Posts Tagged ‘cisco router’

To configure and monitor OSPF (Open Shortest Path First) on a Cisco router, you can use various commands. These commands allow you to enable OSPF, modify OSPF settings for interfaces, view OSPF information, and more. Below is a list of commonly used OSPF commands along with their details: Command Details router ospf 123 Turns on […]

Monitoring and analyzing traffic on Cisco router interfaces is essential for network administrators to ensure optimal performance and troubleshoot any issues. In this article, we will explore various parameters and methods to check incoming and outgoing traffic on Cisco router interfaces. 1. Cisco IOS Command-Line Interface (CLI) The Cisco IOS Command-Line Interface (CLI) provides several […]

Networking certifications are important for a variety of reasons. Some of the main reasons why networking certification is important include: Overall, networking certification is an important investment for professionals who are looking to advance their careers and stay competitive in the job market. It can help individuals gain valuable knowledge and skills, enhance their credibility […]

Rules Cisco routers support two types of ACLs: •Standard ACLs – ACLs only filter at Layer 3 using the source IPv4 address only. •Extended ACLs – ACLs filter at Layer 3 using the source and / or destination IPv4 address. They can also filter at Layer 4 using TCP, UDP ports, and optional protocol type information for […]

Verification Commands Common verification commands include the following: •show ip interface brief •show running-config interface interface-type number •show interfaces •show ip interface •show ip route •ping In each case, replace ip with ipv6 for the IPv6 version of the command. Filter Command Output Filtering commands can be used to display specific sections of output. To enable the filtering command, enter […]

Troubleshoot IPv4 Static and Default Route Configuration Network Changes Networks fail for a number of reasons: •An interface can fail •A service provider drops a connection •Links can become oversaturated •An administrator may enter a wrong configuration. Network administrators are responsible for pinpointing and solving the problem. To efficiently find and solve these issues, it […]

VTY(Virtual Terminal) VTY lines enable remote access using Telnet or SSH to the device. Securing VTY line access: First enter line VTY configuration mode using the line vty 0 15 command in global configuration mode. Next, specify the VTY password using the password password command. Finally, enable VTY access using the login command.