CCIE or Null!

My journey to CCIE!

Posts Tagged ‘CCIP

Passed QoS and got my CCIP!

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Well after 7 months of studying and 2 exams later I’ve finally obtained my CCIP! When I initially thought about going after my CCIP I said this shouldn’t be too bad after going through Routing TCP/IP Volume II, BGP Design & implementation, and half way through MPLS fundamentals (See my Library page on the left for links) I was really starting to feel it. I kept moving along and passed the 642-691 I got a little bit of hope and jumped right into QoS. The funny thing about QoS was I didn’t realize how much I really new about it, nor did realize how much more I could do with it. QoS certainly was an interesting topic to learn, and I am sure I’ll be learning even more about it as time goes on.

Now that I’m done with my CCIP, I think I am going to take a small break from studying. I am going to focus back on my blog (So hopefully I will get some more updates out) and I am going to start building my own home lab for whenever I decide to start studying for my CCIE (not sure when but I will pursue that eventually). Not a bad way to start the new year right?

Written by Stephen J. Occhiogrosso

January 5, 2012 at 7:58 PM

BGP+MPLS passed onto QoS!

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Well I was finally able to sneak out of the office to go take the BGP+MPLS 642-691 exam earlier this week, something I have been trying to do for almost 2 weeks now. I really didn’t think finding the time to schedule the test was going to be the toughest part. The test took me an hour, and I passed so all my studying and work has paid off.

I was honestly a bit disappointed with the test, it seemed a bit more one-sided to me and the simulations were less than challenging in my opinion. I’ve done much more complicated labs in GNS3 and at work that matter. So as I was going the exam I felt more and more confident and really over-prepared. I do suppose it’s better than the alternative and failing the exam so I won’t dwell on this any further I passed and I am one step closer (well two technically) to getting my CCIP certification.

I’ll be jumping into QoS in hopes of taking this test by end of the year, and starting 2012 with my CCIP Certification!

Written by Stephen J. Occhiogrosso

November 20, 2011 at 12:35 PM

Posted in Certification

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Watching BGP neighbors form.

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BGP can be considered quite the routing protocol and typically tends to intimidate those that do not fully understand it. So I’m basically going to start from the ground up here and start from the forming of BGP neighbors.

Here is our topology, something nice and simple.

Now we are going to configure the BGP neighbor statements on our two routers.

While I run the debug ip bgp ipv4 unicast command on Router2:

From the debug output we see the two routers form a neighbor relationship as it goes through all of its phases.

  1. It starts from the Idle state, Idle is the phase that any BGP connection starts.
  2. Now you see move from Idle to Active in the Active state the BGP device is still trying to setup BGP session with its peer.
  3. Then you see we go from Active to OpenSent which shows we received a BGP Open message from the peer.
  4. Now continuing over the next few lines, you see this device sending out its Open message with its BGP version, AS number, and hold time. After that you will see the device receive an Open message from it’s neighbor and acknowledge its neighbor’s BGP capabilities.
  5. Now third line from the bottom we will see the status go from OpenSent to OpenConfirm, in this phase the BGP peers are simply waiting to receive a keep alive from the other.
  6. Then almost immediately we go from OpenConfirm to Established, and the BGP neighbor is up.
To verify this we will issue the sh ip bgp nei summary command and verify the neighbor has been up for the last 5 seconds and no prefixes have been received. If the neighbor ship was not up then it would tell us the State of the adjacency (instead of the number of prefixes received).

Written by Stephen J. Occhiogrosso

September 6, 2011 at 6:43 AM

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