SD-WAN offers many advantages over MPLS. We discuss why SD-WAN should be at the core of your network and how you can make the transition to SD-WAN. Feel free to reach out for a conversation...smurphy(at)myarg(dot)com.
Short story, I had an exam for a new job which was basically all around the SD-WAN principles and applications, benefits, etc. I had a week off to study and I tried to find the best videos I could on RU-vid as SDWAN was not really around when I was in uni years ago. I ended up finding your videos Steve and I watched the different parts maybe 10times, and I must say after watching couple other RU-vidrs that yours were the most well, easily explained and also detailed. I said to myself, well if I do pass this exam, I am defenitly coming back here to thank you and ofc I did get the job. I am now starting a new adventure after 5 years in a NOC, to move on into a more specialized area where I will be proposing buisness network solutions to our customers. thanks again and sorry for my english it is not my main language
Thank you so much for this video Steve. If I'm able to prepare the contract my client has requested is because your video allows me to understand their business. You are a great teacher.
Very Clear explanation. It's not easy for a lot of technical engineers to expose all the benefits in a High Level approach to the Business Management team. This video helped me a lot. thanks Steve.
A software-defined wide area network is a wide area network that uses software-defined network technology, such as communicating over the Internet using overlay tunnels which are encrypted when destined for internal organization locations
Yes. There are a host of orchestration tools, bandwidth optimization and application performance services, plus direct access to the cloud, rather than a centralized access hub.
@@stevemurphy2347 direct access to the cloud? What do you mean - who's cloud? we are going to building our cloud using these. If I have an app, say webmail interface on Apache https server, what improvement will these bring to it more than a MP VPN? I mean exactly what, because I read about vague promises about some black box performance optimization w/o explanation what and how. VPN provides compression and tcp/ip have TOS/QoS support. What is still left?
@@angelg3986 Nothing. That's the point. Its only a benefit if you are running 80% of your workload in other people's cloud infrastructure e,g, Azure, AWS etc. If you are hosting in datacenter, it has zero benefit.
I'm looking to build a PC that can tackle some SD-WAN labs virtualy (Eve-ng and such). What hardware specs would you recommend, particularly RAM and CPU?
Hello William, many SDWAN platforms support universal hardware. I can't provide those specs, though. You should be able to get them from whichever SDWAN platform provider you are considering. Best, Steve
Great video..Is it possible to do a video that compares Vendors SDWAN solution and their benefits and weaknesses like Cisco, Juniper, Palo Alto, Fortinet, Huawei, VMware etc.
Hello, Thanks for the recommendation. I can't do that directly in these videos. First, it would not be fair to the SD-WAN providers. The providers have differences, and labeling them strengths or weaknesses may not be entirely accurate. Second, that might be considered proprietary information by my employer. If you want to understand the differences between providers because you are considering purchasing a solution, please get in contact with me. We can have our product team assist you with that understanding. There is no charge for our consulting, so it will not cost you anything to engage us. All the best. Steve
I am seeing ISPs decommission their ATM and MPLS networks in favor of SD-WAN. There are a few SD-WAN providers that sell QoS-enabled transport service in the middle-mile as an extra value add. They are maintaining MPLS networks to support their product offering.
Helo sir, sir can you please tell me. What are the basic difference between sdwan and currently using network techniques. Why peoples will choose sdwan technology, when we have already network techniques . Basically I wanna to know benefits of sdwan so that we replaced traditional techniques. 🙏
Well, I did my best in the video. For a deeper evaluation, I'd refer you to an SD-WAN provider that can discuss your particular circumstances. Best, Steve
HI sir, I thought SD WAN is just like wan optimization device, but as per you it can replace MPLS, does it mean VPN is not required in future and internet is enough?
Hello! SD WAN is designed to replace MPLS in most use cases. SD WAN is a VPN-based technology that uses the public internet. The biggest objection to SD WAN versus MPLS is the lack of finite quality of service commitments. Most organizations can use the public internet, even without guarantees around loss, latency and jitter. If you do need quality of service, there are some SD WAN service providers that have a middle-mile private network that can give you the MPLS experience. Best, Steve
@@stevemurphy2347 in which way will the upgrades on ISP's infrastructure be beneficial to SD-WAN sollution? Are there any teams working on 5G optimisation?
