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Showing posts with the label DHCP Snooping

Automating VLAN Creation on Cisco Devices with Ansible

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  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...
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DHCP Snooping

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 Hello, We're gonna talk about DHCP snooping, DHCP SNOOPING is a technology that prevents our local network users or any device that should be asigned an ip address to contact a suspiciours dhcp server, So we need to understand how DHCP process works first, in order to understand how we can protect our local users and their IP attributions. There are four steps through which we need to pass in order to attribute an ip address from our internal dhcp servers or server/ First of all the client sends a DHCP discovery request in the form of a broadcast, then the DHCP server will go ahead and respond to that request with a DHCP offer frame, our client then goes ahead and accepts offer by issuing back a DHCP request for the address that was offered and then the DHCP server will send back an acknowledgment saying yes you can go ahead and use that ip and then it's installed in its database and our user starts to connect in a normal way on our internal network. Example: The problem...
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