IPV6: Quick straight forward notes on differences in modes for exam day!

Going to cut right to the chase here for exam day what you will need to know without a lot of explanation, as I've been reading the white papers for my second attempt this Friday, and there are just some things to know without knowing all the "why." NTPv6 - This does the same function … Continue reading IPV6: Quick straight forward notes on differences in modes for exam day!

IPv6: Tunnel type review, links to IPv6 address identification, migration, and GRE / DMVPN that I highly encourage you to review!

I know I said no more posts, but IPV6 was begging for some kind of review before exam day so here it is! There are two general ways to route IPv6 packets, those being a fully native end to end IPv6 network from host - across the WAN - to the end host and back, … Continue reading IPv6: Tunnel type review, links to IPv6 address identification, migration, and GRE / DMVPN that I highly encourage you to review!

A collection of IMPORTANT links to review and know for exam day, then a quick overview of LSA Types / OSPF Router Types!

I pulled this topology from my older posts when I took a deep dive into the world of LSA's, how to read the Topology table like a laundry list and under stand it, and what type of routers did what. First I want to list links that are absolutely vital to read and understand for … Continue reading A collection of IMPORTANT links to review and know for exam day, then a quick overview of LSA Types / OSPF Router Types!

IPv6: Quick Tips on some good to knows, and need to knows for IPv6 on exam day, may be adding info to this in the future!

I want to briefly touch on the basics of IPv6 in general without any sort of Protocols in the mix, just the basics for now, we'll save that other fun stuff for a later date. This is kind of from the beginning of enabling IPv6 to run on a router to assigning an interface an … Continue reading IPv6: Quick Tips on some good to knows, and need to knows for IPv6 on exam day, may be adding info to this in the future!

IPv6 migration strategies from IPv4 networks, need to know details for exam day explained!

This will be a quick post with NO Topology added this time, so tomorrow I can hopefully jump right into the security section of route starting with ACL's! So I will list off the terminology for methods, the up and downs of using them, and how they stack up against other methods. One important thing … Continue reading IPv6 migration strategies from IPv4 networks, need to know details for exam day explained!

RIP for IPv6 (RIPng) configurations, explanations, and plenty of examples!

I will be recycling the last labs Topology for this and one final OSPFv3 headache, and then IPv6 is done for now (though I am sure I will recover the topics at some point). So as can be seen kind of above, it's a weird sort of RIP boundary to not block the IPv6 addresses … Continue reading RIP for IPv6 (RIPng) configurations, explanations, and plenty of examples!

Configuration of EIGRP in IPv6, output examples and differences from v4, and some old IOS code derps!

I sometimes wonder how much it makes network engineers cringe when they look at a blog post (if any engineers do), and see my barely put together Topology not made in Visio as my diagram 🙂 Anyways this should be pretty quick, so far I have only configured the loopback and FastEthernet0/0 interfaces for the … Continue reading Configuration of EIGRP in IPv6, output examples and differences from v4, and some old IOS code derps!

Part 4: Found an IOS bug on R5, and found why IPv6 doesn’t work over my NBMA, so I won’t be able to lab it :(

I'm thinking it has to be something on that frame switch so we'll dig into the guts of that, but I start off with R5 (not in this Topology in which you will see why), just to get SOMETHING going for R1. As you may not know from previous labs, R5 is attached to R1 … Continue reading Part 4: Found an IOS bug on R5, and found why IPv6 doesn’t work over my NBMA, so I won’t be able to lab it 😦

Part 3: Fixing the “ATTEMPT/DROTHER” issue, but still failing at the end

So through begging all over on Cisco support community and other tech forums, someone had pointed out that my running config appears to be missing the frame map statements, and I just facepalmed so hard I might have just smacked myself. Once more, if you use templates that setup "base configs" like ip addressing and … Continue reading Part 3: Fixing the “ATTEMPT/DROTHER” issue, but still failing at the end

Part 2: IPv6 / OSPFv3 configuration on Hub in NBMA, Hub stuck with neighbors in “ATTEMPT/DROTHER” state

So now we have R1 left to add to our OSPFv3 Circus, so lets get to work configuring. A couple thing to mention, that OSPFv3 still needs neighbor statements, but I don't quite remember where its config'd or what the syntax is so lets gets started: R1#conf t Enter configuration commands, one per line.  End … Continue reading Part 2: IPv6 / OSPFv3 configuration on Hub in NBMA, Hub stuck with neighbors in “ATTEMPT/DROTHER” state

OSPFv3 PtP networks, adding IPv6 addressing on interfaces, and more IPv6 info / configs in general (good stuff)

So this video I am working on now is regarding point-to-point networks, which I didn't think that if I were going from 2-3 with the SW1 between then it would be an "Ethernet segment" however R3 and R4 are directly connected via Fa0/1 so that would be a point-to-point so I may be re-covering the … Continue reading OSPFv3 PtP networks, adding IPv6 addressing on interfaces, and more IPv6 info / configs in general (good stuff)

Hex to Dotted Decimal to Binary conversion explained, and other good info to know for exam day about Hex!

Above is a Hex Conversion Template from an INE video I am watching on conversion, and I really dig the design to full explain it so I am using the same template and wanted to cite INE as the creator of the design (I think?) and for the information on conversion. It is actually used … Continue reading Hex to Dotted Decimal to Binary conversion explained, and other good info to know for exam day about Hex!

IPv6 / OSPFv3 configuration and explanation along the way!

As illustrated above, OSPFv3 (OSPF for IPv6) and OSPFv2 (OSPF for IPv4) can co-exist in harmony on one router, as two completely separate processes, without interfering with each others operation (just like our recent VRF discussion). Being that OSPFv3 is configured on an interface by interface basis, it does not use network statements in router-config … Continue reading IPv6 / OSPFv3 configuration and explanation along the way!

IPv6: Address types, Prefix-types you must know, Auto-Configuration

I am going to run through all the as brief as possible, so hold onto the seat of your pants. First up, EUI64: Every interface enabled with IPv6 on a Router needs a unique identifier, called an interface identifier, which uses what is called an EUI64 (Extended Unique Identifier). The 64 bits does not refer … Continue reading IPv6: Address types, Prefix-types you must know, Auto-Configuration