@@stevemurphy2347 That has been seen as a biggest challenge with SDWAN where it cannot guarantee the performance compared to MPLS as service provider (ISP) does not promise that but you mentioned some middle mile private network which can give that MPLS experience. Could you elaborate more about that please.
How can SD-WAN provide guarantee latency like what MPLS line can? Since SD-WAN is using your existing leased lines, doesn't the latency tie to what leased line the SD-WAN is using? For example, SD-WAN cannot improve an existing leased line's high latency connection to India branch office.
Thanks for your comment. SD-WAN cannot fix the middle mile. But when using multiple network connections, SD-WAN can dynamically pick the lowest latency path. If you have applications that require low latency, SD-WAN can support an MPLS or point to point network and optimize your application performance while minimizing the spend on the low-latency network. Lastly, several SD-WAN providers have constructed private middle-mile networks to accelerate traffic over longer distances. With a private middle mile, you have a non-QOS hop-on (usually under 15ms) and then MPLS-like QOS to your destination. If your destination is not a cloud service, then you'd have a non-QOS hop-off as well. Does that answer your question?
@@stevemurphy2347 Hi Steve, so my understanding so far is the SD-WAN options like Cisco DNA Center are basically an intuitive overlay network that chooses the best routes but uses existing infrastructure like Metro Ethernet, but isn't MPLS really just another form of underlay network itself? Why are so many people saying it is going to "replace" MPLS rather than work on top of it?
@@tango12341234 SD-WAN will work with MPLS. The MPLS replacement conversation centers around cost savings and the private backbone SD-WAN providers supplementing the traffic quality with an MPLS-like experience.
12:23 what do you mean SD-WAN will test each network? if you only have internet you can't control the flow of your data on the public internet, hoping you can clarify, thank you.
SD-WAN, can evaluate the relative performance of various paths. You are correct, it cannot control them, but it can assess them - especially if SD-WAN is on the far end.
my English is not good, and i feel hard to learn SD-WAN. i have watched your video many times but i still don't get the point. i still don't get what is SD-WAN. can you please write them in here for me ?
Hello and thank you for your question. The basic reason we use SD-WAN, versus other wide area networking technologies such as MPLS or VPN is that SD-WAN is intelligent in manipulating the applications placed on the network and improves the performance of the applications on the network. It improves user experience for mission critical applications in the data center and in the cloud. I hope that helps. Best, Steve
thanks Steve, here i would like to add, Still SD WAN use MPLS underlay technology , only the commercial sold terminology MPLS VPN is not used and replaced by SD WAN , Still 98% of Service provider Backhaul uses IP/MPLS (unless rest 2% shifted on Segment Routing independent of MPLS ) .
I agree. But do you think is there any other option for the underlay today besides the ubiquitous IP/MPLS? I think even segment routing is using IP, although it's not really called the underlay.
Yes, Most of the new providers have implemented IP. The larger providers that have the global MPLS networks are still leveraging those. The the end-user, it really makes no difference.
SD-WAN has a similar function in prioritizing traffic. It's class of service (CoS) at the edge. Because SD-WAN normally uses the internet, CoS is not applied in transit. Optimal route selection helps, but there are no guarantees. If transit QoS is required, using an SD-WAN provider that has a private backbone can solve for that. Thanks for leaving a comment! Best, Steve
Hello Angel, SD-WAN is software defined, but most SD-WAN providers come from an edge appliance background, so they have built their software into their edge appliance strategy. Since much of the application routing and prioritization decision making includes the access available at a location, traffic direction at the edge is desired. White box options are available from some providers. Other have just a small/light appliance that does route selectin and encryption and all the processing is in the cloud. Hope that helps. Please let me know if you need assistance. Best, Steve
It’s not replacing MPLS MPLS is an underlay. Internet is overlay. If you need to meet compliance. You may need to keep MPLS. If you need inbound load balancing there is 1 choice.
Great Video Steve , thank you very much !!! What do you think about SD-WAN solution offered by Versa Network ? Can become an standard like the one provided by Cisco ?
Thanks for your question. Both are very mature platforms. Cisco (formerly Viptela) has the advantage of increasingly strong integration with the broader Cisco stack. Versa, I believe, will struggle to keep up in the development cycle and be a player in the SASE space. Versa has focused its distribution model on service providers. This may hurt them as service providers may not push them as hard to develop additional capabilities - they are further removed from the voice of the customer than other solutions. Best, Steve
