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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
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 Address 192. 10. 10. 6 11000000.00001010.00001010.00000110 Net Mask 255.255.255. 0 11111111.11111111.11111111.00000000 AND ------------------ --------------------------------------------- Network Number 192.10.10.0 11000000.00001010.00001010.00000000
Net Mask ¦³ ©Ò ¿× ªº ¹w ³] È , ¦p ¤U ©Ò ¥Ü
Class IP Address ½d ³ò Net Mask A 1.0.0.0-126.255.255.255 255.0.0.0 B 128.0.0.0-191.255.255.255 255.255.0.0 C 192.0.0.0-223.255.255.255 255.255.255.0
¦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 255.255.255.0 11111111.11111111.11111111.00000000 1 255.255.255.128 11111111.11111111.11111111.10000000 2 255.255.255.192 11111111.11111111.11111111.11000000 4 255.255.255.224 11111111.11111111.11111111.11100000 8 255.255.255.240 11111111.11111111.11111111.11110000 16 255.255.255.248 11111111.11111111.11111111.11111000 32 255.255.255.252 11111111.11111111.11111111.11111100 64
¥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¸¹ Network Number Broadcast ¥i¨Ï¥Î¤§ IP Address 1 203.67.10.0 203.67.10.31 203.67.10.1-203.67.10.30 2 203.67.10.32 203.67.10.63 203.67.10.33-203.67.10.62 3 203.67.10.64 203.67.10.95 203.67.10.65-203.67.10.94 4 203.67.10.96 203.67.10.127 203.67.10.97-203.67.10.126 5 203.67.10.128 203.67.10.159 203.67.10.129-203.67.10.158 6 203.67.10.160 203.67.10.191 203.67.10.161-203.67.10.190 7 203.67.10.192 203.67.10.223 203.67.10.193-203.67.10.222 8 203.67.10.224 203.67.10.255 203.67.10.225-203.67.10.254
¥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
¨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 ¤@ ¤¤ 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 ¬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 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
¦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¸¹ Destination Network Net Mask Gateway Metric 1 203.67.10.128 255.255.255.224 203.67.10.158 0 2 203.67.10.0 255.255.255.224 203.67.10.30 0 3 203.67.10.160 255.255.255.224 203.67.10.190 0 4 Default 192.10.10.1 1
¹Ï ¤T Router 1 ¤§ Routing Table
§Ç¸¹ Destination Network Net Mask Gateway Metric 1 203.67.10.0 255.255.255.224 203.67.10.30 0 2 203.67.10.32 255.255.255.224 203.67.10.62 0 3 203.67.10.64 255.255.255.224 203.67.10.94 0 4 203.67.10.96 255.255.255.224 203.67.10.126 0 5 203.67.10.128 255.255.255.224 203.67.10.158 0 6 203.67.10.160 255.255.255.224 203.67.10.190 0 7 203.67.10.192 255.255.255.224 155.10.10.1 1 8 Default 192.10.10.1 1
¹Ï ¤T Router 2 ¤§ Routing Table
§Ç¸¹ Destination Network Net Mask Gateway Metric 1 203.67.10.192 255.255.255.224 203.67.10.222 0 2 Default 155.10.10.2 1