From: SIMON HART (simon.hart@btinternet.com)
Date: Mon Apr 04 2005 - 15:21:36 GMT-3
Hi Jongsoo,
Not sure about PPPoE, will have to look it up myself (I think you have to use Virtual Templates).
Ip in Ip is fairly easy to configure
Int Tunnel 1
tunnel destination x.x.x.x
tunnel source x.x.x.x
tunnel mode ipip
The interface tunnel command defaults to GRE. By using the tunnel mode command you can change the type of encapsulation used on the interface. Additional arguments are:
ipv6 (for ipv6 encapsulation .. note, GRE can be used as well)
dvrmp (canbe used for connecting a PIM router to a DVMRP domain, overcomes some issues with joins)
There are others but I am pretty certain you will not encounter them.
Anyway the best of British luck for you tomorrow. Hope all goes well
Simon
Jongsoo kim <bstrt2002@gmail.com> wrote:
Thanks Bruce for your excellent stuff as usual !!!
Now I know what you meant by "save show command on notepad" so I can build
TCL script.
Anyway, I readed your below advice and certainly it provide me more insight
to my list, which was stronlgy based on my learing from our Saturday study/
NMC checkitlab report and Brian's Audio.
In fact, below your thorough email makes me rethink that I may do
summary/route-filter/area range, etc ( these are considered as trap or RATHOLE
) after I achieve a full reachability after redistribution.
Also doing these stuffs at a same continguous time is more effiecient!
If I heard another 999,000 times more of "DO NOT GO DOWN A RATHOLE EARLY!"
from you, it would be 1 Million times in total.... And now it is engraved in
my brain... ^ ^
Even if I failed, it would never ne a case of " I was stuck on a couple of
questions, which watsed a lot of my time" as long as it is not L2 though.
Group
Now, I have a little concern on L2 ( I have never had an issue on L2 from
my last attempt though) , I never studied PPPoE and IPinIP.
Can someone urgently post a simple end-to-end config for PPPoE and IPinIP? (
Bruce, maybe could you copy paste it from NMC library somehow I can't access
it from my pc and I have no time to figured out my computer)
Thanks
Jongsoo
On Apr 4, 2005 6:04 AM, Andrew B. Caslow
wrote:
>
> Jongsoo,
>
> I am glad to see you are taking the "checklist" approach to CCIE
> preparation to heart. I like how you are attempting to list out all of the
> possible configuration options you might encounter for a given technology in
> your Checklist. Here are some suggestions to further enhancing your
> checklist:
>
> Consider performing this step either immediately before or after you
> enter your alias commands: Inspect and validate your access to each router
> and switch. Once access is validated, inspect each router/switch's IOS
> version, image type, and base configuration. Make sure that the interfaces
> found on your actual routers and switches match what is displayed in your
> Exam's diagrams. Also, make sure that the IP address's included in the
> initial configuration of each router and switch also match the IP addresses
> in your Exam diagram.
>
> Here is a suggestion to elaborating on your step 2, your "understand the
> topology" step. I believe this step is performed to "size up" the
> redistribution challenges you may encounter when you reach the Golden
> Moment. Correct me if I am wrong, but this step sounds like one of the
> opening steps we discussed in our recent Saturday study group. If this is
> not the same step, then disregard the following suggestions. If it is the
> same step we discussed in the study session, consider elaborating this step
> with the following three sub-steps: (1) determine whether there are any
> loops in your exam's topology, (2) If there are any loops, does each loop
> reside within a single IGP or does a given loop reside in multiple IGP's? If
> the loop resides entirely in one IGP, then the loop should present zero to
> little redistribution challenges. (3). If the loop is spread over multiple
> IGP's, then you need to determine which routing domain will be the transit
> domain and which will be non-transit. You do not need to get into the heavy
> details at this time since you are at the very beginning of the Exam. It
> should take you no more than a minute to perform this 3 step initial
> assessment to determine what challenges you may encounter in getting to the
> Golden Moment. For more information on strategies to attack CCIE lab
> redistribution requirements, read the following e-mails I posted early last
> year:
>
> http://www.groupstudy.com/archives/ccielab/200406/msg00335.html ,
> http://www.groupstudy.com/archives/ccielab/200406/msg00544.html and Also,
> the NMC Technical Library extensively discusses this topic.
