Cisco CCNA (640-553) Security Exam Training - Using the "clear Eou" Command

In today's article, I'm going to inform you about the Cisco IOS privileged EXEC mode (router#) command named "clear eou". Network administrators (like you) use the "clear eou" command to clear all client device entries that are associated with a particular interface or that are on the network access device (NAD).

Below is the command syntax:

clear eou {all | authentication {clientless | eap | static} | interface {interface-type} | ip {ip-address} | mac {mac-address} | posturetoken {name}}

As you can see, the command has several keywords and arguments you can use:

all - This keyword is used to remove (clear) all client device entries.

authentication - This keyword indicates the Authentication type.

clientless - This keyword indicates the Authentication type is "clientless".

eap - This keyword indicates the Authentication type is "Extensible Authentication Procotol" (EAP).

static -- This keyword indicates the Authentication type is "static".

interface - This keyword is used to display information about an interface.

interface-type - This argument specifies the type of interface; this argument can be either of the following interfaces: Async, BVI, CDMA-Ix, CTunnel, Dialer, Ethernet, Lex, MFR, Multilink, Null, Serial, Tunnel, Vif, Virtual-PPP, Virtual-Template, and Virtual-Tokenring.

ip - This keyword indicates a IP address.

ip-address - This argument is the IP address of the client.

mac - This keyword indicates a MAC address.

mac-address - This argument is the client's 48-bit address.

posturetoken - This keyword indicates a "Posture token name".

name - And, this argument is the "name" of the Posture token.

In the example below, the router is having its entire client device entries cleared:

Router#clear eou all

And by the way, if you decide to use this command; make sure your router(s) is running Cisco IOS 12.3(8)T or higher.

I hope this article was very informative and helped you quickly understand the usage of the clear eou 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.

To your success,

Charles Ross, CCNP #CSCO10444244 is the owner of Ittechtips.com; where you'll find free comprehensive information and videos on how to pass the CCNA (640-553) security exam.