bookmark_borderFiber Color Codes

Fiber Color Codes
Inside the cable or inside each tube in a loose tube cable, individual fibers will be color coded for identification. Fibers follow the convention created for telephone wires except fibers are identified individually, not in pairs. For splicing, like color fibers are spliced to ensure continuity of color codes throughout a cable run.

Fiber Number Color
1 Blue
2 Orange
3 Green
4 Brown
5 Slate
6 White
7 Red
8 Black
9 Yellow
10 Violet
11 Rose
12 Aqua

 

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bookmark_borderPostfix TLS Setup

Configure Postfix to allow secure connections (Short Version)

openssl genrsa -des3 -out mail.domain.tld.key 2048
chmod 600 mail.domain.tld.key
openssl req -new -key mail.domain.tld.key -out mail.domain.tld.csr
openssl x509 -req -days 365 -in mail.domain.tld.csr -signkey mail.domain.tld.key -out mail.domain.tld.crt
openssl rsa -in mail.domain.tld.key -out mail.domain.tld.key.nopass
mv mail.domain.tld.key.nopass mail.domain.tld.key
openssl req -new -x509 -extensions v3_ca -keyout cakey.pem -out cacert.pem -days 3650
chmod 600 mail.domain.tld.key
chmod 600 cakey.pem
mv mail.domain.tld.key /etc/ssl/private/
mv mail.domain.tld.crt /etc/ssl/certs/
mv cakey.pem /etc/ssl/private/
mv cacert.pem /etc/ssl/certs/
postconf -e ‘smtpd_tls_auth_only = no’
postconf -e ‘smtp_use_tls = yes’
postconf -e ‘smtpd_use_tls = yes’
postconf -e ‘smtp_tls_note_starttls_offer = yes’
postconf -e ‘smtpd_tls_key_file = /etc/ssl/private/mail.domain.tld.key’
postconf -e ‘smtpd_tls_cert_file = /etc/ssl/certs/mail.domain.tld.crt’
postconf -e ‘smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem’
postconf -e ‘smtpd_tls_loglevel = 1’
postconf -e ‘smtpd_tls_received_header = yes’
postconf -e ‘smtpd_tls_session_cache_timeout = 3600s’
postconf -e ‘tls_random_source = dev:/dev/urandom’
postconf -e ‘myhostname = mail.example.com’

 

