From: Marut S@MS@DCTH-BKK (S@MS@DCTH-BKK)
Date: Sat Mar 10 2007 - 02:27:39 ART
Hi group,
I have tested it again. No need to disable cef.
Rack1R5#sh ip cef serial 3/0
Prefix Next Hop Interface
30.0.0.0/14 141.1.145.4 FastEthernet0/0
141.1.54.4 Serial3/0
31.0.0.0/14 141.1.145.4 FastEthernet0/0
141.1.54.4 Serial3/0
141.1.54.0/24 attached Serial3/0
141.1.54.4/32 141.1.54.4 Serial3/0
150.1.4.4/32 141.1.145.4 FastEthernet0/0
141.1.54.4 Serial3/0
204.12.1.0/24 141.1.145.4 FastEthernet0/0
141.1.54.4 Serial3/0
!
interface Serial3/0
ip address 141.1.54.5 255.255.255.0
frame-relay de-group 1 504
frame-relay map ip 141.1.54.4 504 broadcast
no frame-relay inverse-arp
end
access-list 11 permit any
frame-relay de-list 1 protocol ip list 11
Rack1R5#sh frame-relay pvc | b 504
DLCI = 504, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial3/0
out BECN pkts 0 in DE pkts 58 out DE pkts 62
Rack1R5#sh frame-relay pvc | b 504
DLCI = 504, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial3/0
out BECN pkts 0 in DE pkts 62 out DE pkts 67
Best Regards,
Maruto
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Brian Dennis
Sent: Saturday, 10 March, 2007 7:44 AM
To: iyux2000@gmail.com; ccielab@groupstudy.com
Subject: Re: CCIE Lab : ip cef
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. > >
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