Ever wonder how the massive organizations we rely on protect their entire digital kingdom from the bad guys? It all comes down to one crucial device: the firewall. It’s the unsung hero, the digital bouncer, and the grumpy gatekeeper all rolled into one. Think of it this way: to get into your home, a visitor […]
Stop That Fire! What Exactly is a Firewall and Why Your Network Needs One Read More »
Alright, here we are for part three of the EVPN Lab – BGP Configuration. In our last configuration post EVPN Lab – Multicast Configuration we setup multicast in the underlay. Now we get to configure BGP so when we get to the next video and we are setting up VXLAN and EVPN, we don’t have
EVPN Lab – BGP Configuration Read More »
Here we are! The official start of the long awaited EVPN Lab series! We are going to start out the EVPN Lab with OSPF Configuration. If you are having some doubts on your OSPF skills, you can head over to OSPF Basics for a quick refresher! What are we going to configure in this lab:
EVPN Lab – OSPF Configuration Read More »
Let’s take a trip down memory lane. I last learned about OSPF basics when studying for my ICND 2 exam in 2008. How do I know and or remember this? Well, 1, it was when I earned my CCNA, my first-ever associate Cisco certification. The more plausible answer is that I kept all my notes
When I say OSPF route filtering, I know what some of you think: “Mike, did you bang your head on something? LSDBs have to be consistent across the entire area for OSPF to calculate SPF properly, so how can you filter routes?” There are three ways to filter routes in OSPF, they are: Each of
OSPF Route Filtering Read More »
A few days ago, I passed DCUFD and earned my Cisco Certified Network Professional in Data Center! The test had some issues with it, but I think it was a fair certification to gauge if someone has been around Cisco’s Data Center product line. As with all tests, there are a few gotchas, but I
CCNP Data Center Complete, but What’s Next? Read More »
Fellow Cisco people, I am back! After a long hiatus, I have decided to stop paying my hosting provider tons of money to keep a blog with a few posts. I never stopped to think that SNMP was a topic people would have an issue with. SNMP versions 1 and 2c are easy to configure;
The Wonderful World of SNMP Read More »
.I came across a new topic while studying for DCUFI. The topic I was most excited to read about is Unified Fabric! I am going to share some of what I learned in this post. Unified Fabric is a term that aims to reduce cabling in the data center. When you provision a new server
Unified Fabric, What is it? Read More »
I am fortunate enough to be a part of a great group called NYC Networkers. I have been asked to come up with relevant topics in the networking area and teach them to members of the group who RSVP to the meetup. Last Sunday, I did a meetup on “Basic LoadBalancing Principals,” and a decent-sized
Basic TCP Load Distribution with NAT Read More »
Just over five months ago, I was sitting in building three on the RTP Cisco campus. I was on my 4th CCIE Route/Switch lab attempt today, passing 640-916 and achieving Cisco’s associate certification in data center. In my honest opinion, the tests were good. 640-911, I feel, was the tougher of the two, just because
CCNA Data Center Passed Read More »