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Netplan DHCP Example: network: version: 2 renderer: networkd ethernets: enp3s0: dhcp4: true Netplan Static Example: network: version: 2 renderer: networkd ethernets: enp3s0: addresses...

Step 1: Get the Docker Host Ready In this first step the host has to be prepared to work with ansible.  In this example, Ubuntu 22.04 is installed on the host with all packages up to date. It is assumed that Ansible is already installed on a controller comp...

Here are a collection of Windows Command Prompt commands for working with an troubleshooting DNS ipconfig /displaydns ipconfig /displaydns Output of DNS Cache Explained Output Description Record Name This is the name that was queried for and...

Network Lab Topology Router0 Configuration Commands Router0>enableRouter0#configure terminalRouter0(config)# interface fastEthernet 0/0Router0(config-if)#ip address 192.168.10.1 255.255.255.0Router0(config-if)#no shutdownRouter0(config-if)#exitRouter0(conf...

Network Topology Router1 Configuration Commands Router1>enableRouter1#configure terminalRouter1(config)# interface fastEthernet 0/0Router1(config-if)#ip address 172.16.1.1 255.255.255.0Router1(config-if)#no shutdownRouter1(config-if)#exitRouter1(config)#se...

Network Topology Router0 Configuration Commands Router0>enableRouter0#configure terminalRouter0(config)# interface fastEthernet 0/1Router0(config-if)#ip address 172.16.1.1 255.255.255.0Router0(config-if)#no shutdownRouter0(config-if)#interface fastEthernet...

Network Topology Router0 Configuration Commands Router0>enableRouter0#configure terminalRouter0(config)# interface fastEthernet 0/0Router0(config-if)#ip address 172.16.1.1 255.255.255.248Router0(config-if)#no shutdownRouter0(config-if)#interface fastEthern...

Network Topology Premise When you have a detailed topology map like the one above it is easy to know what interfaces and what devices you are working with.  However, a topology map like this is often not readily available.  Instead, you are on one end of t...

Network Topology To create this topology, I used GNS3 instead of Cisco Packet Tracer because Packet Tracer routers do not simulate the "ip dns server" command.  In the above network Router0 is being configured as a DNS server.  Through the configuration of ...

Network Topology Router0 Configuration Commands Router0>enableRouter0#configure terminalRouter0(config)#interface fastEthernet 0/0Router0(config-if)#no shutdownRouter0(config-if)#interface fastEthernet 0/0.10Router0(config-subif)#encapsulation dot1q 10Rout...

Network Topology In this network configuration a site-to-site VPN between Router1 and Router2 across the link through Router0. First let's set up the IP and routing information on all three routers as well as the two PCs. Router0 IP and Routing Configurat...

Don't shout at the crops. Don't blames the crops for not growing fast enough. Don't uproot the crops before they have had a chance to grow. Choose the best plants for the soil. Irrigate and fertilize. Remove weeds. Remember ...

Network Topology As of Cisco Packet Tracer 8.2 internal BGP (iBGP) is not supported only external BGP (eBGP) is supported.  If you try and configure iBGP on Packet Tracer, you will see the following message. So, in this example the focus will be on setti...

Microsoft Windows Server Core is the non-GUI version of Windows Server. Because it lacks all the desktop experience extras, Windows Server Core offers several advantages over the full desktop experience version. These advantages include: Greater Stability ...

Network Topology Router0 Configuration Commands Router0>enableRouter0#configure terminalRouter0(config)#interface serial 0/0/0Router0(config-if)#ip address 172.16.1.2 255.255.255.248Router0(config-if)#no shutdownRouter0(config-if)#interface gigabitEthern...

Network Topology Router0 Configuration Commands Router0>enableRouter0#configure terminalRouter0(config)#interface serial 0/0/0Router0(config-if)#ip address 172.16.1.1 255.255.255.248Router0(config-if)#no shutdownRouter0(config-if)#interface gigabitEthernet...

Network Topology Router0 Configuration Commands Router0>enableRouter0#configure terminalRouter0(config)#interface serial 0/0/0Router0(config-if)#ip address 172.16.1.1 255.255.255.248Router0(config-if)#no shutdownRouter0(config-if)#interface gigabitEthernet...

Everyone knows the trick to creating a sequence of number in Microsoft Excel.  Start the sequence and then select it and drag down the column (or rows) creating the sequence of numbers.              However, in the Office 365 version of Microsoft Excel there...

This formula tip will let you fill a column with the letters A to Z. Start by putting the letter A in a cell.  I put the letter A in the cell A1 for the example below.  Then in cell A2 I inserted the formula.  Note I reference the cell A1.  Then I simply copi...

BGP Path Attributes BGP (Border Gateway protocol is a path vector routing protocol, meaning it uses path attributes to determine the best routing path. There are eight (8) attributes that BGP uses in the determination of that best path. Mnemonic First...