bookmark_borderASCII Control Characters

ASCII Control Characters 0-255

DEC OCT HEX BIN Symbol HTML Number HTML Name Description
0 0 0 0 NUL � Null char
1 1 1 1 SOH  Start of Heading
2 2 2 10 STX  Start of Text
3 3 3 11 ETX  End of Text
4 4 4 100 EOT  End of Transmission
5 5 5 101 ENQ  Enquiry
6 6 6 110 ACK  Acknowledgment
7 7 7 111 BEL  Bell
8 10 8 1000 BS  Back Space
9 11 9 1001 HT 	 Horizontal Tab
10 12 0A 1010 LF 
 Line Feed
11 13 0B 1011 VT  Vertical Tab
12 14 0C 1100 FF  Form Feed
13 15 0D 1101 CR 
 Carriage Return
14 16 0E 1110 SO  Shift Out / X-On
15 17 0F 1111 SI  Shift In / X-Off
16 20 10 10000 DLE  Data Line Escape
17 21 11 10001 DC1  Device Control 1 (oft. XON)
18 22 12 10010 DC2  Device Control 2
19 23 13 10011 DC3  Device Control 3 (oft. XOFF)
20 24 14 10100 DC4  Device Control 4
21 25 15 10101 NAK  Negative Acknowledgement
22 26 16 10110 SYN  Synchronous Idle
23 27 17 10111 ETB  End of Transmit Block
24 30 18 11000 CAN  Cancel
25 31 19 11001 EM  End of Medium
26 32 1A 11010 SUB  Substitute
27 33 1B 11011 ESC  Escape
28 34 1C 11100 FS  File Separator
29 35 1D 11101 GS  Group Separator
30 36 1E 11110 RS  Record Separator
31 37 1F 11111 US  Unit Separator
32 40 20 100000   Space
33 41 21 100001 ! ! Exclamation mark
34 42 22 100010 " " Double quotes (or speech marks)
35 43 23 100011 # # Number
36 44 24 100100 $ $ Dollar
37 45 25 100101 % % Procenttecken
38 46 26 100110 & & & Ampersand
39 47 27 100111 ' Single quote
40 50 28 101000 ( ( Open parenthesis (or open bracket)
41 51 29 101001 ) ) Close parenthesis (or close bracket)
42 52 2A 101010 * * Asterisk
43 53 2B 101011 + + Plus
44 54 2C 101100 , , Comma
45 55 2D 101101 - Hyphen
46 56 2E 101110 . . Period, dot or full stop
47 57 2F 101111 / / Slash or divide
48 60 30 110000 0 0 Zero
49 61 31 110001 1 1 One
50 62 32 110010 2 2 Two
51 63 33 110011 3 3 Three
52 64 34 110100 4 4 Four
53 65 35 110101 5 5 Five
54 66 36 110110 6 6 Six
55 67 37 110111 7 7 Seven
56 70 38 111000 8 8 Eight
57 71 39 111001 9 9 Nine
58 72 3A 111010 : : Colon
59 73 3B 111011 ; &#59; Semicolon
60 74 3C 111100 < &#60; &lt; Less than (or open angled bracket)
61 75 3D 111101 = &#61; Equals
62 76 3E 111110 > &#62; &gt; Greater than (or close angled bracket)
63 77 3F 111111 ? &#63; Question mark
64 100 40 1000000 @ &#64; At symbol
65 101 41 1000001 A &#65; Uppercase A
66 102 42 1000010 B &#66; Uppercase B
67 103 43 1000011 C &#67; Uppercase C
68 104 44 1000100 D &#68; Uppercase D
69 105 45 1000101 E &#69; Uppercase E
70 106 46 1000110 F &#70; Uppercase F
71 107 47 1000111 G &#71; Uppercase G
72 110 48 1001000 H &#72; Uppercase H
73 111 49 1001001 I &#73; Uppercase I
74 112 4A 1001010 J &#74; Uppercase J
75 113 4B 1001011 K &#75; Uppercase K
76 114 4C 1001100 L &#76; Uppercase L
77 115 4D 1001101 M &#77; Uppercase M
78 116 4E 1001110 N &#78; Uppercase N
79 117 4F 1001111 O &#79; Uppercase O
80 120 50 1010000 P &#80; Uppercase P
81 121 51 1010001 Q &#81; Uppercase Q
82 122 52 1010010 R &#82; Uppercase R
83 123 53 1010011 S &#83; Uppercase S
84 124 54 1010100 T &#84; Uppercase T
85 125 55 1010101 U &#85; Uppercase U
86 126 56 1010110 V &#86; Uppercase V
87 127 57 1010111 W &#87; Uppercase W
88 130 58 1011000 X &#88; Uppercase X
89 131 59 1011001 Y &#89; Uppercase Y
90 132 5A 1011010 Z &#90; Uppercase Z
91 133 5B 1011011 [ &#91; Opening bracket
92 134 5C 1011100 \ &#92; Backslash
93 135 5D 1011101 ] &#93; Closing bracket
94 136 5E 1011110 ^ &#94; Caret – circumflex
95 137 5F 1011111 _ &#95; Underscore
96 140 60 1100000 ` &#96; Grave accent
97 141 61 1100001 a &#97; Lowercase a
98 142 62 1100010 b &#98; Lowercase b
99 143 63 1100011 c &#99; Lowercase c
100 144 64 1100100 d &#100; Lowercase d
101 145 65 1100101 e &#101; Lowercase e
102 146 66 1100110 f &#102; Lowercase f
103 147 67 1100111 g &#103; Lowercase g
104 150 68 1101000 h &#104; Lowercase h
105 151 69 1101001 i &#105; Lowercase i
106 152 6A 1101010 j &#106; Lowercase j
107 153 6B 1101011 k &#107; Lowercase k
108 154 6C 1101100 l &#108; Lowercase l
109 155 6D 1101101 m &#109; Lowercase m
110 156 6E 1101110 n &#110; Lowercase n
111 157 6F 1101111 o &#111; Lowercase o
112 160 70 1110000 p &#112; Lowercase p
113 161 71 1110001 q &#113; Lowercase q
114 162 72 1110010 r &#114; Lowercase r
115 163 73 1110011 s &#115; Lowercase s
