I have a confession to make - While studying MPLS I largely overlooked the configuration of the Provider Edge because of its complexity and ease of breaking all routing (and probably reversing time). I intentionally used my MPLS Lab for ENARSI 300-410 study with new IP Schemes / CE Protocols to challenge my knowledge of … Continue reading MPLS – A necessary closer look at the PE Router settings (VRF / BGP / VPN / Address Family) to see how to setup for new lab!
While both AToM and EoM are Point-to-Point Layer 2 MPLS Protocols, and L2TP is NOT related to MPLS (but a Layer 2 Tunneling Protocol all the same), VPLS is meant to be a Point-to-Multipoint or Multipoint-to-Multipoint Protocol to extend L2 across the MPLS. Some Terminology and random points on VPLS TLS - In VPLS terms … Continue reading MPLS – VPLS (Virtual Private LAN Service) review, another Layer 2 Cloud Transport solution, details inside!
I've added a couple of Routers to my current MPLS Lab, as the concept to my understanding is that with minor configuration on the PE / CE devices, it should just use the MPLS Network for Transport and that will be that! I have no training material or instructor led training on this, so this … Continue reading MPLS – EoM (Ethernet over MPLS) deeper review, attempted configuration, never worked with it before but lets give it a go!
So this is getting pretty out of bounds of what I know / have worked with at all, however I wanted to make a quick note on these technologies so I have reference to them, those two being AToM (Anything over MPLS) and EoM (Ethernet over MPLS). From my understanding AToM is for more dated … Continue reading MPLS – AToM (Any Transport of MPLS) and EoM (Ethernet over MPLS) overview, very high level review of technology, some configuration examples as well!
After giving this some thought, I really can't in good conscience cap off an MPLS Fundamentals sessions without dipping our toes into the intermediate waters of "Route Leaking" with MPLS, as a Network Engineer you will some day run into two companies under the same Umbrella with two different MPLS rings that need to leak … Continue reading MPLS – Route Leaking Lab, as well as “Extranet” configuration to allow two separate MPLS Customer subnets to chat!
Above is a graphic of my own Meraki stack at my home, however this will only be reviewed in discussion of network "Planes" before we close out MPLS discussion 🙂 In this final MPLS post I wanted to first get a very clear understanding of Management Plane vs Control Plane vs Data Plane, then take … Continue reading MPLS – Detailed look at “Planes” in the network, MPLS L3 VPN traffic flow reviewed through Wireshark, and how Import / Export VRF functions work!
Above is the full scope of the Topology that will be configured by the end of this, utilizing all different protocols for CE to PE, mainly to demonstrate it flexibility with accepting IGPs for all walk of life which is what this blog is all about 🙂 NOW, I had went ahead and used Keith … Continue reading MPLS – Now to apply the Network Ninja troubleshooting to get these CE Routers talking across the MPLS Network!
I will be primarily looking at this through the lens of R3 to R4 when reviewing the below material, this is very heavy into MPLS verification commands / debug output / WireShark capture screen snips, so this will not be for anyone looking for a light read. I was planning on fitting LDP and … Continue reading MPLS – LDP Session Initialization, Active / Passive LDP Neighbors, Verification Commands for LDP, and lots more LDP!
Will be doing a very simple IGP setup using OSPFv2, MPLS, and doing some verification commands to demonstrate different ways to verify MPLS Bindings / LDP in action / Labels through the LSP (Label Switched Path). However first upon booting up my lab I saw my Layer 3 VPN tunnel throw a console message, so … Continue reading MPLS – Layer 3 VPN configuration review on PE Routers, configuration of Provider Routers, and verification commands!
A very brief introduction to MPLS, and the benefits it provides to customers MPLS is the realization from its predecessors ATM and Frame-Relay that a more efficient, lower cost, and higher speed WAN packet switching solution was needed in the late 90's which gave way to the IETF coming up with MPLS. For all … Continue reading MPLS – A brief introduction, and a technical overview of MPLS Mechanisms and Terminology visually demonstrated!
Have a few more deep dive sort of Material / Review for EIGRP, and one of them I wanted to be clear on for the exam and out in the wild, is how EIGRP forms relationships over the WAN and why it's important to know what type of WAN is connecting the neighbors. EIGRP over … Continue reading EIGRP: How EIGRP forms relationships over different types of WAN’s (We are getting close to done with EIGRP review)!