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Configuring DHCPv6 is an essential part of managing IP addresses on any network. It is the next generation of Dynamic Host Configuration Protocol (DHCP) that enables automatic allocation, configuration and management of IPv6 addresses. In this article, we will discuss how to configure DHCPv6 on Windows Server 2012. Before we can configure DHCPv6, we need to ensure that IPv6 has been enabled on the server. To do this, open the Network Connections panel in the Control Panel and right-click on the adapter that you want to configure. Select Properties and then check the box next to Internet Protocol Version 6 (TCP/IPv6). Click OK. Once IPv6 is enabled, we can begin configuring DHCPv6. Open the DHCP Server console from the Tools menu in Server Manager. Right-click on the IPv6 node and select New Scope. This will open the New IPv6 Scope Wizard. Give the scope a name and description, then click Next. On the next page, you will be prompted to enter the range of IPv6 addresses that you wish to ...

 Implementing DHCPv4 (Dynamic Host Configuration Protocol version 4) is a process of configuring a network so that it can assign IP addresses to devices connected to it. This is done to simplify the process of managing IP addresses on a network. DHCPv4 is a protocol used to provide dynamic IP addressing to clients on a network. It is designed to automatically assign IP addresses to clients on a network without any manual configuration. This process is done through the use of a DHCP server. The DHCP server keeps track of the IP addresses that have been assigned to clients and ensures that they remain unique. In order to implement DHCPv4 on a network, the following steps must be taken: 1. Configure the DHCP Server The first step to implementing DHCPv4 is to configure the DHCP server. The DHCP server must be configured with the IP address range that it is responsible for, as well as other settings such as the lease time and renewal time of IP addresses. The DHCP server must also be co...

EtherChannel is a technology used to increase the bandwidth, performance, and redundancy of a network by combining multiple physical links into a logical link. It allows the use of multiple parallel links between switches or routers, which are aggregated into a single virtual link. This virtual link provides higher bandwidth, faster data transfer rates, and better reliability. EtherChannel is also known as link aggregation, channel bonding, or NIC teaming. The technology is supported by most network devices, including routers, switches, and servers. EtherChannel is a technology developed by Cisco Systems which enables the aggregation of multiple physical Ethernet links into a single logical link for the purpose of increasing bandwidth and providing redundancy. It is a Layer 2 link aggregation technology, which combines multiple physical links into a single logical link. This allows for increased bandwidth and improved network availability. The most common implementation of EtherChannel...

 Inter-VLAN routing is a process that allows for communication between different Virtual Local Area Networks (VLANs) within the same physical network. This process is necessary for networks that have multiple VLANs, as it allows for communication between them. Without inter-VLAN routing, the only way for devices on one VLAN to communicate with devices on another VLAN would be via a router. Inter-VLAN routing is implemented using a Layer 3 device such as a router, which acts as a gateway between different VLANs. The router will have multiple physical interfaces, each of which is connected to a different VLAN. The router will then perform the routing function to determine the best path for communication between the different VLANs. In order to configure inter-VLAN routing, the first step is to create the different VLANs. This is usually done with a switch that supports VLANs, such as a Cisco Catalyst switch. On the switch, you will need to create the different VLANs and assign each o...

 Inter-VLAN routing is a process that allows devices on different VLANs to communicate with each other. It is an important part of configuring and managing networks, but it can also be a source of frustration if it is not working correctly. In order to ensure that your inter-VLAN routing is functioning properly, it is important to understand the common causes of issues and to identify ways to troubleshoot them. Common Causes of Inter-VLAN Routing Issues There are a few common causes that can lead to issues with inter-VLAN routing. One of the most common is a misconfigured or incorrectly assigned IP address. If the IP address is assigned to the wrong VLAN or is not in the proper subnet, then it will not be able to communicate with other devices on the network.  Another common cause of inter-VLAN routing issues is incorrect or missing routing protocols. Depending on the size and complexity of the network, different routing protocols may be needed in order to properly route traff...

Objectives: Configure fundamental device settings Configure the router for SSH access in Part 2. Part 3: Configure SSH Access on the Switch Part 4: SSH from the Switch's CLI Context / Scenario Historically, Telnet was the most used protocol for remotely configuring network devices. The information between the client and server is not encrypted when using Telnet. This enables a network sniffer to capture passwords and configuration data. The Secure Shell (SSH) protocol creates a secure terminal emulation connection to a router or other networking device. SSH encrypts all data sent over a network connection and authenticates the distant machine. SSH is quickly overtaking Telnet as the preferred remote login technique for network experts. The most common usage of SSH is to log into a distant device and execute instructions. It may also transmit files via Secure FTP (SFTP) and Secure Copy (SCP) protocols. The connecting network devices must be set to support SSH in order for SSH to ope...

Objectives for the 16.2.6 Lab on Researching Network Security Threats Part 1: Look around the SANS website  Part 2: Recognize recent threats to network security Part 3: Describe a Particular Network Security Threat's History and Situation An administrator must recognise external dangers that endanger the network in order to protect it against assaults. Websites dedicated to security may be used to spot new threats and provide network defence methods. SysAdmin, Audit, Network, Security is one of the most well-known and reliable websites for fighting off threats to computer and network security (SANS). The SANS website offers a variety of services, including the weekly @Risk: The Consensus Security Alert email and a list of the top 20 Critical Security Controls for Effective Cyber Defense. This newsletter describes recent network vulnerabilities and assaults. In this lab, you will find the SANS website, browse it, utilise it to find current network security dangers, investigate addit...

Lab – Observe DNS Resolution (Answers Version) Objectives Part 1: Observe the DNS-to-IP Address Conversion of a URL Part 2: Observe DNS Lookup Utilizing nslookup on a Website Part 3: Observe DNS Lookup Utilizing nslookup with Mail Servers Context / Scenario When you input a Uniform Resource Locator (URL) such as http://www.cisco.com into a web browser, the Domain Name System (DNS) is activated. The first portion of the URL specifies the employed protocol. Hypertext Transfer Protocol (HTTP), Hypertext Transfer Protocol over Secure Socket Layer (HTTPS), and File Transfer Protocol are frequent protocols (FTP).DNS utilises the second portion of the URL, www.cisco.com in this case. DNS converts the domain name (www.cisco.com) to an IP address so that the source host may communicate with the target server. In this lab, you will witness DNS in operation and utilise nslookup (name server lookup) to get further DNS information. Required Assets 1 PC (Windows with internet and command prompt acce...

Objectives Part 1: Network Design and Configuration Part 2: Use the Ping command for basic network testing  Part 3: Using Tracert and Traceroute for Fundamental Network Testing Part 4: Diagnose the Topology Context / Scenario Ping and traceroute are vital tools for evaluating TCP/IP network connections. Ping is a network management tool used to test the connectivity of an IP network device. This application also monitors the round-trip time for messages delivered from the sending host to the receiving machine. Ping is supported by Windows, Unix-like operating systems (OS), and the Cisco Internetwork Operating System (IOS). The traceroute programme is a network diagnostic tool that displays the path or route of IP packets and measures their transit delays. The tracert programme is accessible on Windows, while the traceroute utility is available on Unix-like operating systems and Cisco IOS. In this lab, the ping and traceroute commands are reviewed, and command parameters to alter co...