IE Mock Lab 4

Well, not near as bad as I thought. My score was 80, but I did make a couple of silly errors that pissed me off a bit.

• I lost 3 points for task 2.1 in frame relay because it said that i’m only allowed to use one mapping statement on R1 to reach both R5 and R2. I did only use one mapping statement and thought that if I use point-to-multipoint in the IGP section then it meets the requirements. Nuh uh. What I should have done was used the static mapping on R1 to R2 (the other spoke) and then INARP would sort out the reachability to R5….tricky! I guess this teaches me that a tasks requirements has to be met by the task on its own. If only it worked the same way when it came to tasks breaking other tasks!!!
• I lost 2 points for task 2.5 because I didnt disable inverse arp on R6!!! Bah, even the solution guide doesnt say to do that!
• Task 3.1 was for PPP (3 points) and it said that R4 wasnt allowed to have its IP address assigned to the Serial interface. So I set up the remote router to assign the address using IPCP. What I didnt pay close attention to was the subnet mask, it HAD to be a /24 not /32. A multilink interface was required to solve this.
• Task 4.5 I lost 2 points because R4 had a specific route to reach R5’s loopback. I cant verify this now, but im not too surprised.
• Task 4.6 for 2 points was rather interesting, and I didn’t even do it for the reason that if I did, and it wasn’t correct I would risk losing my 4 (maybe 6 total) points in task 4.4. Heres my logic: The OSPF domain has area 0 spread everywhere making it discontiguious in multiple places. Task 4.4 says to fix all this up (implying virtual-links or tunnels) BUT it says “do not use tunnels to accomplish this task”. Fine, virtual-links it is. Then you come to 4.6 and it says that you need to make sure that OSPF connectivity is still maintained if the link between SW2 and R5 lose the link between each other (R4 is attached to SW2). Another requirement is that you are NOT allowed to enable OSPF on R4’s interface towards SW1.

  Now with my CCIE lab hat firmly on I thought to myself, if I use a tunnel here to connect R4’s area 0 back into the OSPF domain I’m essentially breaking the rules of 4.4. Then I thought…nah, maybe theres another way to do it. Weighing it up for about 5 minutes I thought, fuck this….there is only one other way to do it….but i’m not gonna risk it.

  I should have just trusted my instincts. Had there been a proctor available I wouldn’t have thought twice about badgering him on this kind of question.

• Next up after breezing through BGP, Multicast, and IPv6 was task 8.2 in QoS. For one measly point I didn’t structure my policy map correctly and therefore broke the task.
• Task 9.3 was a stupid mistake of knowing what I needed to do but just missing it, aaa authentication password-prompt was the command and although I did the username I somehow forgot the second part of it. Bugger.
• 10.1 was probably the most annoying loss of three points ever. And this kind of thing has got me more than once. I configured the TFTP server IP address for Rack1 not Rack 15!!!! I think that for the real lab i’ll be running the following command on all my devices before finishing – show run | inc X.1. where X is the major network number(’s) in the topology.
• Last up was 10.2 and it was an SNMP feature I hadnt heard of. snmp-server tftp-server-list enables the routers configuration to be downloaded by the management station. 3 points!