Configuring IPv6 on our Internetwork
In this article, we’ll configure the internetwork using five routers connected together but we are not going to add IPv6…
Migrating to IPv6 – CCNA Course
We certainly have talked a lot about how IPv6 works and how we can configure it to work on our…
How IPv6 works in an Internetwork
It’s time to explore the finer points of IPv6. A great place to start is by showing you how to…
Internet Protocol Version 6 (IPv6)
This article introduces you to the next generation of TCP/IP: IP version 6 (IPv6). Because of the many deficiencies found…
Introduction to Frame Relay Technology
Frame relay is still one of the most popular WAN services deployed over the past decade, and there’s a good…
Link Control Protocol (LCP) configuration options
Link control protocol (LCP) offers different PPP encapsulation options, including the following: Authentication: This option tells the calling side of…
Cabling the Serial Wide Area Network
As you can imagine, there are a few things that you need to know before connecting your WAN in order…
Introduction to wide area networks
So what, exactly, is it makes something a wide area network (WAN) instead of a local area network (LAN)? well,…
Wireless Implementation Guidelines
As we have an article for the overview of the wireless security considerations, let’s talk about planning to implement wireless…
Wireless security and Implementation considerations
Understanding the threats Introducing wireless networking into your organization opens the door to three new types of attacks on your…
The 802.11 standards family
Now that you have a foundational understanding of RF signals, we can move to the 802.11 standards. When many network…
Cisco’s Wireless Technologies
The funny thing about wireless LAN (WLANs) is that the topology was just so cool that network administrators started deploying…
Enabling Internet connectivity with NAT
We can still remember the very first time we saw Network Address Translation (NAT) in action. “This is the most…
Context-based Access Control (Cisco IOS Firewall)
You’ve got to have the Cisco IOS firewall set in the IOS to make use of Context-based Access control (CBAC),…
Advanced Access lists – CCNA Course
In this article, we are going to show you some more advanced ways to use access lists. Most of the…
Extended Access Lists – CCNA Course
In the standard IP access list example, you can notice how you have to block all access from the Sales…
Standard Access Lists – CCNA Course
Standard IP access lists filter network traffic by examining the source IP address in a packet. You create a standard…
Introduction to Access Lists
An Access list is essentially a list of conditions that categorize packets. They can really help when you need to…
Configuring VLAN Trunking Protocol (VTP)
All Cisco switches are configured to be VTP servers by default. To configure VTP, first, you have to configure the…
Configuring voice VLANs – CCNA Course
The voice VLAN feature enables access ports to carry IP voice traffic from an IP phone. When a switch is…
Configuring Inter-VLAN Routing
By default, only hosts that are members of the same VLAN can communicate. To change this and allow inter-VLAN communication,…
Configuring Virtual Local Area Networks (VLANs)
It may come as surprise to you, but configuring VLANs is actually pretty easy. Figuring out which users you want…
VLAN Identification Methods – CCNA Course
Most of the time, VLANs are created by a sys admin who proceeds to assign switch ports to each VLAN.…
Introduction to Virtual Local Area Network (VLAN)
The following figure shows how layer 2 switched networks are typically designed as flat networks. With this configuration, every broadcast…
Troubleshooting Basic Switch Connectivity – CCNA Course
As always, when troubleshooting connectivity issues, use a layered approach and eliminate possibilities at each layer to home in on…
Enhancements to Spanning Tree Protocol (STP)
The 802.1d spanning tree protocol was created with very few design flaws; however, as with most great things, there is…
Initial Switch Configurations – CCNA Course
Catalyst switches, for the most part, are designed so that the default state of the switch allows for basic layer…
Layer 2 Switching and Spanning Tree Protocol (STP)
We already have an article “Datalink networking concepts”, that you can use bridges and switches to segment a LAN into…
EIGRP Configuration – CCNA Course
One of the greatest aspects of EIGRP is that you get all this advanced functionality with minimal configuration effort. EIGRP…
Balanced Hybrid operations – CCNA Course
Balanced hybrid routing protocols are sometimes called advanced distance vector routing protocols. The rationale behind this logic is that these…