璁＄畻鏈虹綉缁滅綉涓婁綔涓?/p>
(1)
绛旀
1
锛?/p>
鑻ヤ竴缃戠粶绯荤粺涓噰鐢?/p>
CRC
杩涜绾犻敊缂栫爜銆傚凡鐭ヤ紶杈撶殑淇℃伅鐮佷负
1011
锛屽搴旂殑
鐢熸垚澶氶」寮忎负
G(x)=x
4
+x
2
+1
锛岄棶寰楀埌鐨?/p>
CRC
鐮佹槸浠�涔堬紵鑻ユ帴鏀舵椂鏀跺埌杩欐牱涓�涓蹭紶杈撶爜
10010011
锛岄棶鏄惁鍙戠敓浜嗕紶杈撻敊璇紵
绛?/p>
:
锛?/p>
1
锛?/p>
鐢熸垚澶氶」寮忕殑姣旂壒搴忓垪涓猴細
10101
锛?/p>
10110000/10101
锛?/p>
寰楀埌
CRC
涓?/p>
1101
锛?/p>
锛?/p>
2
锛夋槸鍙戠敓浜嗕紶杈撻敊璇�?/p>
2
锛?/p>
鍦?/p>
1000Mb/s
鐨勪互澶綉涓紝鍏舵渶闀挎�荤嚎涓?/p>
500m
锛屼俊鍙蜂紶鎾�熷害涓?/p>
200m/
渭
s
锛?/p>
闂叾鍐茬獊绐楀彛鏄灏懳?/p>
s
锛熷湪姝ょ綉缁滀腑鏈�鐭抚鐨勯暱搴﹀簲涓哄灏?/p>
bit
锛?/p>
绛?/p>
:
锛?/p>
1
锛夊啿绐佺獥鍙ｄ负锛?/p>
2
脳
500m/
锛?/p>
200m/
渭
s
锛?/p>
=5
渭
s
锛?/p>
2
锛夋渶鐭抚闀垮害
涓猴細
100Mb/s
脳
5
渭
s=500bit
3
锛?/p>
鍥犵壒缃戜笂鏈変竴
B
绫荤綉缁滐紝
涓斿垝鍒嗕簡瀛愮綉锛?/p>
鍏跺瓙缃戞帺鐮佷负
255.255.240.0
锛?/p>
鍙垝鍒?/p>
涓哄灏戜釜瀛愮綉锛堝厑璁稿瓙缃戝彿涓哄叏
0
鍜屽叏
1
锛夛紵姣忎釜瀛愮綉鐨勬渶澶氫富鏈烘暟鏄灏戯紵
绛?/p>
:
锛?/p>
1
锛?/p>
8
涓瓙缃?/p>
锛?/p>
2
锛?/p>
锛?/p>
240
锛?/p>
10=
锛?/p>
128+64+32+16
锛?/p>
10=
锛?/p>
11110000
锛?/p>
2
Host-id
鐨勪綅鏁颁负
4+8=12
锛屽洜姝わ紝鏈�澶т富鏈烘暟涓猴細