ICMP or Internet Control Message Protocol is one of the most important network protocols in TCP/IP protocol suite. The Internet Protocol is not designed to be absolutely reliable. As such, ICMP is designed to be used by networked computers‘ operating systems to send error messages to show that a requested service is not available or [...]
In an Ethernet network, every client, server and network device is wired to a hub or switch. However, what is the different between hub and switch?
In a word: intelligence. Answer this in short sentence: Hub versus Switch - Shared versus dedicated channels!
Technically hubs operate at the layer one (Physical Layer) of the OSI model. [...]
syslog is a client/server protocol standard uses for forwarding log messages in an IP network. It is typically used for computer system management and security auditing.
Most Cisco devices can use the syslog protocol to manage system logs and alerts.
However Cisco devices does not have large internal storage space for storing its logs. There are [...]
After connecting a switch to your network, it will be useful if the network administrator can login remotely into it to do troubleshooting, check logging and so on.
The easiest way to manage your switch remotely over the network is to configure an IP address for the default VLAN.
interface Vlan1
ip address 10.2.6.85 255.255.255.0
ip default-gateway 10.1.1.1
Sometime you may like to limit only certain IP address to access your Cisco router / switch by using telnet. You may implement it by configuring the access list and apply it to the line vty 0 4 line.
There are two modes of operation in Windows 2003 environment. Basically a computer can work as workgroup computer or domain computer. Most home and small business environments will be Workgroup, and most enterprise businesses will run in domain mode.
Basically when you install Windows 2003 server, by default it is a workgroup computer. Workgroup environment is [...]
This is a quick fix to vmware network virtualization.
Sometime while using vmware, your guest virtual machine may face the problem with network connectivity. I have this problem with two of my virtual machines the other day. Only one of the virtual machines is able to connect to the network. (By the way, both are created [...]
In my previous post on Static route configuration, I have touched on some basic of static route configuration. In this post, I will show you more details on how to configure static routing in Cisco devices.
IP routing is enabled on Cisco routers by default. If it has been previously disabled on your router, you can [...]
It is good to have CCNA credential if you would like to work as a network engineer. It shows that you have the basic foundation in the area of networking especially in the field of Cisco networking. Frankly, it would be easier when you are marketing yourself for a new IT job if you have [...]
It is important to understand the process of routing if you are interested in learning networking. One of the fundamental of this study is static routing. Static routing is not complicated, but it is the basic. We need to understand the basic in order to learn the advanced topics.
Static routing is the process of configuring [...]