116 164 74 1110100 t &#116; Lowercase t
117 165 75 1110101 u &#117; Lowercase u
118 166 76 1110110 v &#118; Lowercase v
119 167 77 1110111 w &#119; Lowercase w
120 170 78 1111000 x &#120; Lowercase x
121 171 79 1111001 y &#121; Lowercase y
122 172 7A 1111010 z &#122; Lowercase z
123 173 7B 1111011 { &#123; Opening brace
124 174 7C 1111100 | &#124; Vertical bar
125 175 7D 1111101 } &#125; Closing brace
126 176 7E 1111110 ~ &#126; Equivalency sign – tilde
127 177 7F 1111111 &#127; Delete
128 200 80 10000000 &#128; &euro; Euro sign
129 201 81 10000001
130 202 82 10000010 &#130; &sbquo; Single low-9 quotation mark
131 203 83 10000011 ƒ &#131; &fnof; Latin small letter f with hook
132 204 84 10000100 &#132; &bdquo; Double low-9 quotation mark
133 205 85 10000101 &#133; &hellip; Horizontal ellipsis
134 206 86 10000110 &#134; &dagger; Dagger
135 207 87 10000111 &#135; &Dagger; Double dagger
136 210 88 10001000 ˆ &#136; &circ; Modifier letter circumflex accent
137 211 89 10001001 &#137; &permil; Per mille sign
138 212 8A 10001010 Š &#138; &Scaron; Latin capital letter S with caron
139 213 8B 10001011 &#139; &lsaquo; Single left-pointing angle quotation
140 214 8C 10001100 Œ &#140; &OElig; Latin capital ligature OE
141 215 8D 10001101
142 216 8E 10001110 Ž &#142; Latin captial letter Z with caron
143 217 8F 10001111
144 220 90 10010000
145 221 91 10010001 &#145; &lsquo; Left single quotation mark
146 222 92 10010010 &#146; &rsquo; Right single quotation mark
147 223 93 10010011 &#147; &ldquo; Left double quotation mark
148 224 94 10010100 &#148; &rdquo; Right double quotation mark
149 225 95 10010101 &#149; &bull; Bullet
150 226 96 10010110 &#150; &ndash; En dash
151 227 97 10010111 &#151; &mdash; Em dash
152 230 98 10011000 ˜ &#152; &tilde; Small tilde
153 231 99 10011001 &#153; &trade; Trade mark sign
154 232 9A 10011010 š &#154; &scaron; Latin small letter S with caron
155 233 9B 10011011 &#155; &rsaquo; Single right-pointing angle quotation mark
156 234 9C 10011100 œ &#156; &oelig; Latin small ligature oe
157 235 9D 10011101
158 236 9E 10011110 ž &#158; Latin small letter z with caron
159 237 9F 10011111 Ÿ &#159; &Yuml; Latin capital letter Y with diaeresis
160 240 A0 10100000 &#160; &nbsp; Non-breaking space
161 241 A1 10100001 ¡ &#161; &iexcl; Inverted exclamation mark
162 242 A2 10100010 ¢ &#162; &cent; Cent sign
163 243 A3 10100011 £ &#163; &pound; Pound sign
164 244 A4 10100100 ¤ &#164; &curren; Currency sign
165 245 A5 10100101 ¥ &#165; &yen; Yen sign
166 246 A6 10100110 ¦ &#166; &brvbar; Pipe, Broken vertical bar
167 247 A7 10100111 § &#167; &sect; Section sign
168 250 A8 10101000 ¨ &#168; &uml; Spacing diaeresis – umlaut
169 251 A9 10101001 © &#169; &copy; Copyright sign
170 252 AA 10101010 ª &#170; &ordf; Feminine ordinal indicator
171 253 AB 10101011 « &#171; &laquo; Left double angle quotes
172 254 AC 10101100 ¬ &#172; &not; Not sign
173 255 AD 10101101 &#173; &shy; Soft hyphen
174 256 AE 10101110 ® &#174; &reg; Registered trade mark sign
175 257 AF 10101111 ¯ &#175; &macr; Spacing macron – overline
176 260 B0 10110000 ° &#176; &deg; Degree sign
177 261 B1 10110001 ± &#177; &plusmn; Plus-or-minus sign
178 262 B2 10110010 ² &#178; &sup2; Superscript two – squared
179 263 B3 10110011 ³ &#179; &sup3; Superscript three – cubed
180 264 B4 10110100 ´ &#180; &acute; Acute accent – spacing acute
181 265 B5 10110101 µ &#181; &micro; Micro sign
182 266 B6 10110110 &#182; &para; Pilcrow sign – paragraph sign
183 267 B7 10110111 · &#183; &middot; Middle dot – Georgian comma
184 270 B8 10111000 ¸ &#184; &cedil; Spacing cedilla
185 271 B9 10111001 ¹ &#185; &sup1; Superscript one
186 272 BA 10111010 º &#186; &ordm; Masculine ordinal indicator
187 273 BB 10111011 » &#187; &raquo; Right double angle quotes
188 274 BC 10111100 ¼ &#188; &frac14; Fraction one quarter
189 275 BD 10111101 ½ &#189; &frac12; Fraction one half
190 276 BE 10111110 ¾ &#190; &frac34; Fraction three quarters
191 277 BF 10111111 ¿ &#191; &iquest; Inverted question mark
192 300 C0 11000000 À &#192; &Agrave; Latin capital letter A with grave
193 301 C1 11000001 Á &#193; &Aacute; Latin capital letter A with acute
194 302 C2 11000010 Â &#194; &Acirc; Latin capital letter A with circumflex
