1Smokeping_probes_TelnetIOSPing(3) SmokePing Smokeping_probes_TelnetIOSPing(3)
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6 Smokeping::probes::TelnetIOSPing - Cisco IOS Probe for SmokePing
7
9 *** Probes ***
10 +TelnetIOSPing
12 forks = 5
14 offset = 50%
15 packetsize = 56
16 step = 300
17 timeout = 15
18 # The following variables can be overridden in each target section
20 iospass = password # mandatory
21 iosuser = user # mandatory
22 pings = 5
23 psource = 192.168.2.129
24 source = 192.168.2.1 # mandatory
25 vrf = VRF1
26 # [...]
28 *** Targets ***
30 probe = TelnetIOSPing # if this should be the default probe
32 # [...]
34 + mytarget
36 # probe = TelnetIOSPing # if the default probe is something else
37 host = my.host
38 iospass = password # mandatory
39 iosuser = user # mandatory
40 pings = 5
41 psource = 192.168.2.129
42 source = 192.168.2.1 # mandatory
43 vrf = VRF1
44
46 Integrates Cisco IOS as a probe into smokeping. Uses the telnet
47 protocol to run a ping from an IOS device (source) to another device
48 (host). This probe basically uses the "extended ping" of the Cisco
49 IOS. You have the option to specify which interface the ping is
50 sourced from as well.
51
53 Supported probe-specific variables:
54 forks
56 Run this many concurrent processes at maximum
57 Example value: 5
59 Default value: 5
61 offset
63 If you run many probes concurrently you may want to prevent them
64 from hitting your network all at the same time. Using the probe-
65 specific offset parameter you can change the point in time when
66 each probe will be run. Offset is specified in % of total interval,
67 or alternatively as 'random', and the offset from the 'General'
68 section is used if nothing is specified here. Note that this does
69 NOT influence the rrds itself, it is just a matter of when data
70 acqusition is initiated. (This variable is only applicable if the
71 variable 'concurrentprobes' is set in the 'General' section.)
72 Example value: 50%
74 packetsize
76 The (optional) packetsize option lets you configure the packetsize
77 for the pings sent.
78 Default value: 56
80 step
82 Duration of the base interval that this probe should use, if
83 different from the one specified in the 'Database' section. Note
84 that the step in the RRD files is fixed when they are originally
85 generated, and if you change the step parameter afterwards, you'll
86 have to delete the old RRD files or somehow convert them. (This
87 variable is only applicable if the variable 'concurrentprobes' is
88 set in the 'General' section.)
89 Example value: 300
91 timeout
93 How long a single 'ping' takes at maximum
94 Example value: 15
96 Default value: 5
98 Supported target-specific variables:
100 iospass
102 The iospass option allows you to specify the password for the
103 username specified with the option iosuser.
104 Example value: password
106 This setting is mandatory.
108 iosuser
110 The iosuser option allows you to specify a username that has ping
111 capability on the IOS Device.
112 Example value: user
114 This setting is mandatory.
116 pings
118 How many pings should be sent to each target, if different from the
119 global value specified in the Database section. Note that the
120 number of pings in the RRD files is fixed when they are originally
121 generated, and if you change this parameter afterwards, you'll have
122 to delete the old RRD files or somehow convert them.
123 Example value: 5
125 psource
127 The (optional) psource option specifies an alternate IP address or
128 Interface from which you wish to source your pings from. Routers
129 can have many many IP addresses, and interfaces. When you ping
130 from a router you have the ability to choose which interface and/or
131 which IP address the ping is sourced from. Specifying an
132 IP/interface does not necessarily specify the interface from which
133 the ping will leave, but will specify which address the packet(s)
134 appear to come from. If this option is left out the IOS Device
135 will source the packet automatically based on routing and/or
136 metrics. If this doesn't make sense to you then just leave it out.
137 Example value: 192.168.2.129
139 source
141 The source option specifies the IOS device to which we telnet.
142 This is an IP address of an IOS Device that you/your server:
143 1) Have the ability to telnet to 2) Have a valid
144 username and password for
145 Example value: 192.168.2.1
147 This setting is mandatory.
149 vrf The vrf option allows you to specify the vrf for ping
151 Example value: VRF1
153
155 John A Jackson <geonjay@infoave.net>
156 based HEAVILY on Smokeping::probes::IOSPing by
158 Paul J Murphy <paul@murph.org>
160 based on Smokeping::probes::FPing by
162 Tobias Oetiker <tobi@oetiker.ch>
164
166 IOS configuration
167 The IOS device should have a username/password configured, as well as
168 the ability to connect to the VTY(s). eg:
169 !
171 username smokeping privilege 5 password 0 SmokepingPassword
172 !
173 line vty 0 4
174 login local
175 transport input telnet
176 !
177 Some IOS devices have a maximum of 5 VTYs available, so be careful not
179 to hit a limit with the 'forks' variable.
180 Requirements
182 This module requires the Net::Telnet module for perl. This is usually
183 included on most newer OSs which include perl.
184 Debugging
186 There is some VERY rudimentary debugging code built into this module
187 (it's based on the debugging code written into Net::Telnet). It will
188 log information into three files "TIPreturn", "TIPoutlog", and
189 "TIPdump". These files will be written out into your current working
190 directory (CWD). You can change the names of these files to something
191 with more meaning to you.
192 Password authentication
194 You should be advised that the authentication method of telnet uses
195 clear text transmissions...meaning that without proper network security
196 measures someone could sniff your username and password off the
197 network. I may attempt to incorporate SSH in a future version of this
198 module, but it is very doubtful. Right now SSH adds a LOT of
199 processing overhead to a router, and isn't incredibly easy to implement
200 in perl.
201 Having said this, don't be too scared of telnet. Remember, the
203 original IOSPing module used RSH, which is even more scary to use from
204 a security perspective.
205 Ping packet size
207 The FPing manpage has the following to say on the topic of ping packet
208 size:
209 Number of bytes of ping data to send. The minimum size (normally 12)
211 allows room for the data that fping needs to do its work (sequence
212 number, timestamp). The reported received data size includes the IP
213 header (normally 20 bytes) and ICMP header (8 bytes), so the minimum
214 total size is 40 bytes. Default is 56, as in ping. Maximum is the
215 theoretical maximum IP datagram size (64K), though most systems limit
216 this to a smaller, system-dependent number.
2172.7.3 2021-07-23 Smokeping_probes_TelnetIOSPing(3)