I was recently managing an Exchange migration for a company and had an interesting problem. On the surface it appeared I was over the hump and close to completion so everything seemed spot on. However, on the home stretch I started seeing applications issues. I chalked it up to Read more…
It is very important that you install VMware Tools in the guest operating system. With the VMware Tools installed VMs support significantly faster performance, time synchronization, and other enhanced features. Below are the steps to install the VMware Tools on Debian 1. Install the prerequisites into your Debian OS. If Read more…
What is route summarization and why to use it? In large internetworks, hundreds, or even thousands, of network addresses can exist. It is often problematic for routers to maintain this volume of routes in their routing tables. Route summarization (also called route aggregation or supernetting) can reduce the number of Read more…
What is OSPF load balancing and why to use it? Load balancing is a standard functionality of the Cisco IOS router software, and is available across all router platforms. It is inherent to the forwarding process in the router and is automatically activated if the routing table has multiple paths Read more…
What is route redistribution and why to use it? Route redistribution is the process of sharing routes from one routing protocol and distribute them into another. By default, routers only advertise and share routes with other routers running the same protocol. As such if one router is configured for OSPF Read more…
What is EIGRP and why to use it? Enhanced Interior Gateway Routing Protocol (EIGRP) is an advanced distance-vector routing protocol that is used to share routes with other routers within the same autonomous system (AS number). Unlike other routing protocols EIGRP was designed by Cisco Systems as a proprietary protocol, Read more…
What is route redistribution and why to use it? Route redistribution is the process of sharing routes from one routing protocol and distribute them into another. By default, routers only advertise and share routes with other routers running the same protocol. As such if one router is configured for OSPF Read more…
What is a DHCP Server and why to use one? The Dynamic Host Configuration Protocol (DHCP) is a standardized network protocol used on Internet Protocol (IP) networks. The DHCP is controlled by a DHCP server that dynamically distributes network configuration parameters, such as IP addresses, for interfaces and services. A Read more…
What is a default route and why to use them? Default routes are used to direct packets addressed to networks not explicitly listed in the routing table. Default routes are invaluable in topologies where learning all the more specific networks is not desirable, as in case of stub networks, or Read more…
What is telnet and SSH and why to use them? SSH is a network protocol used to remotely access and manage Cisco devices. The key difference between Telnet and SSH is that SSH uses encryption, which means that all data transmitted over a network is secure from eavesdropping. The opposite Read more…