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CISCO CCIE EXAM You must know about SD -WAN...(2)
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Third, we need to overcome some common misunderstandings and concerns about SD-WAN.
Too complicated
Network engineers who shun SD-WAN adoption because they seem to think that this technology will require them to learn some complex new programming languages.SD-WAN does not require you to learn some mysterious new programming languages. Cisco ccie .Because the SD-WAN sits on top of multiple WAN links and uses software-driven policies to automatically choose the best data transfer mechanism for each application, it masks complexity.exam
With SD-WAN, you can see the entire network. You are feeling it and seeing how it moves the connection.D-WAN keeps you ahead of the curve and you can keep up with service level agreements throughout your office. It will alleviate the huge burden on you.
too expensive
SD-WAN can be used as a SaaS, which is relatively inexpensive compared to custom DIY settings. Before you adopt it, you need to sit down and ask yourself: Can my team use a custom model to do this on its own, or can our business sign a service plan?
The SD-WAN firewall helps ensure that IT administrators gain the security and ability to identify thousands of applications on the network.cisco ccie exam.It simplifies the process of defining configurations and policies for everyone, giving IT administrators the control they need to get the job done.
A simple buy is a common obstacle because it is an upfront cost. The sooner you adopt it, the better you can master things and the more value you can bring to your business.
This is a killer
SD-WAN is designed to automate decision making and centralize operations while reducing errors.
The adoption of SD-WAN is inevitable, but it requires a change in mindset. Some engineers may have to take their work to the next level, but we still need to work for people who can design and implement the network. We still need someone who can use the software.
Fundamentally, this progress is just another advance in a series of technological leap. SD-WAN software doesn't do anything behind you, you still have control.
SD-WAN is just one of the tools you should consider.
Fourth, IT organizations need to consider the basic factors to consider when adopting or expanding SD-WAN
1.Save money
The economics of SD-WAN are reflected in avoiding expensive WAN link costs and increasing bandwidth efficiency. Since the average annual growth rate of WAN data is 20%, most organizations need more bandwidth to achieve high-speed communication to remote offices.cisco ccie exam.SD-WAN supports secure deployment of Internet links DSL, cable, Ethernet, wireless and other internet links, or in combination with expensive MPLS connections, and can replace expensive MPLS connections.On average, the internet connection provides 2 to 5 times the bandwidth of the same price MPLS connection, directly contributing to the return on investment of SD-WAN devices.
2. Improve reliability
SD-WAN allows traffic to pass through two or more separate WAN links. As a result, IT organizations can diversify their WAN connections by contracting with multiple communications service providers to ensure a more reliable connection to their remote offices.
3. Traffic identification and prioritization
Most organizations are rapidly moving from a hub-and-spoke WAN connection where all traffic is passed back to the central data center towards a direct point-to-point connection between the remote office and the cloud or SaaS application portal.SD-WAN enables IT organizations to set up applications and user-driven policies for priority and security. Cisco ccie exam.The SD-WAN recognizes the type of traffic going in and out of the branch and routes it directly to the correct data center.
4. SD-WAN support cloudy
Most IT organizations mix internal data centers, applications in the public cloud, and users accessing SaaS applications. SD-WAN solutions are able to identify and route cloud-based traffic.SD-WAN vendors have partnered with leading IaaS providers to accelerate communication between local sites. The SD-WAN solution identifies the IP addresses of most leading SaaS providers and routes traffic accordingly.
5. Management, Automation and Network Orchestration (MANO)
For most SD-WAN solutions, the intelligence of management, orchestration, and automation resides in a centralized data center or cloud.The management, automation, and network orchestration (MANO) consoles of centralized IT operators should be highly automated, but this often requires some learning process.SD-WAN MANO also faces some challenges to integrate into existing network and application management systems, but this is necessary for fully automated application performance management.
