New to CiscoLive? At some point we all were there. The mixture of emotions, of course, is different for everyone. For me? Crazy excitement coupled with a huge dose of adrenalin and fear.
Why? Not only was Networkers 2006 going to be my first time ever going, I was going to be presenting. Read more
IPv6 is #1, #2, and #3 on my technical "to do list" for 2014. This is, for me, the year for IPv6.
Why IPv6 when there are so very many "exciting buzzward acronyms" out there right now? Because it is time. Read more
Studying for a certification and trying to find something of quality online that will help you? Or maybe you are like me and you are just trying to keep up in this fast paced and rapidly changing world of today's IT? Or maybe your department or company (finally) has decided to start looking at and planning for IPv6. Whoever you are. Whatever your reason. If you are in the world of IT and you are looking to keep up, CiscoLive365 is your answer. Read more
“The mediocre teacher tells. The good teacher explains. The superior teacher demonstrates. The great teacher inspires.”
~William Arthur Ward
Shelly is one of those "great teachers that inspire"!! Truth be told I would never have known what a great speaker she is had I not seen the announcement of her as an inductee into the Distinguished Speaker Hall of Fame. She makes the complex seemlingly simple. What an incredible gift she has! I have now watched one of her sessions 2 times already! (More on that later) Read more
I'd like to pass a gift along that my Dad gave me. The gift of the "7Ps". What are the 7Ps and what do they have to do with Router IDs?
The "7 Ps" Read more
"The average teacher explains complexity; the gifted teacher reveals simplicity."
Last week I was at Cisco Live in Orlando and met, yet again, some people that had been taught one must set the TTL to 2 for two directly connected routers to be able to eBGP peer between their loopbacks because the TTL "gets decremented on the way to the loopback." The web, ya gotta love it. When I try to help someone deprogram this brain washing, I find pictures help. So for those who'd like to get deprogrammed, it's time to play!
Let's accept reality. A network is so much more than just the sum of its electronic parts, operating systems, and configurations. It is an extension of the past and the present of our company. Much like the growth rings of a tree, we can look at our company's network and see all the human history of our company. Read more
Recently, I’ve done a few labs with OTV in them. Each time, however, I had an OTV SME (subject matter expert) in the lab with me. They configured it and it just “worked magically." No hiccups. No gotchas. Read more
Mark your calendars! February 12th. That is when the CiscoLive Orlando session catalog goes live. And I have to say I’m stoked!! I’m stoked for you, and I’m stoked for me.
It all started a little over two years ago. I was doing my usual "Cisco Lab Rat" type job and had some customers in the room. There was a concept I was trying to explain so I did a quick sniffer capture and then used Wireshark to help me show what was actually happening "on the wire" between the two routers. Armed with my sniffer trace and the concept that "a picture is worth a thousand words," I called them over. Read more
Put your detective hat on your head and your Network Operational Investigator badge on your lapel. It’s time for another entry to the Network Operational Investigating 101 subseries (NOI-101 for short). Today we are going to talk about Network Diagrams. Our "Crime Scene Maps", as it were. And if they are inaccurate… or if they are too complicated to quickly read and understand…. Read more
Put your detective hat on your head and your Network Operational Investigator badge on your lapel. It’s time for a new subseries – Network Operational Investigating 101, NOI-101 for short. This series will focus on the detective work (troubleshooting side) of our jobs as network engineers.
But first… a little fun. Read more
Two weeks ago I taught Routed Fast Convergence and High Availabilty at CiscoLive US in SanDiego. it always surprises me how few hands get raised when I ask how many people know about BFD. With BFD OTV coming out… and BFD MPLS options already available… and support of BFD with NSF/GR on some platforms…. and BFD with SVIs..... I've decided it was time to take my knowledge to the “next level” in preparation. And, I might as well bring y'all along for the fun. This post and my last post are to lay some necessary BFD ground work.
What is Bidirectional Forwarding Detection (BFD)? Why learn about it? Why use it? ..... This article is going to be a "beginning"... an "introduction" into Bidirectional Forwarding Detection. First we will look at what it is and also look at the most "simple" use case for it that I know of. Then we will config it on a 7600 and an Nexus 7K and watch them neighbor up. Read more
First, I have to lead off saying that I LOVE CiscoLive!!
Yes, I work at Cisco...... Yes, I am a speaker at CiscoLive...... Yes, I'm even a Session General Manager for session groups RST (routing and switching) and IPM (multicast). So this might all just sound like me just "drinking the kool-aid" or "marketing" CiscoLive to you. But that is honestly not it.
This is the 2nd post in the 3 part series of "Understanding the BGP Table Version". Please visit http://www.networkworld.com/community/node/80089 to review part 1.
Last we left our network, we had the below 3 routers and a BGP table version of 4 in Router10.
I cannot honestly imagine troubleshooting BGP without understanding the BGP table version. I use it all the time. Sometimes it is just a quick "eyeballing" of it to check to see if all the BGP table versions are in sync.... or if there is work to be done. I see people "eyeballing" the up/down time for a BGP peer when they are troubleshooting. And sometimes I see them quickly eyeball the InQ/OutQ columns. But I rarely ever see anyone using the BGP table version. Read more
Ever since I passed my CCDE, I get emails from random people, some I know and some I don't know. The wording can be different, but the essence of the email is always the same -
"How does one study for the CCDE"? Read more
Denise "Fish" Fishburne works in the Cisco Customer Proof of Concept Lab (CPOC) in Research Triangle Park, NC. In this role, Denise has the unique opportunity of helping customers see their network dreams move from conception to a reality. Denise has been with the CPOC for over 12 years and has been with Cisco 17 years. While she works on many technologies, her primary technical focus is in routing and switching - routing protocols, multicast, MPLS. Being a lab rat, Denise's passion and strength, however, is troubleshooting. Denise loves to share her knowledge and experiences as a CCIE and CCDE with customers, co-workers, and as a regular speaker at CiscoLive.