API tools faq
paste
Advertisement
tirabytes

Subnetting

tirabytes
Jul 28th, 2011
425
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
text 10.44 KB | None | 0 0
raw download clone embed print report
  1. Netmask Netmask (binary) CIDR Notes
  2. _____________________________________________________________________________
  3. 255.255.255.255 11111111.11111111.11111111.11111111 /32 Host (single addr)
  4. 255.255.255.254 11111111.11111111.11111111.11111110 /31 Unuseable
  5. 255.255.255.252 11111111.11111111.11111111.11111100 /30 2 useable
  6. 255.255.255.248 11111111.11111111.11111111.11111000 /29 6 useable
  7. 255.255.255.240 11111111.11111111.11111111.11110000 /28 14 useable
  8. 255.255.255.224 11111111.11111111.11111111.11100000 /27 30 useable
  9. 255.255.255.192 11111111.11111111.11111111.11000000 /26 62 useable
  10. 255.255.255.128 11111111.11111111.11111111.10000000 /25 126 useable
  11. 255.255.255.0 11111111.11111111.11111111.00000000 /24 "Class C" 254 useable
  12.  
  13. 255.255.254.0 11111111.11111111.11111110.00000000 /23 2 Class C's
  14. 255.255.252.0 11111111.11111111.11111100.00000000 /22 4 Class C's
  15. 255.255.248.0 11111111.11111111.11111000.00000000 /21 8 Class C's
  16. 255.255.240.0 11111111.11111111.11110000.00000000 /20 16 Class C's
  17. 255.255.224.0 11111111.11111111.11100000.00000000 /19 32 Class C's
  18. 255.255.192.0 11111111.11111111.11000000.00000000 /18 64 Class C's
  19. 255.255.128.0 11111111.11111111.10000000.00000000 /17 128 Class C's
  20. 255.255.0.0 11111111.11111111.00000000.00000000 /16 "Class B"
  21.  
  22. 255.254.0.0 11111111.11111110.00000000.00000000 /15 2 Class B's
  23. 255.252.0.0 11111111.11111100.00000000.00000000 /14 4 Class B's
  24. 255.248.0.0 11111111.11111000.00000000.00000000 /13 8 Class B's
  25. 255.240.0.0 11111111.11110000.00000000.00000000 /12 16 Class B's
  26. 255.224.0.0 11111111.11100000.00000000.00000000 /11 32 Class B's
  27. 255.192.0.0 11111111.11000000.00000000.00000000 /10 64 Class B's
  28. 255.128.0.0 11111111.10000000.00000000.00000000 /9 128 Class B's
  29. 255.0.0.0 11111111.00000000.00000000.00000000 /8 "Class A"
  30.  
  31. 254.0.0.0 11111110.00000000.00000000.00000000 /7
  32. 252.0.0.0 11111100.00000000.00000000.00000000 /6
  33. 248.0.0.0 11111000.00000000.00000000.00000000 /5
  34. 240.0.0.0 11110000.00000000.00000000.00000000 /4
  35. 224.0.0.0 11100000.00000000.00000000.00000000 /3
  36. 192.0.0.0 11000000.00000000.00000000.00000000 /2
  37. 128.0.0.0 10000000.00000000.00000000.00000000 /1
  38. 0.0.0.0 00000000.00000000.00000000.00000000 /0 IP space
  39.  
  40. Net Host Total
  41. Net Addr Addr Addr Number
  42. Class Range NetMask Bits Bits of hosts
  43. ----------------------------------------------------------
  44. A 0-127 255.0.0.0 8 24 16777216 (i.e. 114.0.0.0)
  45. B 128-191 255.255.0.0 16 16 65536 (i.e. 150.0.0.0)
  46. C 192-254 255.255.255.0 24 8 256 (i.e. 199.0.0.0)
  47. D 224-239 (multicast)
  48. E 240-255 (reserved)
  49. F 208-215 255.255.255.240 28 4 16
  50. G 216/8 ARIN - North America
  51. G 217/8 RIPE NCC - Europe
  52. G 218-219/8 APNIC
  53. H 220-221 255.255.255.248 29 3 8 (reserved)
  54. K 222-223 255.255.255.254 31 1 2 (reserved)
  55. (ref: RFC1375 & http://www.iana.org/assignments/ipv4-address-space )
  56. ( http://www.iana.org/numbers.htm )
  57. ----------------------------------------------------------
  58.  
