Takes the output from show cdp ne det | i Dev|IP a from a core switch and returns a sorted list of IP Address and hostnames of the CDP neighbors.
This is useful when you show up at a customer site you aren't familiar with and need to log into several edge switches. Instead of having to look through the raw output of the switch you get a consolidated list with just an IP address and hostname.
The output is formatted to work with Nirsoft.net's PingInfoView.
PingInfoView is a free tool for Windows from Nirsoft PingInfoView that allows you to ping multiple hosts at one time. It is a really great tool.
I use it during core switch cutovers to make sure that all servers/switches/devices are up after the cutover. To manually create the list of switches at a large site is time consuming but this script will do it in a second.
Usage:
Note: Occasionlly I have seen a switch return one IP address instead of two for a switch. Rerunning the show command usually corrects the issue.
The script takes the output from a show cdp neighbor detail | i Dev|IP a and turns it into the input needed
by PingInfoView.
On Windows py pinginfo.py
On Linux python3 pinginfo.py
Example of show cdp neighbor detail | i Dev|IP a on a newer IOS.
Device ID: Test-IDFM-M1-SW01
IP address: 10.131.3.112
IP address: 10.131.3.112
Device ID: Test-IDFSE-SE1-SW01
IP address: 10.131.3.115
IP address: 10.131.3.115
Device ID: Test-IDFZ-Z3-SW01
IP address: 10.131.3.117
IP address: 10.131.3.117
Device ID: Test-IDFV-V3-SW01
IP address: 10.131.3.108
IP address: 10.131.3.108
Device ID: Test-IDFU-U3-SW01
IP address: 10.131.3.109
IP address: 10.131.3.109
Older IOS versions will display this.
Device ID: test-MDF1
IP address: 10.52.1.10
Device ID: test-IDF1
IP address: 10.52.1.20
Device ID: test_4-Post
IP address: 10.52.1.30
The script will figure out which format the output is in and work either way.
mhubbard@1S1K-SYS76:~/Dropbox/Python/Scripts$ python3 pinginfo.py
10.52.1.10 test-MDF1
10.52.1.20 test-IDF1
10.52.1.30 test_4-Post
for use with PingInfoView, either save the output to a file for future use or click File, Ping Options and paste it in.