Network Automation Push vs Pull
When it comes to network automation, two techniques stand out -- "Push" and "Pull." Whether you are a network engineer, DevOps engineer, or any IT professional who deals with network automation, understanding the differences between the two techniques is vital. So, what is Push and Pull, and which technique is right for you? Let's dive in and find out.
Push and Pull in Network Automation
In network automation, push and pull refer to how the network device configurations are updated. In Push, the configuration changes are pushed from a central device to the target devices. In other words, the changes are initiated and sent to the devices. On the other hand, in Pull, the target devices pull the configuration changes from a central device.
In Push, the central device, usually a server, commands the target devices to apply the given configuration. However, in Pull, the target devices initiate the configuration updates by requesting it from the central device.
Both techniques have their advantages and disadvantages, and the choice between the two depends on the specific network automation needs.
Push vs. Pull: Pros and Cons
Push
Pros
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Push technique allows network administrators to control the timing and order in which the configurations are applied.
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Push eliminates the need for network devices to be configured with the details of where to fetch the new configuration.
Cons
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Push can overload the central device with tasks, especially in large networks.
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Push is not suitable for networks with slow or unreliable communications.
Pull
Pros
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Pull eliminates the need for a centralized device always running since it only comes online when needed.
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Pull is more suitable for distributed networks, where devices are spread out and communicating over slow or unreliable networks.
Cons
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Pull technique results in more complex configurations, particularly when implementing security features.
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Pull configuration updates are not immediately applied, as the devices may take some time to initiate the request, fetch the new configuration and apply it.
Which is Better: Push or Pull?
As discussed, both Push and Pull have their advantages and disadvantages. The choice between the two techniques comes down to a few factors, such as network size, speed, complexity, and cost. In general, push suits centralized networks with high-speed communications and a dedicated central server. Pull is more suitable for distributed networks with slow or unreliable links.
Conclusion
In conclusion, network automation is an essential part of today's modern networks. Choosing between push and pull techniques depends on factors such as network size, speed, complexity, and cost. Having an understanding of Push and Pull techniques helps network administrators and IT professionals make informed decisions about their network automation needs.
So, which technique do you prefer, Push or Pull? Let us know in the comments below.