Paranoid IOS upgrade checks

Hello

Today I’m at work and i’m doing paranoid upgrade checks before equally paranoid (amount-wise) upgrades.

Let’s say that before the upgrade you want to check how many CDP neighbors you have. Your naming plan for your infrastructure is simple:

• names of switches begin with SWT
• names of APs begin with AP
• names of phones begin with SEP
• etc

Of course we run the command show cdp neighbor to display the number of neighbors. We want to do two things before an upgrade:

• count the number of neighbors
• export the output of the command to some backup server

 

You can count the number of neighbors with:

show cdp neighbor | count ^(SWT|AP|SEP)

Number of lines which match regexp = 44

 

You can export the output of any command with the redirect option:

show cdp neighbor | redirect ftp://1.1.1.1/mybackups/backupofshowcdpneiSwitch1beforeNov5upgrade.txt

and then after the upgrade:

show cdp neighbor | redirect ftp://1.1.1.1/mybackups/backupofshowcdpneiSwitch1afterNov5upgrade.txt