There is already a good solution in the post above. Which is very much appreciated but there is a limitation.
Person wanting to run the script need to write/generate the list(rows) containing all the ip addresses which needs to be pinged.
For example if there was a need to ping ip ranging from 192.168.0.1 to 192.168.0.16
Either all the ip addresses need to be typed manually or generated using some automated method.
192.168.0.1
192.168.0.2
192.168.0.3
.
.
.
.
192.168.0.16
Moreover, If a template file is created for future use and next time the need arises to ping ip in different subnet e.g 10.10.0.1 to 10.10.0.32
Then either the ip list need to be typed manually, automated or find and replace feature need to be used.
A quick solution with minimal input every time ping is required would be to use cisco IOS terminal shell feature. Examples are shown below from different switches
Script syntax:
enable
terminal shell
terminal shell trace
n=0
while true; do
let n++
if [[ $n -le 5 ]]; then
#echo $n
ping ip 10.12.32.$n timeout 1 repeat 1
else
break;
fi
done
Example 1:
SWITCH-1#sh ver | i Model Number
Model Number : C9300-48P
SWITCH-1#
SWITCH-1#
SWITCH-1#
SWITCH-1#sh ver | i C9300-48P
cisco C9300-48P (X86) processor with 1343576K/6147K bytes of memory.
Model Number : C9300-48P
* 1 65 C9300-48P 16.12.4 CAT9K_IOSXE INSTALL
SWITCH-1#enable
SWITCH-1#terminal shell
SWITCH-1#terminal shell trace
SWITCH-1#
SWITCH-1#
SWITCH-1#n=0
SWITCH-1#while true; do
do..done>let n++
do..done>if [[ $n -le 5 ]];
then.else.fi> then
then.else.fi>ping ip 10.12.32.$n timeout 1 repeat 1
then.else.fi>else
else..fi>break;
else..fi>
else..fi>fi
do..done>done
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 10.12.32.1, timeout is 1 seconds:
!
Success rate is 100 percent (1/1), round-trip min/avg/max = 1/1/1 ms
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 10.12.32.2, timeout is 1 seconds:
!
Success rate is 100 percent (1/1), round-trip min/avg/max = 1/1/1 ms
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 10.12.32.3, timeout is 1 seconds:
!
Success rate is 100 percent (1/1), round-trip min/avg/max = 9/9/9 ms
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 10.12.32.4, timeout is 1 seconds:
.
Success rate is 0 percent (0/1)
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 10.12.32.5, timeout is 1 seconds:
.
Success rate is 0 percent (0/1)
Above shows few successful and unsuccessful pings.
Example 2:
TEST-SWITCH#sh ver | i Model number
Model number : WS-C2960-24PC-L
TEST-SWITCH#sh ver | i WS-C2960-24PC-L
cisco WS-C2960-24PC-L (PowerPC405) processor (revision C0) with 65536K bytes of memory.
Model number : WS-C2960-24PC-L
* 1 26 WS-C2960-24PC-L 15.0(2)SE8 C2960-LANBASEK9-M
TEST-SWITCH#enable
TEST-SWITCH#terminal shell
TEST-SWITCH#terminal shell trace
TEST-SWITCH#n=0
TEST-SWITCH#while true; do
do..done>let n++
do..done>if [[ $n -le 5 ]];
then.else.fi> then
then.else.fi>ping ip 10.12.32.$n timeout 1 repeat 1
then.else.fi>else
else..fi>break;
else..fi>
else..fi>fi
do..done>done
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 10.12.32.1, timeout is 1 seconds:
!
Success rate is 100 percent (1/1), round-trip min/avg/max = 1/1/1 ms
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 10.12.32.2, timeout is 1 seconds:
!
Success rate is 100 percent (1/1), round-trip min/avg/max = 1/1/1 ms
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 10.12.32.3, timeout is 1 seconds:
!
Success rate is 100 percent (1/1), round-trip min/avg/max = 9/9/9 ms
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 10.12.32.4, timeout is 1 seconds:
.
Success rate is 0 percent (0/1)
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 10.12.32.5, timeout is 1 seconds:
.
Success rate is 0 percent (0/1)
TEST-SWITCH#
Above shows few successful and unsuccessful pings.
Basic command/script explanation:
# Enter enable mode
enable
#Set shell environment for current terminal
terminal shell
#Turn on trace for current shell terminal
terminal shell trace
# below the variable n is initialized with value 0
n=0
# While loop begins
while true; do
# variable counter incrementing for every iteration
let n++
# if condition checks the value of variable is less than and equal to 5. You can change 5 to another number (last octet in ipv4)
if [[ $n -le 5 ]]; then
# doing ping to one ip in one iteration and pinging next ip in next iteration. starting from 10.12.32.1 then 10.12.32.2, 10.12.32.3, 10.12.32.4 and finally 10.12.32.5. ping Timeout is 1 sec and repeat count is set to 1.
ping ip 10.12.32.$n timeout 1 repeat 1
# else condition
else
break;
fi
done
Note:
In order to disable the Shell CLI, enter:
Switch#terminal no shell
Above will disable shell for current terminal session
Whereas to set shell permanently, user the command
shell processing full
and save the config.
Example:
TEST-SWITCH#conf t
Enter configuration commands, one per line. End with CNTL/Z.
TEST-SWITCH(config)#shel
TEST-SWITCH(config)#shell ?
init Initialisation options
map Map event trigger to function
processing Enable shell processing
trigger Set shell trigger configuration
TEST-SWITCH(config)#shell pro
TEST-SWITCH(config)#shell processing ?
full Enable shell processing in all IOS modes
<cr>
TEST-SWITCH(config)#shell processing f
TEST-SWITCH(config)#shell processing full
TEST-SWITCH(config)# do write
Building configuration...
[OK]
