Cisco CCNA (640-553) Security Exam Training – Using the “Clear Crypto Datapath” Command

In today’s article, I’m going to quickly inform you about the Cisco IOS privileged EXEC mode command named “clear crypto datapath.” CCNA’s (like you) use the “clear crypto datapath” command to clear the counters or error history buffers in an encrypted network.

In other words, you can use this command to clear the history buffers or counters associated with an encrypted data path.

Note: If you decide to use this command you must use either the “ipv4” keyword or the “ipv6” keyword to specify which type of network you’re on. And, if you only use the IP version keyword, all counters will be cleared. But, if you only need to clear a specific counter enter the keyword for that counter.

Below is the command’s syntax:    how to read crypto charts

clear crypto datapath {ipv4 | ipv6} [error internal | punt | success]

As you can see, the command uses several keywords:

ipv4 – Use this required keyword if you’re on an ipv4 network; clears all counters for that network.

ipv6 – Use this required keyword if you’re on an ipv6 network; clears all counters for that network.

error – This (optional) keyword is used to clear the error history buffer.

internal – This (optional) keyword is used to clear the internal event buffer.

punt – This (optional) keyword is used to clear the punt event counter.

success – And, this (optional) keyword is used to clear the success event counter.

Below are two examples of the command being used:

Router#clear crypto datapath ipv4 

Router#clear crypto datapath ipv4 punt 

In the first example, all the counters on an ipv4 network are being cleared; and with the second example, only the punt event counter is being cleared for the ipv4 network.

By the way, if you decide to use the command, make sure your router(s) is running Cisco IOS 12.4(9)T or higher

I hope this article was very informative and helped you quickly understand the usage of the clear crypto datapath command. If you need to learn more; I suggest you visit my website, were you’ll find the latest information regarding the Cisco CCNA (640-553) Security exam techniques.