195 303 C3 11000011 Ã &#195; &Atilde; Latin capital letter A with tilde
196 304 C4 11000100 Ä &#196; &Auml; Latin capital letter A with diaeresis
197 305 C5 11000101 Å &#197; &Aring; Latin capital letter A with ring above
198 306 C6 11000110 Æ &#198; &AElig; Latin capital letter AE
199 307 C7 11000111 Ç &#199; &Ccedil; Latin capital letter C with cedilla
200 310 C8 11001000 È &#200; &Egrave; Latin capital letter E with grave
201 311 C9 11001001 É &#201; &Eacute; Latin capital letter E with acute
202 312 CA 11001010 &#202; &Ecirc; Latin capital letter E with circumflex
203 313 CB 11001011 Ë &#203; &Euml; Latin capital letter E with diaeresis
204 314 CC 11001100 Ì &#204; &Igrave; Latin capital letter I with grave
205 315 CD 11001101 Í &#205; &Iacute; Latin capital letter I with acute
206 316 CE 11001110 Î &#206; &Icirc; Latin capital letter I with circumflex
207 317 CF 11001111 Ï &#207; &Iuml; Latin capital letter I with diaeresis
208 320 D0 11010000 Ð &#208; &ETH; Latin capital letter ETH
209 321 D1 11010001 Ñ &#209; &Ntilde; Latin capital letter N with tilde
210 322 D2 11010010 Ò &#210; &Ograve; Latin capital letter O with grave
211 323 D3 11010011 Ó &#211; &Oacute; Latin capital letter O with acute
212 324 D4 11010100 Ô &#212; &Ocirc; Latin capital letter O with circumflex
213 325 D5 11010101 Õ &#213; &Otilde; Latin capital letter O with tilde
214 326 D6 11010110 Ö &#214; &Ouml; Latin capital letter O with diaeresis
215 327 D7 11010111 × &#215; &times; Multiplication sign
216 330 D8 11011000 Ø &#216; &Oslash; Latin capital letter O with slash
217 331 D9 11011001 Ù &#217; &Ugrave; Latin capital letter U with grave
218 332 DA 11011010 Ú &#218; &Uacute; Latin capital letter U with acute
219 333 DB 11011011 Û &#219; &Ucirc; Latin capital letter U with circumflex
220 334 DC 11011100 Ü &#220; &Uuml; Latin capital letter U with diaeresis
221 335 DD 11011101 Ý &#221; &Yacute; Latin capital letter Y with acute
222 336 DE 11011110 Þ &#222; &THORN; Latin capital letter THORN
223 337 DF 11011111 ß &#223; &szlig; Latin small letter sharp s – ess-zed
224 340 E0 11100000 à &#224; &agrave; Latin small letter a with grave
225 341 E1 11100001 á &#225; &aacute; Latin small letter a with acute
226 342 E2 11100010 â &#226; &acirc; Latin small letter a with circumflex
227 343 E3 11100011 ã &#227; &atilde; Latin small letter a with tilde
228 344 E4 11100100 ä &#228; &auml; Latin small letter a with diaeresis
229 345 E5 11100101 å &#229; &aring; Latin small letter a with ring above
230 346 E6 11100110 æ &#230; &aelig; Latin small letter ae
231 347 E7 11100111 ç &#231; &ccedil; Latin small letter c with cedilla
232 350 E8 11101000 è &#232; &egrave; Latin small letter e with grave
233 351 E9 11101001 é &#233; &eacute; Latin small letter e with acute
234 352 EA 11101010 ê &#234; &ecirc; Latin small letter e with circumflex
235 353 EB 11101011 ë &#235; &euml; Latin small letter e with diaeresis
236 354 EC 11101100 ì &#236; &igrave; Latin small letter i with grave
237 355 ED 11101101 í &#237; &iacute; Latin small letter i with acute
238 356 EE 11101110 î &#238; &icirc; Latin small letter i with circumflex
239 357 EF 11101111 ï &#239; &iuml; Latin small letter i with diaeresis
240 360 F0 11110000 ð &#240; &eth; Latin small letter eth
241 361 F1 11110001 ñ &#241; &ntilde; Latin small letter n with tilde
242 362 F2 11110010 ò &#242; &ograve; Latin small letter o with grave
243 363 F3 11110011 ó &#243; &oacute; Latin small letter o with acute
244 364 F4 11110100 ô &#244; &ocirc; Latin small letter o with circumflex
245 365 F5 11110101 õ &#245; &otilde; Latin small letter o with tilde
246 366 F6 11110110 ö &#246; &ouml; Latin small letter o with diaeresis
247 367 F7 11110111 ÷ &#247; &divide; Division sign
248 370 F8 11111000 ø &#248; &oslash; Latin small letter o with slash
249 371 F9 11111001 ù &#249; &ugrave; Latin small letter u with grave
250 372 FA 11111010 ú &#250; &uacute; Latin small letter u with acute
251 373 FB 11111011 û &#251; &ucirc; Latin small letter u with circumflex
252 374 FC 11111100 ü &#252; &uuml; Latin small letter u with diaeresis
253 375 FD 11111101 ý &#253; &yacute; Latin small letter y with acute
254 376 FE 11111110 þ &#254; &thorn; Latin small letter thorn
255 377 FF 11111111 ÿ &#255; &yuml; Latin small letter y with diaeresis

