Tag: Networking 146 posts
This page contains a lot of troubleshooting tips. Use this page to find some free CompTIA Network training videos, or navigate here just to stay informed on certifications and technical advice.
Free Cisco CCNA Training: Introduction to Open Shortest Path First
By Chris Bryant ⋅ July 14, 2008 ⋅ Post a comment
In this video, we will be looking at various different Open Shortest Path First (OSPF) types and will also be configuring the same by configuring and setting up the live equipment. After watching this video, you will be in possession of the knowledge that is necessary to pass the CCNA exam and configure the equipment [...]
Free Cisco CCNA Training: Floating Static Routes
By Chris Bryant ⋅ June 14, 2008 ⋅ Post a comment
Learning how to use and manipulate floating static routes is a critical step in order to become a competent networker and to do well on your CCNA certification exams. This video aims at covering valuable information related to floating static routes. The Method A floating static route is another type of static route, the difference [...]
Free Cisco CCNA Training: RIP Limitations and Timers
By Chris Bryant ⋅ June 14, 2008 ⋅ Post a comment
The main reason why Routing Information Protocol (RIP) is immensely popular is because of its simplicity. However, it is the simplicity of RIP which creates problems while configuring it. Though RIP works perfectly fine in most of cases, at times simple configuration mistakes and omissions leads to complex problems in a network that is difficult [...]
Free Cisco CCNA Training: The Joy of “show ip protocols”
By Chris Bryant ⋅ June 14, 2008 ⋅ Post a comment
To be completely aware of what you wish to accomplish is highly important, whether you are starting a task, or correcting the problems associated with it. In the case of networking, the same theory applies. Proper knowledge regarding how the routers are configured, whether a particular connection is experiencing issues, or a simple check of [...]
Free Cisco CCNA Training: RIP Theory and Version Differences
By Chris Bryant ⋅ June 14, 2008 ⋅ 2 comments
You might already be aware of the fact there are two different classes of routing protocols, namely link-state routing protocol and distance-vector routing protocol. The Routing-Information Protocol (RIP) is a part of the distance-vector routing protocol family, wherein the hop count is employed as the routing metric. The main ideology behind RIP is that in [...]
Free Cisco CCNA Training: Distance Vector Protocol Behavior – Split Horizon and Route Poisoning
By Chris Bryant ⋅ June 14, 2008 ⋅ Post a comment
When someone talks about packet-switched network theory, distance-vector routing protocol certainly encompasses a large portion of the conversation. Being one of the two major classes of routing protocols, in distance-vector routing protocols a router regularly informs its adjoining neighbors of the changes in topology. The other routing protocol, known as link-state protocol, instead exchanges only [...]
Free Cisco CCNA Training: Changing the Administrative Distance of a Static Route
By Chris Bryant ⋅ June 14, 2008 ⋅ Post a comment
When it comes to data communication, the concept of routing holds an important place, and the term “static routing” needs little introduction. This method is based on manually (statically) adding routers to the routing table, and thus configuring the path selection of the topology manually. This type of manual configuration is effective for small networks, [...]
Free Cisco CCNA Training: What is Scalability
By Chris Bryant ⋅ June 14, 2008 ⋅ Post a comment
What is Scalability? Scalability is a term which you would often come across in your CCNA training or in your profession. Now, it may so happen that at that point of time, you may have the expression that it is “just-another-word”. But you should know that it is fairly important, especially when dealing with static [...]
Free Cisco CCNA Training: Default Static Routes Purpose
By Chris Bryant ⋅ June 14, 2008 ⋅ Post a comment
Default static routes are a simpler and cleaner alternative to dynamic routing protocols. With default static routes data can be exchanged with networks which don’t have an entry in the routing table. The routing table can be viewed at any point of time to check out the various types of routes available for use. There [...]
Free Cisco CCNA Training: Static Routing Theory and Configuration
By Chris Bryant ⋅ June 14, 2008 ⋅ Post a comment
The concept of static routing is better understood through an example such as a setup of a hub and spoke network. Three routers namely R1, R2, and R3 can be set up where R1 works as the hub and the other two are spokes. In a hub and spoke network any traffic between the spokes [...]