  59. The current list of special use prefixes:
  60. 0.0.0.0/8
  61. 127.0.0.0/8
  62. 192.0.2.0/24
  63. 10.0.0.0/8
  64. 172.16.0.0/12
  65. 192.168.0.0/16
  66. 169.254.0.0/16
  67. all D/E space
  68. (ref: RFC1918 http://www.rfc-editor.org/rfc/rfc1918.txt )
  69. ( or ftp://ftp.isi.edu/in-notes/rfc1918.txt )
  70. (rfc search: http://www.rfc-editor.org/rfcsearch.html )
  71. ( http://www.ietf.org/ietf/1id-abstracts.txt )
  72. ( http://www.ietf.org/shadow.html )
  73.  
  74.  
  75. Martians: (updates at: www.iana.org/assignments/ipv4-address-space )
  76. no ip source-route
  77. access-list 100 deny ip host 0.0.0.0 any
  78. deny ip 0.0.0.0 0.255.255.255 any log ! antispoof
  79. deny ip 0.0.0.0 0.255.255.255 0.0.0.0 255.255.255.255 ! antispoof
  80. deny ip any 255.255.255.128 0.0.0.127 ! antispoof
  81. deny ip host 0.0.0.0 any log ! antispoof
  82. deny ip host [router intf] [router intf] ! antispoof
  83. deny ip xxx.xxx.xxx.0 0.0.0.255 any log ! lan area
  84. deny ip 0/8 0.255.255.255 any log ! IANA - Reserved
  85. deny ip 1/8 0.255.255.255 any log ! IANA - Reserved
  86. deny ip 2/8 0.255.255.255 any log ! IANA - Reserved
  87. deny ip 5/8 0.255.255.255 any log ! IANA - Reserved
  88. deny ip 7/8 0.255.255.255 any log ! IANA - Reserved
  89. deny ip 10.0.0.0 0.255.255.255 any log ! IANA - Private Use
  90. deny ip 23/8 0.255.255.255 any log ! IANA - Reserved
  91. deny ip 27/8 0.255.255.255 any log ! IANA - Reserved
  92. deny ip 31/8 0.255.255.255 any log ! IANA - Reserved
  93. deny ip 36-37/8 0.255.255.255 any log ! IANA - Reserved
  94. deny ip 39/8 0.255.255.255 any log ! IANA - Reserved
  95. deny ip 41-42/8 0.255.255.255 any log ! IANA - Reserved
  96. deny ip 50/8 0.255.255.255 any log ! IANA - Reserved
  97. deny ip 58-60/8 0.255.255.255 any log ! IANA - Reserved
  98. deny ip 69-79/8 0.255.255.255 any log ! IANA - Reserved
  99. deny ip 82-95/8 0.255.255.255 any log ! IANA - Reserved
  100. deny ip 96-126/8 0.255.255.255 any log ! IANA - Reserved
  101. deny ip 127/8 0.255.255.255 any log ! IANA - Reserved
  102. deny ip 169.254.0.0 0.0.255.255 any log ! link-local network
  103. deny ip 172.16.0.0 0.15.255.255 any log ! reserved
  104. deny ip 192.168.0.0 0.0.255.255 any log ! reserved
  105. deny ip 192.0.2.0 0.0.0.255 any log ! test network
  106. deny ip 197/8 0.255.255.255 any log ! IANA - Reserved
  107. deny ip 220/8 0.255.255.255 any log ! IANA - Reserved
  108. deny ip 222-223/8 0.255.255.255 any log ! IANA - Reserved
  109. deny ip 224.0.0.0 31.255.255.255 any log ! multicast
  110. deny ip 224.0.0.0 15.255.255.255 any log ! unless MBGP-learned routes
  111. deny ip 224-239/8 0.255.255.255 any log ! IANA - Multicast
  112. deny ip 240-255/8 0.255.255.255 any log ! IANA - Reserved
  113.  
  114. filtered source addresses
  115. 0/8 ! broadcast
  116. 10/8 ! RFC 1918 private
  117. 127/8 ! loopback
  118. 169.254.0/16 ! link local
  119. 172.16.0.0/12 ! RFC 1918 private
  120. 192.0.2.0/24 ! TEST-NET
  121. 192.168.0/16 ! RFC 1918 private
  122. 224.0.0.0/4 ! class D multicast
  123. 240.0.0.0/5 ! class E reserved
  124. 248.0.0.0/5 ! reserved
  125. 255.255.255.255/32 ! broadcast
  126.  
  127. ARIN administrated blocks: (http://www.arin.net/regserv/IPStats.html)
  128. 24.0.0.0/8 (portions of)
  129. 63.0.0.0/8
  130. 64.0.0.0/8
  131. 65.0.0.0/8
  132. 66.0.0.0/8
  133. 196.0.0.0/8
  134. 198.0.0.0/8
  135. 199.0.0.0/8
  136. 200.0.0.0/8
  137. 204.0.0.0/8
  138. 205.0.0.0/8
  139. 206.0.0.0/8
  140. 207.0.0.0/8
  141. 208.0.0.0/8
  142. 209.0.0.0/8
  143. 216.0.0.0/8
  144. ----------------------------------------------------------
  145.  
