# iwconfig
ath0 802.11b/g NIC ESSID:"dlink"
Mode:Managed Frequency=2.437 GHz Access Point: 00:22:B0:68:06:F9
Bit Rate: 0 kb/s
Retry: off RTS thr=9999 B Fragment thr: off
Encryption key:****-****-** Security mode: open
Power Management: off
Link Quality:91/100 Signal level:-45 dBm Noise level:-96 dBm
Rx invalid nwid: 0 Rx invalid crypt: 0 Rx invalid frag: 0
Tx excessive retries: 0 Invalid misc:527 Missed beacon: 0
其中：Rx invalid nwid，Rx invalid crypt， Rx invalid frag
和 Tx excessive retries，Invalid misc，Missed beacon
是什么意思啊？
万分感激能解答的朋友！