Free Cisco CCNA Training: Introduction to Static Routing and RIP
By Chris Bryant ⋅ June 14, 2008 ⋅ Post a comment
Static Routing and RIP, or routing information protocol, are covered in both the ICND 1 and ICND 2, both of which need to be cleared if you are going through the two exam paths. These are important topics from the exam point of view and should not be overlooked. Starting with the most basic Static [...]
Free Cisco CCNA Training: Etherchannels
By Chris Bryant ⋅ May 14, 2008 ⋅ Post a comment
In any network, redundancy is good and desirable because of its reliability. However in a connection with several lines, it is a waste of resources to have a limited number of lines trunking while the others lay idle waiting to become active in case one of the lines goes down. In such a case, STP [...]
Free Cisco CCNA Training: Per-VLAN Spanning Tree (PVST)
By Chris Bryant ⋅ May 14, 2008 ⋅ Post a comment
In a network with Ethernet switching running multiple VLANs, spanning trees can be assigned individually to them on a per VLAN basis. PVST, or Per VLAN Spanning Tree, is a version of Spanning Tree Protocol that runs for individual VLANs. It makes sure that despite only one active path for a spanning tree, every VLAN [...]
Free Cisco CCNA Training: Edge Ports and RSTP Topology Changes
By Chris Bryant ⋅ May 14, 2008 ⋅ Post a comment
There are some types of ports which are found only with RSTP. Root ports are common, but with RSTP there are edge ports and point to point, or PTP ports. An edge port is any port that is at the end or the edge of a network – hence the name. Here, it is any [...]
Free Cisco CCNA Training: Rapid Spanning Tree Protocol (RSTP)
By Chris Bryant ⋅ May 14, 2008 ⋅ Post a comment
After understanding how Spanning Tree Protocol works and needs to be configured, it is time to get into the details of Rapid Spanning Tree Protocol or RSTP. Some of you may ask after spending so much time on understanding STP, why RSTP? In STP, there always is a 30-second delay in convergence and most of [...]
Free Cisco CCNA Training: ROAS Troubleshooting
By Chris Bryant ⋅ May 14, 2008 ⋅ Post a comment
Router on a Stick (ROAS) troubleshooting can tend to be a bit tricky without a properly structured approach. I always suggest the approach I’ve always used, however, as long as you pick a structured approach (either left to right or right to left) you should be fine. In this video, I’ll go over the approach [...]
Free Cisco CCNA Training: Subinterfaces
By Chris Bryant ⋅ May 14, 2008 ⋅ Post a comment
Subinterfaces are essentially logical interfaces created on a physical interface. A subinterface is a logical division on a physical interface. A subinterface may be configured on a router using two commands on the Fast Ethernet port of the router. The first is the encapsulation command which must match the encap type set on the trunk [...]
Free Cisco CCNA Training: ROAS Configuration
By Chris Bryant ⋅ May 14, 2008 ⋅ Post a comment
In this Cisco CCNA training video, I’ll be going over the different steps and options you’ll need to go over when configuring your Router on a Stick (ROAS). Before we start, be sure to watch my video explaining a Router on a Stick to be sure you are up to date on the requirements. First, [...]
Free Cisco CCNA Training: “Router on a Stick”
By Chris Bryant ⋅ May 14, 2008 ⋅ Post a comment
What is a “Router on a Stick” or ROAS? As an alternative to an L3 switch, a Router on a Stick configuration is basically a method using a router to enable interVLAN communication. An example of a router on a stick would be two VLANs connected to a switch, with a router (connected via a [...]
Free Cisco CCNA Training: VTP Pruning
By Chris Bryant ⋅ May 14, 2008 ⋅ Post a comment
In this CCNA training video, I’m going to teach you a bit about VTP Pruning (VLAN Trunking Protocol Pruning). Since trunk ports belong to all Virtual LANs, broadcasts and multicasts are generally forwarded to all the Virtual LANs it knows about, even if the remote switch has no ports in that Virtual LAN. This is [...]