From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Fri Mar 09 2007 - 21:43:41 ART
Here is how you can answer your own questions:
Q) is (cef) enabled by default or not, regarding to the current IOS version
that is used in the lab exam.
A) Refer to the CCIE R&S Lab Equipment and IOS blueprint
(http://www.cisco.com/go/ccie). Find what IOS version is being used. Look
up the "ip cef" command in the command reference for the IOS
version/versions being used to find out what is the default state of the
command.
Q) For example, FR de marking mechnism needs to disable ip cef, isn't it?
A) Configure FR DE marking for all packets. Ensure CEF is enabled. Ping
across the Frame Relay network. View the number of frames that arrived with
the DE bit set (show frame-relay pvc). Now disable CEF and try again.
--Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP) bdennis@internetworkexpert.com Internetwork Expert, Inc. http://www.InternetworkExpert.com Toll Free: 877-224-8987 Direct: 775-745-6404 (Outside the US and Canada)
On 3/9/07 2:49 PM, "iyux2000@gmail.com" <iyux2000@gmail.com> wrote:
> Hi, group > > "ip cef" command is always mysterious for me, i want to know in the real > lab, "ip cef" is enabled by default or not, regarding to the current IOS > version that is used in the lab exam. > > And also which configurations rely on this command to work properly, and which > not. > > For example, FR de marking mechnism needs to disable ip cef, isn't it? > > I thought that what we need to do is just disabling ip cef in some > circumstances if "ip cef" is activated by default in the lab. > > Thank you very much for your reply. > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html
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