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1 perry 1 MTR
2 !!!MTR
3 NAME
4 SYNOPSIS
5 DESCRIPTION
6 OPTIONS
7 BUGS
8 CONTACT INFORMATION
9 SEE ALSO
10 ----
11 !!NAME
12
13
14 mtr - a network diagnostic tool
15 !!SYNOPSIS
16
17
18 __mtr__ [[__-hvrctglsni__] [[__--help__]
19 [[__--version__] [[__--report__] [[__--report-cycles
20 COUNT__] [[__--curses__] [[__--split__] [[__--raw__]
21 [[__--no-dns__] [[__--gtk__] [[__--address
22 IP.ADD.RE.SS__] [[__--interval SECONDS__] [[__--psize
23 BYTES | -p BYTES__] __HOSTNAME
24 [[PACKETSIZE]__
25 !!DESCRIPTION
26
27
28 __mtr__ combines the functionality of the
29 __traceroute__ and __ping__ programs in a single
30 network diagnostic tool.
31
32
33 As __mtr__ starts, it investigates the network connection
34 between the host __mtr__ runs on and __HOSTNAME__.
35 After it determines the address of each network hop between
36 the machines, it sends a sequence ICMP ECHO requests to each
37 one to determine the quality of the link to each machine. As
38 it does this, it prints running statistics about each
39 machine.
40 !!OPTIONS
41
42
43 __-h__
44
45
46 __--help__
47
48
49 Print the summary of command line argument
50 options.
51
52
53 __-v__
54
55
56 __--version__
57
58
59 Print the installed version of mtr.
60
61
62 __-r__
63
64
65 __--report__
66
67
68 This option puts __mtr__ into __report__ mode. When in
69 this mode, __mtr__ will run for the number of cycles
70 specified by the __-c__ option, and then print statistics
71 and exit.
72
73
74 This mode is useful for generating statistics about network
75 quality. Note that each running instance of __mtr__
76 generates a significant amount of network traffic. Using
77 __mtr__ to measure the quality of your network may result
78 in decreased network performance.
79
80
81 __-c COUNT__
82
83
84 __--report-cycles COUNT__
85
86
87 Use this option to set the number of pings sent to determine
88 both the machines on the network and the reliability of
89 those machines. Each cycle lasts one second. This option is
90 only useful with the __-r__ option.
91
92
93 __-p BYTES__
94
95
96 __--psize BYTES__
97
98
99 __PACKETSIZE__
100
101
102 These options or a trailing PACKETSIZE on the commandline
103 sets the packet size used for probing. It is in bytes
104 inclusive IP and ICMP headers
105
106
107 __-t__
108
109
110 __--curses__
111
112
113 Use this option to force __mtr__ to use the curses based
114 terminal interface (if available).
115
116
117 __-n__
118
119
120 __--no-dns__
121
122
123 Use this option to force __mtr__ to display numeric IP
124 numbers and not try to resolve the host names.
125
126
127 __-g__
128
129
130 __--gtk__
131
132
133 Use this option to force __mtr__ to use the GTK+ based
134 X11 window interface (if available). GTK+ must have been
135 available on the system when __mtr__ was built for this
136 to work. See the GTK+ web page at
137 __http://www.gimp.org/gtk/__ for more information about
138 GTK+.
139
140
141 __-s__
142
143
144 __--split__
145
146
147 Use this option to set __mtr__ to spit out a format that
148 is suitable for a split-user interface.
149
150
151 __-l__
152
153
154 __--raw__
155
156
157 Use this option to tell __mtr__ to use the raw output
158 format. This format is better suited for archival of the
159 measurement results. It could be parsed to be presented into
160 any of the other display methods.
161
162
163 __-a IP.ADD.RE.SS__
164
165
166 __--address IP.ADD.RE.SS__
167
168
169 Use this option to bind outgoing packets' socket to specific
170 interface, so that any packet will be sent through this
171 interface. NOTE that this option doesn't apply to DNS
172 requests (which could be and could not be what you
173 want).
174
175
176 __-i SECONDS__
177
178
179 __--interval SECONDS__
180
181
182 Use this option to specify the positive number of seconds
183 between ICMP ECHO requests. The default value for this
184 parameter is one second.
185 !!BUGS
186
187
188 Some modern routers give a lower priority to ICMP ECHO
189 packets than to other network traffic. Consequently, the
190 reliability of these routers reported by __mtr__ will be
191 significantly lower than the actual reliability of these
192 routers.
193 !!CONTACT INFORMATION
194
195
196 For the latest version, see the mtr web page at
197 __http://www.bitwizard.nl/mtr/__.
198
199
200 Subscribe to the mtr mailing list. All mtr related
201 announcements are posted to the mtr mailing list. To
202 subscribe, send email to __majordomo@lists.xmission.com__
203 with __subscribe mtr__ in the body of the message. To
204 send a message to the mailing list, mail to
205 __mtr@lists.xmission.com__.
206
207
208 Bug reports and feature requests should be sent to the mtr
209 mailing list.
210 !!SEE ALSO
211
212
213 traceroute(8), ping(8).
214 ----
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