Networks are networks. Despite best efforts to keep things going, every day is possible. Here’s a look at some common network problems, some quick fixes, and, best of all, how you can prevent them from happening again.
1. Duplicate IP addresses
When two devices try to share the same IP, you see “Killing Address Already Used” Killing – no access to the network.
Quick fix: The cause of this is usually the DHCP fix for your router. DHCP is probably trying to assign your new device an address at the beginning of your subnet, and another device may already have low-number addresses with static IPs. If you have recently introduced a new device or server on your network, it may have its own DHCP server. Simply disable the DHCP server on that device to reconnect your network.
Blocking Rate: You can take one simple step to avoid IP conflicts by changing the configuration of your router to start assigning DHCP addresses to the upper edge of your subnet, leaving lower addresses available for devices that require static IPs.
Fundamentals of Communication
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Fundamentals of Communication
2. End of IP Addresses
To resolve this issue, use the ipconfig command. If the workspace has given itself an IP address starting at 169.xx, it means that no IP address was found on the DHCP server.
Quick Fix: Some users on the internet cable may not have a local router, where IP addresses are assigned only directly from your ISP. You have almost run out of valid IP addresses from your ISP. The solution to this is to buy either a standalone router or a WiFi pointer with an integrated router. This creates your local pool of internal addresses, making sure you don’t run out.
If you already have a local router with DHCP, the default address pool may be too small for your network. By accessing DHCP settings on the router, you can adjust the address pool size to meet your network needs.
Prohibition rate: It is important that any network connected to the Internet has a local router that works with NAT and DHCP, both for security reasons and to prevent IP address fatigue. The router needs to be the only thing connected to the modem, with all other devices connecting with the router.
3. DNS problems
Errors like The Network Path Could Not Be Found, IP Address Not Found, or DNS Name Missing, can often be traced to a DNS configuration problem. Command line nslookup can be used to quickly display DNS center settings.
Quick Fix: Workstations and other network devices can be configured to use their DNS servers, ignoring the DHCP-provided server. Checking your adapter ‘Internet Protocol Version 4 (TCP / IP)’ settings will show if the wrong DNS server is specified, so select “Receive DNS server address automatically” instead.
Blocking Rate: Your local router may be configured to act as a DNS Server, creating DNS transfers on your ISPs servers. In busy networks, this can greatly overload the power of the router. Change the DHCP settings of your network to have direct access to your DNS servers.
4. One workplace cannot connect to a network
If only one workplace displays the message “No Internet” when opening a web browser, we may assume that the entire network is healthy and pay attention to any specific hardware and software in the system.
Quick Fix: To solve this network problem, start by removing the obvious communication barriers such as bad cable, bad WiFi signal, failed network card or bad drivers. Make sure the workplace network adapter is configured with the appropriate IP, subnet, and DNS servers.