TCP/IP Subnet ªº¹B¥Î


­Y ¤½ ¥q ¤£ ¤W Internet , ¨º ¤@ ©w ¤£ ·| ·Ð ´o IP Address ªº °Ý ÃD , ¦] ¬° ¥i ¥H ¥ô ·N ¨Ï ¥Î ©Ò ¦³ ªº IP Address , ¤£ ºÞ ¬O A Class ©Î ¬O B Class , ³o ­Ó ®É ­Ô ¤£ ·| ·Q ¨ì ­n ¥Î SubNet , ¦ý ­Y ¬O ¤W Internet ¨º IP Address «K À± ¨¬ ¬Ã ¶Q ¤F , ¥Ø «e ¥þ ²y ¤@ °} Internet ¼ö , IP Address ¤w ¸g ·U ¨Ó ·U ¤Ö ¤F , ¦Ó ©Ò ¥Ó ½Ð ªº IP Address ¥Ø «e ¤] ÁÍ «O ¦u , ¦Ó ¥B ¥u ¦³ ¸g ¥Ó ½Ð ªº IP Address ¯à ¦b Internet ¨Ï ¥Î , ¦ý ¹ï ¬Y ¨Ç ¤½ ¥q ¥u ¯à ¥Ó ½Ð ¨ì ¤@ ­Ó C CLass ªº IP Address , ¦ý ¤S ¦³ ¦h ­Ó ÂI »Ý ­n ¨Ï ¥Î , ¨º ³o ®É «K »Ý ­n ¨Ï ¥Î ¨ì Subnet , ³o ½g µu ¤å »¡ ©ú Subnet ªº ­ì ²z ¤Î ¦p ¦ó ³W ¹º ¡C


Subnet Mask ªº¤¶²Ð

³] ©w ¥ô ¦ó ºô ¸ô ¤W ªº ¥ô ¦ó ³] ³Æ ¤£ ºÞ ¬O ¥D ¾÷ ¡B PC ¡B Router µ¥ ¬Ò »Ý ­n ³] ©w IP Address , ¦Ó ¸ò ÀH µÛ IP Address ªº ¬O ©Ò ¿× ªº Net Mask , ³o ­Ó Net Mask ¥D ­n ªº ¥Ø ªº ¬O ¥Ñ IP Address ¤¤ ¤] ¯à Àò ±o Network Number , ¤] ´N ¬O »¡ IP Address ©M Net Mask §@ AND ¦Ó ±o ¨ì Network Number , ¦p ¤U ©Ò ¥Ü


IP Address192. 10. 10. 611000000.00001010.00001010.00000110
Net Mask255.255.255. 011111111.11111111.11111111.00000000
AND---------------------------------------------------------------
Network Number192.10.10.011000000.00001010.00001010.00000000


Net Mask ¦³ ©Ò ¿× ªº ¹w ³] ­È , ¦p ¤U ©Ò ¥Ü


ClassIP Address ½d ³òNet Mask
A1.0.0.0-126.255.255.255255.0.0.0
B128.0.0.0-191.255.255.255255.255.0.0
C192.0.0.0-223.255.255.255255.255.255.0


¦b ¹w ³] ªº Net Mask ³£ ¥u ¦³ 255 ªº ­È , ¦b ½Í ¨ì Subnet Mask ®É ³o ­Ó ­È «K ¤£ ¤@ ©w ¬O 255 ¤F ¡C
¦b §¹ ¾ã ¤@ ²Õ C Class ¤¤ ¦p 203.67.10.0-203.67.10.255 NetMask 255.255.255.0 , 203.67.10.0 ºÙ ¤§ Network Number (±N IP Address ©M Netmask §@ AND) , ¦Ó 203.67.10.255 ¬O Broadcast ªº IP Address , ©Ò ¥H ³o¥ ¨â ªÌ ¬Ò ¤£ ¯à ¨Ï ¥Î ,¹ê »Ú ¥u ¯à ¨Ï ¥Î 203.67.10.1 -- 203.67.10.254 µ¥ 254 ­Ó IP Address , ³o ¬O ¥H 255.255.255.0 §@ Net Mask ªº µ² ªG , ¦Ó ©Ò ¿× Subnet Msk ©| ¥i ±N ¾ã ²Õ C Class ¤À ¦¨ ¼Æ ²Õ Network Number , ³o ­n ¦b NEt Mask §@ ¤â ¸} , ­Y ¬O ­n ±N ¾ã ²Õ C CLass ¤À ¦¨ 2 ­Ó Network Number ¨º Net Mask ³] ©w ¬° 255.255.255.192 , ­Y ¬O ­n ±N ¾ã ²Õ C CLass ¤À ¦¨ 8 ²Õ Network Number «h Net Mask ­n ¬° 255.255.255.224 , ³o ¬O «ç »ò ¨Ó ªº , ¥Ñ ¥H ¤W ª¾ ¹D Network Number ¬O ¥Ñ IP Address ©M Net Mask §@ AND ¦Ó ¨Ó ªº , ¦Ó ¥B ±N Net Mask ¥H ¤G ¶i ¦ì ªí ¥Ü ªk ª¾ ¹D ¬O 1 ªº ·| «O ¯d , ¦Ó ¬° 0 ªº ¥h ±¼