 

bookmark_borderFiber Optics Acronyms

Acronyms:


SFP: Small Form Factor Pluggable
sfp

XFP: 10 Gigabit Small Form Factor Pluggable
xfp

MU: Miniature Unit
mu
The MU connector, developed by NTT in Japan, is a Small Form Factor (SFF) connector, and can be considered a smaller SC style connector. It is based on a 1.25mm ceramic ferrule and is available in simplex, duplex and higher gangable styles.

LC: Lucent Connector
lc
A small form factor ceramic based connector developed by Lucent.

SC: Subscriber Connector
sc
Originally developed by NTT, the SC connector has a push/pull snap fit. The duplex SC connector uses the same mating profile as the simplex design. A number of SC suppliers actually clip simplex SC connectors together to form the duplex version..

FC: Fiber Connector
fc
The FC connector has a screw-on mating style. Primarily used in the telecom industry, the FC is a robust, highly reliable design.

MTRJ: ‘MT’ ferrule, Register Jack latch
mtrj
This connector is radically different than the other connectors shown, in large part, due to the single ferrule that handles two fibers. This is the first of the Small Form Factor (SFF) connector designs to reach a measure of market acceptance. The MT-RJ is a variation of the reliable MT-ferrule connector series, the first major multi-fiber ferrule design.

ST: Straight Tip
st
Developed by AT&T, the ST connector (for Straight Tip) has been a perennial favorite for its termination simplicity and low cost.

bookmark_borderHow To Factory Default Cisco Routers

To factory default a Cisco router, you will need to run a couple commands in “rommon”. Send a break a few times to force the router in to rommon. Do this immediately after powering on the router.

rommon>confreg 0x2142
rommon>reset

The router will reload and the config should be wiped. Once you are back in “enable”  mode again, you will need to change the config register back to 0x2102. If you fail to do this, your config changes will not save after a reload or power cycle.

Router(config)#config-register 0x2102
Router(config)#end
Router#write memory


Listed below are other configuration register settings:

0x102
Ignores break
9600 console baud

0x1202
1200 baud rate

0x2101
Boots into bootstrap
Ignores break
Boots into ROM if initial boot fails
9600 console baud rate

0x2102
Ignores break
Boots into ROM if initial boot fails
9600 console baud rate default value for most platforms

0x2120
Boots into ROMmon
19200 console speed

0x2122
Ignores break
Boots into ROM if initial boot fails
19200 console baud rate

0x2124
NetBoot
Ignores break
Boots into ROM if initial boot fails
19200 console speed

0x2142
Ignores break
Boots into ROM if initial boot fails
9600 console baud rate
Ignores the contents of Non-Volatile RAM (NVRAM) (ignores configuration)

0x2902
Ignores break
Boots into ROM if initial boot fails
4800 console baud rate

0x2922
Ignores break
Boots into ROM if initial boot fails
38400 console baud rate

0x3122
Ignores break
Boots into ROM if initial boot fails
57600 console baud rate

