Skip to main content

SDWAN : Software Defined Wide Area Network | IT NETWORKS


What is SD-WAN?


SD-WAN or Software Defined Wide Area Network (SD-WAN) is a virtual WAN architecture that allows organizations to take advantage of any combination of transport services like MPLS, LTE and broadband Internet - to connect users to applications.

 An SD-WAN uses a centralized control function to drive traffic securely and intelligently over the WAN.

This increases application performance, improving the user experience, increasing business productivity, and reducing IT costs.


computer - no copyright photo
What Problems Does SD-WAN Solve?

1) MPLS cost and constraints



Multiprotocol label switching (MPLS) has been the main used routing technique of WAN connectivity between enterprise sites, it delivers guaranteed bandwidth, predictable latency, and privacy.

Unfortunately it has it’s restrictions

 1.1 Cost

  • MPLS is very expensive and may charge enterprises additional expanses.


 1.2 Constraints

  • MPLS cannot be installed in all geographic locations.
  • MPLS is not a practical means of cloud connectivity in most scenarios.

In contrast, broadband Internet costs much less than MPLS and is available worldwide.

Although Internet connectivity is not as reliable and latency can vary depending on too many factors, the cost savings are convincing.

 >>Many companies are now using a hybrid WAN combination of these transports, in which critical application traffic is sent over MPLS and everything else is routed over Internet.<<


The software-defined WAN makes it easier to deploy a hybrid WAN and to find the balance between cost, performance, and reliability for different applications traffic.

This is largely due to the rule-based management and dynamic path selection capabilities built in SD-WAN.

2) The Management of complex networks


The management that SD-WAN brings is easier compared to classic complex networks operations and is even greater than the cost savings achieved with MPLS.
The configuration of routers, switches and firewalls on an individual basis using scripts and CLIs is inefficient and the percentage of committing errors is big.

Also productivity is reduced further when an engineer have to travel from a place to another to configure a new equipment at a branch site.
The use of obsolete methods and technologies has made it difficult for many network teams to respond to business demands.


  • SD-WAN helps IT administrators in taking control of complex networks operations and respond quickly to changing business needs.

 SD-WAN ease the design phase, deployment, and management of new production equipment from a central location. The work of an engineer is almost complete after the design phase.
In this phase, anyone with NO IT skills acquired can ship the new SD-WAN gateway to remote branch and plug it to production.
The new gateway will be automagically discovered and start showing online with zero-touch provisioning.

 After that, the new SD-WAN equipment will be fully loaded and start functioning using business-aligned policies pre-written by a network engineer.

All the operational rules automatically generate to all SD-WAN devices under management when a policy is added or modified.

SD-WAN Benefits

1) Cost savings

2)Agility

3)Application performance

4)Speed of deployment


Labels:

Comments

Post a Comment

Popular posts from this blog

Automating VLAN Creation on Cisco Devices with Ansible

  Automating VLAN Creation on Cisco Devices with Ansible Ansible is a powerful automation tool that simplifies network management tasks, including creating VLANs on Cisco devices. For beginners, this guide will walk you through automating VLAN creation step-by-step, from setting up Ansible to deploying VLAN configurations. What is a VLAN? A VLAN (Virtual Local Area Network) is a logical group of devices within a network that can communicate as if they were on the same physical network, regardless of their physical location. VLANs improve network efficiency and security by segmenting traffic. Why Use Ansible for VLAN Automation? Consistency: Avoid manual configuration errors. Efficiency: Configure multiple devices in seconds. Scalability: Manage large-scale networks easily. Flexibility: Supports various Cisco devices and integrates with other tools. Prerequisites Cisco Device Configuration: Ensure your Cisco devices support SSH and are configured to allow Ans...
Post a Comment
Read more

30 Linux Commands You Should Know

Linux is a powerful operating system used by developers, system administrators, and tech enthusiasts worldwide. Whether you're new to Linux or brushing up on your skills, here are 30 essential commands every Linux user should know: Start Learning   Linux Fundamentals  For Free 1. ls Lists files and directories in the current directory. ls 2. cd Changes the current directory. cd /path/to/directory 3. pwd Prints the current working directory. pwd 4. touch Creates an empty file. touch filename 5. mkdir Creates a new directory. mkdir new_directory 6. rm Removes files or directories. rm filename Use rm -r for directories. 7. cp Copies files or directories. cp source destination 8. mv Moves or renames files and directories. mv oldname newname 9. cat Displays the contents of a file. cat filename 10. nano Opens a simple text editor. nano filename 11. vim A powerful text editor. vim filename 12. chmod Changes file permissions. chmod 755 filen...
Post a Comment
Read more

20 Linux Commands for Listing Users, Folders, and Processes on Ubuntu and Red Hat

 Linux provides a variety of commands to retrieve information about system users, directories, and processes. This article presents 20 essential Linux commands for listing and managing users, folders, and processes, applicable to both Ubuntu and Red Hat systems. 1. Listing Users cat /etc/passwd Displays a list of all users on the system along with their user IDs, home directories, and shells. getent passwd Fetches user information from the system's databases, useful in environments with LDAP or NIS. who Shows all users currently logged in to the system. w Displays detailed information about logged-in users, including their active processes. users A simple command that lists the currently logged-in users. id [username] Displays user ID (UID), group ID (GID), and group memberships for a specific user. finger [username] Provides information about a user, including their real name, login time, and more. (May require installation: sudo apt install finger...
Post a Comment
Read more