>
> Between your listed steps of "understand the topology" and "Attack F/R",
> I suggest you add an interface classification step. While you have a section
> for Frame-Relay, CAT 3550, ATM and ISDN, you make no mention of the
> following logical interface types: GRE tunnels, IPinIP, BVI, PPPoE based
> interfaces, etc. All of these logical interface types could be encountered
> on the CCIE lab. While you know you are going to have a Frame-Relay,
> Ethernet, ATM and ISDN configuration requirement, you might also encounter
> these "logical" interface types. Many of the CCIE candidates that need to
> configure these "logical" interface types in their actual CCIE lab overlook
> these interface options. If you need to configure these "logical"
> interfaces, you will need to do this early in the test. Candidates that
> overlook these interface options, begin to fail the Exam within the first
> hour of the Exam. Furthermore, if you encounter these "logical" interfaces,
> more than likely they will not be explicitly mentioned. More than likely,
> you will be directed to configure these interfaces with seemingly vague and
> confusing wording which will force you to "spot the issue" on which specific
> logical interface(s) need to be implemented. Also, related to this same
> subject of interface classification, you must also determine which
> interfaces are performing Layer 2 forwarding and which are performing Layer
> 3 forwarding. All of this is represented in the interface classification
> decision diagram found in the NMC Technical Library. In reviewing our access
> logs, I noticed you were reviewing the page where this decision diagram
> resides recently. I suggest you include this interface classification step
> in your Checklist. For those in the GroupStudy community, I will PDF this
> decision diagram so that they can review it. Remember, for any configuration
> task, consider all options and make no assumptions!!!
>
> Everything that is written above is included in the NMC Technical
> Library. In the Technical Library, we have checklists for:
>
> Frame-Relay, Catalyst 3550,ATM, ISDN, PPPoX (PPPoFR, PPPoA, PPPoE),GRE.
> IPinIP, IRB, RIP/OSPF/EIGRP/ISIS, Redistribution, BGP, Multicast, QOS,
> Security, IPv6, DLSw+, NAT, DHCP,
>
> And a range of IP services.
>
> Furthermore, checkout these other checklists in the Technical Library:
>
> Pre-Exam Checklist Beginning of Exam Checklist, End of Exam Checklist,
> General Practices Checklist and a Desperation Checklist (AHHHH!!! OH NO!!!!
> J )
>
> If you have the time, I suggest you review these Checklists.
>
> It is our belief at NetMasterClass that much of the CCIE lab comes down
> to how well prepared and refined is a candidate's set of checklists are. At
> NMC, we see the CCIE lab as a duel between a CCIE candidate's checklists and
> the contents contained within a CCIE lab. The CCIE candidate's checklists
> should take into account all configuration options and all configuration
> assumptions that may be relevant to configuring a given internetworking
> technology. For any given technology, a CCIE candidate must consider all
> options and make no assumptions!!!
>
> In closing, here is a brief roadmap/checklist to taking the CCIE lab:
>
> First, view the entire CCIE lab as being divided into three major
> categories:
>
> Category #1: Topics Related to Attaining Universal UNICAST reachability.
> This category includes all link-layer technologies (Frame, CAT 3550, ATM,
> ISDN, logical interfaces), all IGP's, redistribution, BGP and any other
> topics related to attaining universal UNICAST reachability. This topics will
> make up about 40-45% of your Exam. In order to have a chance at passing the
> CCIE lab, you must complete all of these topics by lunchtime.
>
> Category #2: "The Big Three Topics that Build Upon Universal UNICAST
> Reachability": QoS, Multicast and Security. Each of these topics will
> possess an average point value of 6-10 points. These topics make up about
> 25-30% of your Exam.
>
> Category #3: "The Remaining Topics: IPv6, DLSw+, NAT, DHCP, HSRP, VRRP
> IP Services and IOS Features. Each of these topics will possess an average
> point value of 3-5 points. These topics make up about 30-35% of your Exam.
>
> Now, here is a general step-by-step test taking strategy:
>
> Step 1.1: After the proctor says "You may begin", open your exam
> workbook, briefly review all topics in the lab and locate the diagrams in
> the exam workbook.
>
> Step 1.2: Go to the pages that include the Exam diagrams and perform the 3
> step analysis of the exam's topology that is described above to attain a
> general determination of what redistribution challenges you might encounter
> just prior to the Golden Moment.
>
> Step 1.3: Perform the interface classification mentioned above.