0x3902
Ignores break
Boots into ROM if initial boot fails
2400 console baud rate

0x3922
Ignores break
Boots into ROM if initial boot fails
115200 console baud rate

bookmark_borderDWDM Channels

Dense Wavelength Division Multiplexing

Channel Wavelength(nm) Frequency(GHz) Frequency(THz)
1 1,577.03 190,100 190.1
2 1,576.20 190,200 190.2
3 1,575.37 190,300 190.3
4 1,574.54 190,400 190.4
5 1,573.71 190,500 190.5
6 1,572.89 190,600 190.6
7 1,572.06 190,700 190.7
8 1,571.24 190,800 190.8
9 1,570.42 190,900 190.9
10 1,569.59 191,000 191.0
11 1,568.77 191,100 191.1
12 1,567.95 191,200 191.2
13 1,567.13 191,300 191.3
14 1,566.31 191,400 191.4
15 1,565.50 191,500 191.5
16 1,564.68 191,600 191.6
17 1,563.86 191,700 191.7
18 1,563.05 191,800 191.8
19 1,562.23 191,900 191.9
20 1,561.42 192,000 192.0
21 1,560.61 192,100 192.1
22 1,559.79 192,200 192.2
23 1,558.98 192,300 192.3
24 1,558.17 192,400 192.4
25 1,557.36 192,500 192.5
26 1,556.55 192,600 192.6
27 1,555.75 192,700 192.7
28 1,554.94 192,800 192.8
29 1,554.13 192,900 192.9
30 1,553.33 193,000 193.0
31 1,552.52 193,100 193.1
32 1,551.72 193,200 193.2
33 1,550.92 193,300 193.3
34 1,550.12 193,400 193.4
35 1,549.32 193,500 193.5
36 1,548.51 193,600 193.6
37 1,547.72 193,700 193.7
38 1,546.92 193,800 193.8
39 1,546.12 193,900 193.9
40 1,545.32 194,000 194.0
41 1,544.53 194,100 194.1
42 1,543.73 194,200 194.2
43 1,542.94 194,300 194.3
44 1,542.14 194,400 194.4
45 1,541.35 194,500 194.5
46 1,540.56 194,600 194.6
47 1,539.77 194,700 194.7
48 1,538.98 194,800 194.8
49 1,538.19 194,900 194.9
50 1,537.40 195,000 195.0
51 1,536.61 195,100 195.1
52 1,535.82 195,200 195.2
53 1,535.04 195,300 195.3
54 1,534.25 195,400 195.4
55 1,533.47 195,500 195.5
56 1,532.68 195,600 195.6
57 1,531.90 195,700 195.7
58 1,531.12 195,800 195.8
59 1,530.33 195,900 195.9
60 1,529.55 196,000 196.0
61 1,528.77 196,100 196.1
62 1,527.99 196,200 196.2
63 1,527.22 196,300 196.3
64 1,526.44 196,400 196.4
65 1,525.66 196,500 196.5
66 1,524.89 196,600 196.6
67 1,524.11 196,700 196.7
68 1,523.34 196,800 196.8
69 1,522.56 196,900 196.9
70 1,521.79 197,000 197.0
71 1,521.02 197,100 197.1
72 1,520.25 197,200 197.2
73 1,519.48 197,300 197.3
74 1,518.71 197,400 197.4
75 1,517.94 197,500 197.5
76 1,517.17 197,600 197.6
77 1,516.40 197,700 197.7
78 1,515.63 197,800 197.8
79 1,514.87 197,900 197.9
80 1,514.10 198,000 198.0

