Category: CCIE

OSPFv3 with Address Family Verification

OSPFv3 with Address Family Verification

There are three different verifications to be done with OSPF depending on if they were done with OSPFv2, traditional OSPFv3, and OPSFv3 with Address Families. I will only cover the checks for OSPFv3 with address families here as the other two options are easy to determine. The OSPFv3 has some quirks that make verification a…

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BGP local-as no-prepend

BGP local-as no-prepend

So it is amazing how something will finally just click. I have done several different labs working with the local-as, no-prepend, replace-as, dual-as and the no-prepend was something I just was not understanding. The purpose of these strings is to allow for conversion of a BGP AS number with clients where you can modify or…

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iBGP and Next Hop

iBGP and Next Hop

I have the hardest issue with next-hop-self. This is a very crucial part of BGP especially when you have iBGP peerings. If a BGP neighbor cannot get to the Next Hop it will NEVER put the route into the routing table. While there is no automatic rule to this, generally when you have an eBGP…

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Cisco Certification Changes!!!!

Cisco Certification Changes!!!!

So Cisco is updating the CCIE among other things. Feb 2020 is the month it all changes. This will definitely get me motivated to take the exam again. Working through Narbik’s Foundation then Advanced Labs. I’m using his recommended method along with the Learning to learn series where I am taking notes of what I…

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How did I miss this about BGP Backdoor???

How did I miss this about BGP Backdoor???

I have been working on my CCIE for over 2 years now and somehow I have never paid attention to the backdoor command. I would do an in depth overview of it but Steve did an excellent overview on his blog located here. Check it out! https://ccieblog.co.uk/bgp/bgp-backdoor TLDR I somehow never noticed that the network…

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DMVPN and NHRP debug commands

DMVPN and NHRP debug commands

Please see the full RFC2332 for complete information pertaining to NHRP. What I am going to document here is some commands and their outputs for some various scenario’s. Scenario 1 – R4 is the NHS (Next Hop Server). R3 is the NHC (Next Hop Client). R3 will have a static route towards the NBMA of…

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Narbik’s Lab books

Narbik’s Lab books

I am about 2 years into the CCIE journey and wanted to give some feedback and/or recommendations on labs. Specifically Micronics Training (aka Narbik’s). Up to this point I have done the INE labs, 360 Labs, Khawar Butt’s Labs, and Narbik’s Labs. I will put the links at the bottom of this blog. You can…

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Excellent spanning tree command

Excellent spanning tree command

It is amazing to me the commands out there I have not seen before. I like this one a lot. Very concise and gives you some pretty significant information. show spanning-tree vlan 12 bridge

Best IPv6 Book I have read so far!

Best IPv6 Book I have read so far!

I recently discovered this book and I cannot recommend it enough. The author work was enjoyable to read. It is also pretty up to date. A lot of the older books have some technologies and standards that have been deprecated. Such as Site Local Addressing. This 2nd Edition was published in 2017. If you are…

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