>
> TOTAL ELAPSED TIME FOR STEPS 1.1-1.3: 5 minutes
>
> Step 2: With your exam workbook open to the pages with the diagrams,
> inspect your Exam racks hardware access, check that the interfaces and
> addresses displayed in your workbook's diagrams match up with what is in
> your workbook.
>
> TOTAL ELAPSED TIME FOR STEP 2: 5 minutes
>
> Step 3: Install your exam housekeeping and shortcut commands: no ip
> domain-lookup, alias commands, etc.
>
> TOTAL ELAPSED TIME FOR STEP 3: 5 minutes
>
> Step 4: Transpose the diagram(s) in your exam workbook onto a separate
> sheet of paper. If you can, provide a rough trace of the exam diagram in
> your workbook onto your personal worksheet. This step will result in drawing
> a "bare bones" Exam diagram. You will enhance this base diagram in the next
> step.
>
> TOTAL ELAPSED TIME FOR STEP 4: 5 minutes
>
> *****STEP 5: THIS IS A BIG STEP!!!! Now, you begin to apply all of your
> technology specific checklists. During this Step, you enhance the base
> diagram you created in Step 4. Starting with the link-layer configuration
> tasks, read carefully and consider all configuration options and explicitly
> identify and reflect on all configuration assumptions. Pay very careful
> attention to words/phrases such as "Do not", "only" and "default". Do not
> simply interpret these words/phrases as directing you to the correct answer.
> Think of these words/phrases as taking options away from you. Also, read
> ahead to determine if tasks in one section impact how you configure
> something in another section. It is during this Step, that you determine how
> you are going to configure a specific Exam tasks.
>
> TOTAL ELAPSED TIME FOR STEP 5: 25 minutes
>
> YOU ARE NOW 45 MINUTES INTO THE EXAM. NOW, BEGIN TO PERFORM THE HANDS ON
> CONFIGURATION TASKS OF YOUR EXAM.
>
> Step 6: Attaining Universal Reachability on a Per Link/Network Basis.
> Configure the Frame-Relay and the Catalyst 3550 VLAN's/trunks first; then
> configure the ATM, ISDN, p2p and logical interfaces (if any) second.
> Regarding ISDN, I would perform an ISDN test call (isdn test call interface
> bri0/0 xxxxxx) at this time and configure ISDN for link layer/basic IP
> connectivity only at this step. Do not configure any routing or dial backup
> solutions for ISDN at this time. AT THIS TIME, YOU SHOULD HAVE ALL OF THE
> INTERFACES INCLUDED IN YOUR LAB CONFIGURED AND REACHABLE ON A PER NETWORK
> BASIS ONLY. ALSO, NO INTERFACES SHOULD BE FLAPPING. This last statement is
> of particular relevance to ISDN. ALSO REMEMBER: DO NOT GO DOWN A RATHOLE
> EARLY. If you encounter a configuration requirement that involves some type
> of non-essential enhancement feature AND you don't know how to configure the
> feature, it is recommended that you make spend time attempting to configure
> the task at this time. Consider skipping the task and returning to it later.
> DO NOT GO DOWN A RATHOLE EARLY! You must make this decision on a case by
> case basis. However, it is strongly suggested to not begin wrestling with
> topics you do not feel very comfortable with early in the exam. It is
> recommended to reserve this mental wrestling match for later in the Exam.
>
> TOTAL ELAPSED TIME FOR STEP 6/Attaining Universal Reachability on a Per
> Network Basis: 40 minutes
>
> Step 7: Attaining Universal Reachability on a Per IGP Basis. Configure
> your IGP's. Focus on base connectivity first. Then focus on topics such as
> metric adjustment, summarization, timer adjustment and authentication.
>
> TOTAL ELAPSED TIME FOR STEP 7/Attaining Universal Reachability on a Per
> IGP Basis: 30 minutes
>
> Step 8: THE GOLDEN MOMENT: Attaining Universal Reachability on an
> inter-IGP basis via Redistribution. It is recommended to configure only as
> much redistribution you need to in order to fulfill the configuration
> requirements of the Exam. Remember to test your redistribution configuration
> with the TCL script we discussed. It sounds like you have become comfortable
> with it. You mention it in your posted Checklist.