bookmark_borderBandwidth Comparison

Technology Rate
LocalTalk 230 kbit/s 28.8 kB/s
Econet 800 kbit/s 100 kB/s
Omninet 1 Mbit/s 125 kB/s
IBM PC Network 2 Mbit/s 250 kB/s
ARCNET (Standard) 2.5 Mbit/s 312.5 kB/s
Token Ring (Original) 4 Mbit/s 500 kB/s
Ethernet (10BASE-T) 10 Mbit/s 1.25 MB/s
Token Ring (Later) 16 Mbit/s 2 MB/s
ARCnet Plus 20 Mbit/s 2.5 MB/s
TNCS 100 Mbit/s 12.5 MB/s
100VG 100 Mbit/s 12.5 MB/s
Token Ring IEEE 802.5t 100 Mbit/s 12.5 MB/s
Fast Ethernet (100BASE-TX) 100 Mbit/s 12.5 MB/s
FDDI 100 Mbit/s 12.5 MB/s
MoCA 1.0[25] 100 Mbit/s 12.5 MB/s
MoCA 1.1[25] 175 Mbit/s 21.875 MB/s
HomePlug AV 200 Mbit/s 25 MB/s
FireWire (IEEE 1394) 400 400 Mbit/s 50 MB/s
HIPPI 800 Mbit/s 100 MB/s
IEEE 1901 1000 Mbit/s 125 MB/s
Token Ring IEEE 802.5v 1 Gbit/s 125 MB/s
Gigabit Ethernet (1000BASE-T) 1 Gbit/s 125 MB/s
Reflective memory or RFM2 2 Gbit/s 235 MB/s
Myrinet 2000 2 Gbit/s 250 MB/s
Infiniband SDR 1_[28] 2 Gbit/s 250 MB/s
RapidIO Gen1 1x 2.5 Gbit/s 312.5 MB/s
Quadrics QsNetI 3.6 Gbit/s 450 MB/s
Infiniband DDR 4 Gbit/s 500 MB/s
RapidIO Gen2 1x 5 Gbit/s 625 MB/s
Infiniband QDR 1_[28] 8 Gbit/s 1 GB/s
Infiniband SDR 4_[28] 8 Gbit/s 1 GB/s
Quadrics QsNetII 8 Gbit/s 1 GB/s
RapidIO Gen1 4x 10 Gbit/s 1.25 GB/s
RapidIO Gen2 2x 10 Gbit/s 1.25 GB/s
10 Gigabit Ethernet (10GBASE-X) 10 Gbit/s 1.25 GB/s
Myri 10G 10 Gbit/s 1.25 GB/s
Infiniband FDR-10 10.31 Gbit/s 1.29 GB/s
Infiniband FDR 1 13.64 Gbit/s 1.7 GB/s
Infiniband DDR 4 16 Gbit/s 2 GB/s
RapidIO Gen2 4x 20 Gbit/s 2.5 GB/s
Scalable Coherent Interface (SCI) Dual Chann 20 Gbit/s 2.5 GB/s
Infiniband SDR 12 24 Gbit/s 3 GB/s
Infiniband EDR 1 25 Gbit/s 3.125 GB/s
Infiniband QDR 4 32 Gbit/s 4 GB/s
RapidIO Gen2 8x 40 Gbit/s 5 GB/s
40 Gigabit Ethernet (40GBASE-X) 40 Gbit/s 5 GB/s
Infiniband FDR-10 41.25 Gbit/s 5.16 GB/s
Infiniband DDR 12 48 Gbit/s 6 GB/s
Infiniband FDR 4 54.54 Gbit/s 6.82 GB/s
RapidIO Gen2 16x 80 Gbit/s 10 GB/s
Infiniband QDR 12 96 Gbit/s 12 GB/s
Infiniband EDR 4 100 Gbit/s 12.5 GB/s
100 Gigabit Ethernet (100GBASE-X) 100 Gbit/s 12.5 GB/s
Infiniband FDR-10 12 123.75 Gbit/s 15.47 GB/s
Infiniband FDR 12 163.64 Gbit/s 20.45 GB/s
Infiniband EDR 12 300 Gbit/s 37.5 GB/s

 

Optical Carrier (SONET):
OC-1 51.48Mbps Optical Carrier SONET – All OC-n are 51.48*n Mbps
OC-3 155.52Mbps Optical Carrier SONET
OC-12 622.08Mbps Optical Carrier SONET
OC-48 2.4Gbps Optical Carrier SONET
OC-192 9.6Gbps Optical Carrier SONET
OC-256 13.1Gbps Optical Carrier SONET
OC-768 40Gbps Optical Carrier SONET
T Carrier:
T1 1.544Mbps 24 DS0 channels, equivalent to 1 DS1
T1C 3.152Mbps 48 channels
T2 6.312Mbps 96 channels
T3 44.736Mbps 672 channels
T4 274.176Mbs 4032 channels
E1 2.048Mbps 30 64Kbps channels + 2 64Kbps D, aka European T1
DS0 64Kbps 1 channel, same rate in NA, Japan, and Europe
DS1 1.544Mbps 24 channels (T1)
DS1C 3.152Mbps 48 channels (T1C)
DS2 6.312Mbps 96 channels (T2)
DS3 44.736Mbps 672 channels (T3)
DS4 274.176Mbps 4032 channels (T4)
DS1 Japan 1.544Mbps 24 channels
DS2 Japan 6.312Mbps 96 channels
DS3 Japan 32.064Mbps 480 channels
DS4 Japan 97.728Mbps 1440 channels
DS5 Japan 400.352Mbps 5760 channels
DS1 Euro 2.048Mbps 30 channels + 2 D channels (E1)
DS2 Euro 8.448Mbps 120 channels + 2 D
DS3 Euro 34.368Mbps 480 channels + 2 D
DS4 Euro 139.268Mbps 1920 channels + 2 D
DS5 Euro 565.148Mbps 7680 channels + 2 D

bookmark_borderMysql Commands

 