192.10.10.193--11000000.00001010.00001010.10000001
255.255.255.0--11111111.11111111.11111111.00000000
--------------------------------------------------------------
192.10.10.0--11000000.00001010.00001010.00000000


¥H ¤W ¬O ¥H 255.255.255.0 ¬° Net Mask ªº µ² ªG , Network Number ¬O 192.10.10.0 , ­Y ¬O ¨Ï ¥Î 255.255.255.224 §@ Net Mask µ² ªG «K ¦³ ©Ò ¤£ ¦P


192.10.10.193--11000000.00001010.00001010.10000000
255.255.255.224--11111111.11111111.11111111.11100000
--------------------------------------------------------------
192.10.10.192--11000000.00001010.00001010.10000000


¦¹ ®É Network Number ÅÜ ¦¨ ¤F 192.10.10.192 , ³o «K ¬O Subnet ¡C
¨º ­n ¦p ¦ó ¨M ©w ©Ò ¨Ï ¥Î ªº Net Mask , 255.255.255.224 ¥H ¤G ¶i ¦ì ªí ¥Ü ªk ¬° 11111111.11111111.11111111.11100000 , ÅÜ ¤Æ ¬O ¦b ³Ì «á ¤@ ²Õ , 11100000 «K ¬O 224 , ¥H ¤T ­Ó Bit ¥i ªí ¥Ü 2 ªº 3 ¦¸ ¤è «K ¬O 8 ­Ó Network Number


Net Mask¤G¶i¦ìªí¥Üªk¥i¤À´X­Ó Network
255.255.255.011111111.11111111.11111111.000000001
255.255.255.12811111111.11111111.11111111.100000002
255.255.255.19211111111.11111111.11111111.110000004
255.255.255.22411111111.11111111.11111111.111000008
255.255.255.24011111111.11111111.11111111.1111000016
255.255.255.24811111111.11111111.11111111.1111100032
255.255.255.25211111111.11111111.11111111.1111110064


¥H ¤U ¨Ï ¥Î 255.255.255.224 ±N C Class 203.67.10.0 ¤À ¦¨ 8 ²Õ Network Number , ¦U ­Ó Network Number ¤Î ¨ä Broadcast IP Address ¤Î ¥i ¨Ï ¥Î ¤§ IP Address


§Ç¸¹Network NumberBroadcast¥i¨Ï¥Î¤§ IP Address
1203.67.10.0203.67.10.31203.67.10.1-203.67.10.30
2203.67.10.32203.67.10.63203.67.10.33-203.67.10.62
3203.67.10.64203.67.10.95203.67.10.65-203.67.10.94
4203.67.10.96203.67.10.127203.67.10.97-203.67.10.126
5203.67.10.128203.67.10.159203.67.10.129-203.67.10.158
6203.67.10.160203.67.10.191203.67.10.161-203.67.10.190
7203.67.10.192203.67.10.223203.67.10.193-203.67.10.222
8203.67.10.224203.67.10.255203.67.10.225-203.67.10.254


¥i Åç ÃÒ ©Ò ¨Ï ¥Î ªº IP Address ¬O §_ ¦p ¤W ªí ©Ò ¥Ü


203.67.10.115--11001011.01000011.00001010.01110011
255.255.255.224--11111111.11111111.11111111.11100000
--------------------------------------------------------------
203.67.10.96--11001011.01000011.00001010.01100000


203.67.10.55--11001011.01000011.00001010.00110111
255.255.255.224--11111111.11111111.11111111.11100000
--------------------------------------------------------------
203.67.10.32--11001011.01000011.00001010.00100000


¨ä ¥L ªº Net Mask ©Ò ¤À ¦¨ ªº Network Number ¥i ¦Û ¦æ ¥H ¤W ­z ¤è ªk ¦Û ¦æ ±À ºt ¥X ¨Ó ¡C