  146. well known ports: (rfc1700.txt)
  147. www.iana.org/assignments/port-numbers
  148.  
  149. protocol numbers:
  150. www.iana.org/assignments/protocol-numbers
  151. www.iana.org/numbers.htm
  152.  
  153. ICMP(Types/Codes)
  154. Testing Destination Reachability & Status
  155. (0/0) Echo-Reply
  156. (8/0) Echo
  157. Unreachable Destinations
  158. (3/0) Network Unreachable
  159. (3/1) Host Unreachable
  160. (3/2) Protocol Unreachable
  161. (3/3) Port Unreachable
  162. (3/4) Fragmentaion Needed and DF set (Pkt too big)
  163. (3/5) Source Route Failed
  164. (3/6) Network Unknown
  165. (3/7) Host Unknown
  166. (3/9) DOD Net Prohibited
  167. (3/10) DOD Host Prohibited
  168. (3/11) Net TOS Unreachable
  169. (3/12) Host TOS Unreachable
  170. (3/13) Administratively Prohibited
  171. (3/14) Host Precedence Unreachable
  172. (3/15) Precedence Unreachable
  173. Flow Control
  174. (4/0) Source-Quench [RFC 1016]
  175. Route Change Requests from Gateways
  176. (5/0) Redirect Datagrams for the Net
  177. (5/1) Redirect Datagrams for the Host
  178. (5/2) Redirect Datagrams for the TOS and Net
  179. (5/3) Redirect Datagrams for the TOS and Host
  180. Router
  181. (6/-) Alternate-Address
  182. (9/0) Router-Advertisement
  183. (10/0) Router-Solicitation
  184. Detecting Circular or Excessively Long Routes
  185. (11/0) Time to Live Count Exceeded
  186. (11/1) Fragment Reassembly Time Exceeded
  187. Reporting Incorrect Datagram Headers
  188. (12/0) Parameter-Problem
  189. (12/1) Option Missing
  190. (12/2) No Room for Option
  191. Clock Synchronization and Transit Time Estimation
  192. (13/0) Timestamp-Request
  193. (14/0) Timestamp-Reply
  194. Obtaining a Network Address (RARP Alternative)
  195. (15/0) Information-Request
  196. (16/0) Information-Reply
  197. Obtaining a Subnet Mask [RFC 950]
  198. (17/0) Address Mask-Request
  199. (18/0) Address Mask-Reply
  200. Other
  201. (30/0) Traceroute
  202. (31/0) Conversion-Error
  203. (32/0) Mobile-Redirect
  204.  
  205. Ref: [RFC 792] [RFC 896] [RFC 950] [RFC 1016]
  206. www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_5_3/cofigide/qos.htm#19774
  207.  
  208.  
  209.  
  210. Decimal system Prefix's
  211. Factor Exponent Prefix
  212. ---------------------------------------------------
  213. 1 000 000 000 000 000 000 000 000...10^24....yotta
  214. 1 000 000 000 000 000 000 000...10^21....zetta
  215. 1 000 000 000 000 000 000...10^18....exa
  216. 1 000 000 000 000 000...10^15....peta
  217. 1 000 000 000 000...10^12....tera
  218. 1 000 000 000...10^9.....giga
  219. 1 000 000...10^6.....mega
  220. 1 000...10^3.....kilo
  221. 100...10^2.....hecto
  222. 10...10^1.....deka
  223. 0.1...10^-1....deci
  224. 0.01...10^-2....centi
  225. 0.001...10^-3....milli
  226. 0.000 001...10^-6....micro
  227. 0.000 000 001...10^-9....nano
  228. 0.000 000 000 001...10^-12...pico
  229. 0.000 000 000 000 001...10^-15...femto
  230. 0.000 000 000 000 000 001...10^-18...atto
  231. 0.000 000 000 000 000 000 001...10^-21...zepto
  232. 0.000 000 000 000 000 000 000 001...10^-24...yocto
  233. ---------------------------------------------------
  234.  
  235. Convert Fahrenheit <> Celsius:
  236. Celsius = (Fahrenheit - 32) / 1.8
  237. Fahrenheit = (Celsius * 1.8) + 32
  238.  
  239.  
  240. Source: http://www.oav.net/mirrors/cidr.html
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement
Public Pastes
Advertisement
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!