Create a Mysql Database
$ mysql -u adminusername -p
mysql> CREATE DATABASE db_name;
mysql> mysql> GRANT ALL PRIVILEGES ON db_name.* TO “db_user”@”localhost” IDENTIFIED BY “passsword”;
mysql> FLUSH PRIVILEGES;
mysql> EXIT

Backup a Mysql Database
mysqldump -u db_user -p db_name > dumped_db.sql

Restore a Mysql Database
mysql -p -u db_user db_name < dumped_db.sql

bookmark_borderIPV6 Reference

2001:0db8:0123:4567:89ab:cdef:1234:5678
|||| |||| |||| |||| |||| |||| |||| ||||
|||| |||| |||| |||| |||| |||| |||| |||128     Single end-points and loopback
|||| |||| |||| |||| |||| |||| |||| |||127   Point-to-point links (inter-router)
|||| |||| |||| |||| |||| |||| |||| ||124
|||| |||| |||| |||| |||| |||| |||| |120
|||| |||| |||| |||| |||| |||| |||| 116
|||| |||| |||| |||| |||| |||| |||112
|||| |||| |||| |||| |||| |||| ||108
|||| |||| |||| |||| |||| |||| |104
|||| |||| |||| |||| |||| |||| 100
|||| |||| |||| |||| |||| |||96
|||| |||| |||| |||| |||| ||92
|||| |||| |||| |||| |||| |88
|||| |||| |||| |||| |||| 84
|||| |||| |||| |||| |||80
|||| |||| |||| |||| ||76
|||| |||| |||| |||| |72
|||| |||| |||| |||| 68
|||| |||| |||| |||64   Single End-user LAN (default prefix size for SLAAC)
|||| |||| |||| ||60   Some (very limited) 6rd deployments (/60 = 16 /64)
|||| |||| |||| |56   Minimal end sites assignment[3] (e.g. Home network) (/56 = 256 /64)
|||| |||| |||| 52   (/52 = 4096 /64)
|||| |||| |||48   Typical assignment for larger sites (/48 = 65536 /64)
|||| |||| ||44
|||| |||| |40
|||| |||| 36   possible future Local Internet registry extra-small allocations
|||| |||32   Local Internet registry minimum allocations
|||| ||28   Local Internet registry medium allocations
|||| |24   Local Internet registry large allocations
|||| 20   Local Internet registry extra large allocations
|||16
||12   Regional Internet Registry allocations from IANA[4]
|8
4

IPV6 explained by Kieth Barker https://www.youtube.com/watch?v=rljkNMySmuM
Google’s IPV6 usage chart https://www.google.com/intl/en/ipv6/statistics.html

bookmark_borderIPV4 Subnet Reference

 

CIDR Length Mask # Networks       # Hosts
  /1 128.0.0.0 128 A       2,147,483,392
  /2 192.0.0.0 64 A       1,073,741,696
  /3 224.0.0.0 32 A         536,870,848
  /4 240.0.0.0 16 A   268,435,424
  /5 248.0.0.0 8 A   134,217,712
  /6 252.0.0.0 4 A 67,108,856
  /7 254.0.0.0 2 A 33,554,428
  /8 255.0.0.0 1 A   16,777,214
  /9 255.128.0.0 128 B 8,388,352
  /10 255.192.0.0 64 B 4,194,176
  /11 255.224.0.0 32 B 2,097,088
  /12 255.240.0.0 16 B 1,048,544
  /13 255.248.0.0 8 B 524,272
  /14 255.252.0.0 4 B 262,136
  /15 255.254.0.0 2 B 131,068
  /16 255.255.0.0 1 B 65,024
  /17 255.255.128.0 128 C 32,512
  /18 255.255.192.0 64 C   16,256
  /19 255.255.224.0 32 C   8,128
  /20 255.255.240.0 16 C   4,064
  /21 255.255.248.0 8 C   2,032
  /22 255.255.252.0 4 C   1,016
  /23 255.255.254.0 2 C   508
  /24 255.255.255.0 1 C   254
  /25 255.255.255.128   2 subnets 124
  /26 255.255.255.192   4 subnets 62
  /27 255.255.255.224   8 subnets 30
  /28 255.255.255.240   16 subnets 14
  /29 255.255.255.248 32 subnets 6
  /30 255.255.255.252 64 subnets 2
  /31   255.255.255.254   none                    none
 /32 255.255.255.255         1/256 C                            1