Subnet ªºÀ³¥Î

¨Ï ¥Î Subnet ¬O ­n ¸Ñ ¨M ¥u ¦³ ¤@ ²Õ C Class ¦ý »Ý ­n ¼Æ ­Ó Network Number ªº °Ý ÃD , ¨Ã ¤£ ¬O ¸Ñ ¨M IP Address ¤£ °÷ ¥Î ªº °Ý ÃD , ¦] ¬° ¨Ï ¥Î Subnet ¤Ï ¦Ó ¯à ¨Ï ¥Î ªº IP Address ·| ÅÜ ¤Ö , Subnet ³q ±` ¬O ¨Ï ¥Î ¦b Á` ¤½ ¥q ¦b ¥x ¥_ , ¦ý ¤À ¤½ ¥q ¦b ¥x ¤¤ , ¨â ªÌ ¤§ ¶¡ ¨Ï ¥Î Router ³s ½u , ¦P ®É ¤] ¤W Internet , ¦ý ¥u ¥Ó ½Ð ¨ì ¤@ ²Õ C CLass IP Address , ¹L Router ¤S »Ý ¤£ ¦P ªº Network , ©Ò ¥H ¦¹ ®É ´N ¥² ¶· ¨Ï ¥Î ¨ì Subnet , ·í µM ¤G ¿ì ¤½ ¥q ¶¡ ¥i ¥H Remote Bridge ³s ±µ , ¨º «K ¨S ¦³ ¨Ï ¥Î Subnet ªº °Ý ÃD , ³o ÂI ¦b ¦¹ ¤£ °Q ½× , ©Ò ¥H ¦b ¥H ¤W ±¡ ªp ¤U ªº ºô ¸ô ³s ½u ¬[ ºc ¤Î IP Address ªº ¨Ï ¥Î




¹Ï ¤@

¹Ï ¤@ ¤¤ Router 1 ¤Î Router 2 ©Ò ¦b ªº Network Number ¬O 203.67.10.0 , ¥i ¨Ï ¥Î ªº IP Address ¬O 203.67.10.1 -- 203.67.10.30 , Router 1 ªº IP Address ¬O 203.67.10.30 , Router 2 ªº IP Address ¬° 203.67.10.29 , ©Ò ¥H ¨ä ¥L Hosts ¥i ¥Î ªº IP Address ¬° 203.67.10.1 -- 203.67.10.28 , Router 3 ©Ò ¦b ªº Network Number ¬O 203.67.10.192 , ¥i ¨Ï ¥Î ªº IP Address ¬O 203.67.10.193 -- 203.67.10.222 , Router 3 ¨Ï ¥Î ªº IP Address ¬° 203.67.10.222 , ©Ò ¥H ¨ä ¥L ªº Hosts ¥i ¨Ï ¥Î ªº IP Address ¬° 203.67.10.193 -- 203.67.10.221 , ¥H ¤W ªº ½d ³ò ¥i °Ñ ¦Ò ¤W ªí ¤§ ¸ê ®Æ ¡C
¤W ¹Ï ¬O ±N Subnet ¹B ¥Î ¦b WAN ªº Àô ¹Ò , ­Y ¦b LAN ¤] »Ý ­n ¼Æ ­Ó Network Number ¤] ¥i ¨Ï ¥Î




