Moving On…

Posted on February 20, 2009 by David Sudjiman

I downloaded the IEWB materials on Jan 1st, yes, that’s a new year and I couldn’t convince myself not to go near any computer.

I started the WB about 2 weeks ago. Kind of hard to resume studying after couple of months busy with work and fixing stuff for my new place. Anyway, excuses won’t keep me forward, perseverance does.

Back in late December 2008, I was struggling to convince myself to buy InternetworkExpert materials. Luckily, InternetworkExpert provided 25% discount and financing. So, I took the deal with 6 months financing. It was on 31 December 2008, the last day of the offer.

Downloaded the EIGRP WB on Jan 1st and I had to put it down until I make a commitment to resume my study, and it was about two weeks ago.

When I started to resume my study, I really couldn’t focus myself as I have so many things to do at once. I have to study several materials such as Security, Wireless, and Voice for work. It’s not that my company doesn’t have other resources and fall everything to me, I just thought that I need to have a bit of understanding for those areas before asking around.

Again, excuses won’t move me forward. Like yesterday, I had a request from the customer to add a new subnet on the data center and I had to do some discovery how should it be done. It took me a nearly 5 hours straight just to get to know the routing plus the core switches are Alcatel 7800. I dug down the documentation and starring the monitor for hours.

Went back home sat down in front of TV for nearly 3 hours and felt didn’t want to study. Then I said to myself to have a shower and move-on to study. Yes, shower heals!

I just doesn’t work by pitying myself and give all of the excuses.

A friend of mine told me that he has to drive to office for an hour every night to lab and drive back home around 1-2am every day. And he has a wife and kid.

I’m no par of him, despite any excuses to make justification, I have to keep moving on and pressing on.

Ok, EIGRP is finished, along with Bridging and Switching I did few months before.

Well, It’s hard but look at me, I’ve finished two WBs.

I’m moving on…

Fsck-ing Blind!

Posted on February 16, 2009 by David Sudjiman

I’m doing InternetworkExpert WB 1 v5.0 5.20 EIGRP Filtering with Prefix-Lists. Actually, I’ve been doing it since last night but get stucked on R1 that’s not getting 3(0|1).[0-3].0.0 routes from R5. Well, InternetworkExpert should inform on the workbook that I need to remove the stub network form R5 so that R1 will receive route advertisement from it. But it was fun, though, that I could figure it out myself.

The second issue was that I needed to block 155.1.146.4/32 from advertising network 3(0|1).[0-3].0.0. It was actually pretty simple. Use the distribute-list prefix. So this is what I did.

Rack1R1#sh run |  s router eigrp
router eigrp 100
 timers active-time 1
 network 155.1.0.1 0.0.0.0
 network 155.1.13.1 0.0.0.0
 network 155.1.146.1 0.0.0.0
 metric weights 0 0 0 1 0 0
 distribute-list prefix PERMIT_ALL gateway NOT_FROM_R4 in
 auto-summary

Rack1R1#sh run | i prefix-list
ip prefix-list NOT_FROM_R4 seq 5 deny 155.1.46.4/32
ip prefix-list NOT_FROM_R4 seq 15 permit 0.0.0.0/0 le 32
ip prefix-list PERMIT_ALL seq 5 permit 0.0.0.0/0 le 32

Damn it! I’ve been spending hours to troubleshoot what the heck was wrong with the prefix-list and why there was no hit for 155.1.46.4/32!

Rack1R1#sh ip prefix-list d
Prefix-list with the last deletion/insertion: NOT_FROM_R4
ip prefix-list NOT_FROM_R4:
   count: 3, range entries: 1, sequences: 5 - 15, refcount: 3
   seq 5 deny 155.1.46.4/32 (hit count: 0, refcount: 2)
   seq 15 permit 0.0.0.0/0 le 32 (hit count: 8982, refcount: 1)
ip prefix-list PERMIT_ALL:
   count: 1, range entries: 1, sequences: 5 - 5, refcount: 2
   seq 5 permit 0.0.0.0/0 le 32 (hit count: 16082, refcount: 1)

Blind as bat! it should be 155.1.146.4/32 instead of 155.1.46.4/32.

Rack1R1(config)#do sh ip pref d
Prefix-list with the last deletion/insertion: NOT_FROM_R4
ip prefix-list NOT_FROM_R4:
   count: 3, range entries: 1, sequences: 5 - 15, refcount: 3
   seq 5 deny 155.1.146.4/32 (hit count: 26, refcount: 1)
   seq 10 deny 155.1.4.4/32 (hit count: 0, refcount: 2)
   seq 15 permit 0.0.0.0/0 le 32 (hit count: 10998, refcount: 1)
ip prefix-list PERMIT_ALL:
   count: 1, range entries: 1, sequences: 5 - 5, refcount: 2
   seq 5 permit 0.0.0.0/0 le 32 (hit count: 18124, refcount: 1)

Case closed, no brainer solution!

NME doesn’t support L3 port-aggregation.

Posted on February 1, 2009 by David Sudjiman

I thought it was dynamips issue for not being able to create L3 port-aggregation on NME. However, after reading these three posts, I’m convinced that NME just doesn’t support L3 port-aggregration.

David Sudjiman

“Being different is hard, but not being different is harder.”

Monthly Archives: February 2009

Moving On…

Fsck-ing Blind!

NME doesn’t support L3 port-aggregation.