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CISCO CCIE EXAM You must know about SD -WAN...(2)
Ccie certification cost A minute to learn about the misunderstanding of SD-WAN
Ccie certification cost A minute to learn about the misunderstanding of SD-WAN
Before we talk about the misunderstanding of SD-WAN, let's take a brief look at what SD-WAN is. SD-WAN, a wide-area software-defined network, is a service formed by applying SDN technology to a wide-area network scenario. Ccie certification cost .This service is used to connect enterprise networks, data centers, Internet applications, and cloud services across a wide geographic area.It is designed to help users reduce their wide area network (WAN) expenses and increase network connectivity flexibility. SD-WAN is more than just a buzzword, it is already bringing benefits to early adopters.Ccie certification cost .The first word about SD-WAN appeared in the public view was published in network computing in September 2014, But in fact, the concept of SD-WAN comes from the earlier emergence of Hybrid WAN, which is to solve the game problem like unstable Internet interconnection in the enterprise market and expensive MPLS VPN.At the same time, in the ONUG Open Network User Forum in 2014, many enterprise users unanimously proposed such application requirements. "SD-WAN is a service that is used to apply SDN technology to a wide area network scenario. Ccie certification cost .This service is used to connect a wide range of enterprise networks, including branch offices and data centers."Although in many consulting reports or vendor solutions, SD-WAN is often limited to the networking scenarios where enterprise branch offices are interconnected.However, based on the definition of SD-WAN, the application scenarios of SD-WAN can be summarized into three categories: enterprise interconnection, data center interconnection and cloud interconnection scenarios. But we still have a lot of misunderstandings about SD-WAN, let's take a look:
1. SD-WAN will replace MPLS: For the time being, MPLS still occupies a prominent position in the market, but SD-WAN has also eroded a part of the city. In an application, MPLS and Virtual WAN are usually deployed together. The most important scenario is still hybrid networking.For high-priority traffic of enterprise users, the MPLS network connection is still used, and the traffic of the backbone network is controlled by Traffic Engineering to ensure the network quality of data transmission;Ccie certification cost .Some branch offices and remote users, choosing to use the SD-WAN Internet connection, can reduce cost and flexible creation. SD-WAN can reduce the company's reliance on MPLS, but it cannot be eliminated. 2. The only benefit of SD-WAN compared to MPLS is the cost: SD-WAN can be used as a SaaS, which is relatively inexpensive compared to custom DIY settings. The plug-and-play concept of edge devices and the point-and-click configuration of services are huge advantages.Ccie certification cost .Compared to MPLS, everything is centralized, GUI-based, and easier to work with.Overall, SD-WAN can save 30% of the cost per year compared to MPLS in the same proportion of bandwidth. SD-WAN is not only cheap, it is easier to manage, operate and maintain. 3. SD-WAN can guarantee QoS: This is only a misunderstanding caused by vendor marketing, SD-WAN can measure and compensate for packet loss, jitter and latency.The loss of packets can be compensated for by using techniques such as forward error correction. Compensation for delays from distance is not possible for the same path.Jitter can be compensated for by using buffers, but this can create delays and can disrupt QoS for real-time applications such as voice and video.Therefore, SD-WAN can detect and measure delay, packet jitter and loss.Ccie certification cost .It compensates for packet loss, but it cannot be used for jitter and latency. It can switch the best path in the available path, and if all the paths are not good, QoS is not guaranteed. 4. Think of SD-WAN as an independent solution: D-WAN technology needs to follow the same strict security standards as other IT infrastructure elements. In particular, pay special attention to the use of branch routers in the SD-WAN process.Ccie certification cost .Although for traditional branch router deployments, it may not be necessary to check the hardware device once it is installed, but this does not apply to SD-WAN routers. Because for SD-WAN routers, it is important to use the latest security patches to ensure device firmware updates.ccie certification cost.Even with some SD-WAN routers with intelligent auto-repair, you can't change the fact that you need to change the security configuration at any time according to the application environment. SD-WAN is a very good technology and has great prospects, but if we only look at it from marketing, it will be a lot misleading. Publisher:IE LAB publish Website: http://ielab.network WhatsApp: +8617782638871 Skype:live:ielab.anna
Hello all I have a few of these Cisco Catalyst 3560 8 ports compact switches and 24 and 48 ports left. Anyone want them let know. Also have a few Cisco Catalyst 3750x 24 ports switches. I need them gone.
They all have the latest iOS software. The 3560 are used/refurbished. The 3750x never had a config on them. I kelp updated to the iOS software.
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