¹Ï ¤G

¹Ï ¤G ¬O LAN Àô ¹Ò ¤¤ ¨Ï ¥Î Subnet , ¨ä ¤¤ Router ªº ¤¶ ­± 1 ©Ò ©w ªº IP Address ¬° 203.67.10.158 , Net Mask ¬° 255.255.255.224 , ©Ò ¥H ¨ä Network Number ¬° 203.67.10.128 , ©Ò ¥H ¦b ³o ­Ó LAN ¤W Host ©Ò ¯à ¨Ï ¥Î ªº IP Address ¬° 203.67.10.129-203.67.10.157 , ³s ¦P Router ©Ò ©w ªº IP Address Á` ¦@ ¦³ 30 ­Ó IP Address ¥i ¨Ï ¥Î¡C ¨ä ¥L ªº ¤¶ ­± ¤] ¬O ¤@ ¼Ë ¡C
Subnet ¥i ¨Ï ¥Î ©ó WAN ¤S ¥i ¨Ï ¥Î ©ó LAN , ·í µM ¤] ¥i ¥H ¦b LAN ¤Î WAN ¤¤ ¦P ®É ¨Ï ¥Î¡C ¤S ±N ¤@ ­Ó C Class ¥H Net Mask 255.255.255.224 ¤À ¦¨ 8 ­Ó Network , ¨C ­Ó Subnet ¦© ±¼ Network Number ¤Î Broadcast IP Address «h ¥u ¯à ¨Ï ¥Î 30 ­Ó IP Address , ¦ý ¬O ¦b ¹ê »Ú ¹B ¥Î ¤W ¥i ¯à ¬O ¤@ ­Ó Network »Ý ­n 100 ­Ó IP Address , ¦Ó ¥t ¤@ ­Ó »Ý ­n 60 ­Ó IP Address , ³o ¥i ¥H ¨Ï ¥Î Router ªº Multi-IP-Address ªº ¥\ ¯à , ¤] ´N ¬O ¦b Router ªº ¤@ ­Ó ¤¶ ­± ¤W ¥i ©w ¸q ¦h ­Ó IP Address , ¨º ¦b ³o ­Ó ºô ¸ô ¤W «K ¦P ®É ¦³ ¦h ­Ó Network Number , ¥H ¤U ¬O ¤@ ­Ó ¹ê »Ú ¨Ï ¥Î Subnet ªº ½d ¨Ò



¹Ï ¤T

¹Ï ¤T ªº ³] ©w ¤è ¦¡ Router 1 ¤¶ ­± 1 ªº Network Number ¬° 203.67.10.1 , Router 1 ¤¶ ­± 2 ³] ©w ¤F 5 ­Ó IP Address , ©Ò ¥H ¦b ³o ­Ó LAN ¤W ¦³ 5 ­Ó Network Number , ©Ò ¯à ¨Ï ¥Î ªº IP Address ¦@ ¦³ 5 x 30 = 150 ­Ó IP Address , ³o ¼Ë ªº ³] ©w ¦b ¨Ï ¥Î Subnet ®É IP Address ªº ¹B ¥Î «K §ó ¨ã ¼u ©Ê , ¦Ó Router 2 ¤] ¨Ï ¥Î ¤@ ­Ó Network Number 203.67.10.192 , ³o ¬O ¤@ ­Ó ¹ê »Ú ¦b ¨Ï ¥Î ªº ®× ¨Ò , ¹B §@ ¥¿ ±` ¡C


¨Ï¥Î Subnet ®É Routing Table ªº³]©w

¦b ¤£ ¨Ï ¥Î Subnet ªº ±¡ ªp ¤U ¦b Router ªº Routing Table ªº Destination Network ¬Ò ¬O ¨Ï ¥Î ¦p 203.67.10.0 ·í Network Number , ¦ý ¬O ¦b ¨Ï ¥Î Subnet ®É , Network Number ¥i ¯à ¬O 203.67.10.32 ©Î 203.67.10.128 , ³o ­n µø ¨Ï ¥Î ¦ó ºØ Net Mask ¦Ó ©w , ³o ¦b «e ­± ¤w ¸g »¡ ©ú ¹L ¤F , ©Ò ¥H Router ªº Routing Table ¦³ ¨Ç ¤£ ¤@ ¼Ë , ¥H ¤U ¦C ¤F ¹Ï ¤G ¤Î ¹Ï ¤T Router ªº Routing Table ªº ³] ©w

¹Ï ¤G Router ¤§ Routing Table
§Ç¸¹Destination NetworkNet MaskGatewayMetric
1203.67.10.128255.255.255.224203.67.10.1580
2203.67.10.0255.255.255.224203.67.10.300
3203.67.10.160255.255.255.224203.67.10.1900
4Default192.10.10.11


¹Ï ¤T Router 1 ¤§ Routing Table
§Ç¸¹Destination NetworkNet MaskGatewayMetric
1203.67.10.0255.255.255.224203.67.10.300
2203.67.10.32255.255.255.224203.67.10.620
3203.67.10.64255.255.255.224203.67.10.940
4203.67.10.96255.255.255.224203.67.10.1260
5203.67.10.128255.255.255.224203.67.10.1580
6203.67.10.160255.255.255.224203.67.10.1900
7203.67.10.192255.255.255.224155.10.10.11
8Default192.10.10.11


¹Ï ¤T Router 2 ¤§ Routing Table
§Ç¸¹Destination NetworkNet MaskGatewayMetric
1203.67.10.192255.255.255.224203.67.10.2220
2Default155.10.10.21



Lastest Updated : 1996 ¦~ 02 ¤ë 06 ¤é

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