>
> TOTAL ELAPSED TIME FOR STEP 8/Attaining the Golden Moment: 30 minutes
>
> YOU ARE NOW 145 MINUTES (2 hours 25 minutes) INTO THE EXAM. To give
> yourself a time buffer as you approach the Golden Moment, add an additional
> 35 minutes. Therefore, your target timetable for getting to the Golden
> Moment should be 3 hours.
>
> Step 9: Attaining Universal Reachability on an inter-AS Basis: BGP. The
> general points in your posted Checklist provide a good outline for attacking
> BGP.
>
> TOTAL ELAPSED TIME FOR STEP 9: 60 minutes
>
> It is now lunchtime. This is a suggested goal. Have all configuration
> tasks performed up to BGP by lunchtime.
>
> Right before you leave for your lunch break, it is suggested that you
> save all of your configurations and reload your routers.
>
> LUNCHTIME: During lunchtime, review what configuration tasks you may have
> skipped in the morning. Remember, you don't want to go down any ratholes
> during the morning of the Exam. Also, review what topics are remain to be
> configured in your Exam. Lunchtime allows you to get out of the time
> pressure of the Exam and plan your test taking strategy without having time
> pressure impacting you. Many CCIE candidates like to identify and select
> what remaining topics they feel very comfortable with and prepare to
> configure these topics as soon as the lunch break ends. This is called the
> "grab the low hanging fruit" step in the CCIE lab. Candidates plan their
> "grab the low hanging fruit" step during lunch time.
>
> END OF LUNCH
>
> Step 10: As soon as lunch has ended, you return to your equipment rack
> that you reloaded right before lunch. Immediately after lunch, perform a
> comprehensive verification of your morning configuration with a TCL script
> similar to the one provided at the very end of this e-mail. For more details
> on this TCL script, go to the NMC technical library. Once you have performed
> your comprehensive verification, "grab the low hanging fruit" configuration
> sections in your lab. Perform all sections in the lab that you feel very
> comfortable with. There is one exception to this suggestion: Keep all
> Security/ACL based tasks towards the end of the lab. These types of tasks
> can create additional complications of configuring and verifying the
> non-security/ACL related tasks. Remember your experience with the Catalyst
> VLAN ACL's and their impact on RIP routing in the CHECKiT practice lab you
> performed last Monday.
>
> TOTAL ELAPSED TIME FOR STEP 10/GRABBING THE LOW HANGING FRUIT: 90 minutes
>
>
> Step 11: THE MOMENT OF TRUTH/THE MOMENT OF RECKONING!!!!! At this moment
> in your Exam, you have performed all of the configuration tasks you felt
> comfortable with. You now must go back and perform all tasks you have
> skipped. The big question will be, how much of the Exam have you skipped up
> to this moment? Is it 10%, 20%, 40%, 60%? It is at this moment, when you
> know what chances you have at passing the Exam. For configuration sections
> that you have skipped and have confused you, apply your Desperation
> Checklist to these topics. See the Desperation Checklist in the NMC
> Technical Library. Remember to use the +univercd and +122newft search
> options. For more details, see Appendix C of the NMC Technical Library.
>
> Step 12: Perform any security related tasks last. At no later than 45
> minutes before the end of your Exam, save all of your configurations, reload
> your routers and check your work!!!!
>
> I hope these points are of some use to you. They are a general
> compilation of steps that our students have applied over the last 7 seven
> years. You may want to apply a different strategy. Apply whatever strategy
> that you feel comfortable with. What is very encouraging is THAT YOU HAVE A
> DETAILED STRATEGY!!!! Many candidates do not have a well thought out end to
> end CCIE lab strategy.
>
> In closing, best of luck in your lab tomorrow. May your Checklists guide
> you well in your Exam, please consider all configuration options, and
> explicitly reflect on all configuration assumptions. You are one excellent
> CCIE candidate!
>
> If anything else should come to mind, I will e-mail it to you. I hope all
> is well.
>
> BEST OF LUCK!!!!!
>
> -Bruce
>
> Here is a a Sample Comprehensive Verification TCL Script:
>
> tclsh
>
> sh fram pvc | i ST
>
> sh atm ilmi-stat | i IF
>
> sh cdp neigh
>
> sh ip o n
>
> sh clns is-neigh
>
> sh ip eigrp neigh
>
> sh ip bgp summ | b ^Nei
>
> sh ip pim neigh
>
> sh dlsw peer
>
> sh ip ro | i
>
> sh ip bgp | i
>
> sh ipv o n
>
> sh bgp summ
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