
EAPOL: SUPP_BE entering state IDLE
EAPOL authentication completed unsuccessfully
EAPOL: startWhen --> 0
EAPOL: heldWhile --> 0
EAPOL: disable timer tick
EAPOL: SUPP_PAE entering state CONNECTING
EAPOL: enable timer tick
EAPOL: SUPP_PAE entering state AUTHENTICATING
EAPOL: SUPP_BE entering state FAIL
EAPOL: SUPP_PAE entering state HELD
EAPOL: SUPP_BE entering state IDLE
EAPOL authentication completed unsuccessfully?? //repeat
.....
####################################################
And My wpa_supplicant.conf is as follows:
####################################################
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
ap_scan=0
network={
?key_mgmt=IEEE8021X
?eap=MD5
?identity="test"
?password="test"
?eapol_flags=0
}


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