How to configure IPv6 Static Route How to configure IPv6 Static Route

In order to address the IPv6-oriented configuration of a router in a simple way, we will see in this article how to configure a ro...

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Fundamental of Switching  - MAC Address Table & Content-Addressable Memory (CAM) Fundamental of Switching - MAC Address Table & Content-Addressable Memory (CAM)

An Ethernet switch (or switch) is a device that connects several segments ( cable or physical link) of a network. This is a level 2 dev...

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Enhanced Interior Gateway Routing Protocol (EIGRP) Enhanced Interior Gateway Routing Protocol (EIGRP)

Enhanced Interior Gateway Routing Protocol (EIGRP) is a routing protocol developed by Cisco. This article takes up the basics of its opera...

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How to configure advance trunk dot1q on Cisco Catalyst Switch How to configure advance trunk dot1q on Cisco Catalyst Switch

A trunk is a configuration of a link, usually between two switches but not only, allowing to carry the traffic of several VLANs there. ...

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how to configur Native VLAN on a Trunk Links how to configur Native VLAN on a Trunk Links

As a reminder, a trunk is a link intended to convey the traffic of several vlans. Since a standard Ethernet frame does not have informati...

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What is link layer discovery protocol (LLDP) What is link layer discovery protocol (LLDP)

LLDP is a standardized network discovery protocol (IEEE 802.1AB) designed to supplement the multitude of proprietary protocols of the sa...

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OSPF over Frame-Relay: Non-Broadcast OSPF over Frame-Relay: Non-Broadcast

Here is the fourth part of the configuration of our OSPF lab. In this article, we will discuss how to configure OSPF to work on a Frame-...

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Spanning-Tree Protocol(STP): Port cost vs Port priority Spanning-Tree Protocol(STP): Port cost vs Port priority

When Spanning-Tree (STP) solves a loop in a network of switches, it follows a series of parameters to determine the best path to the Root B...

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OSPF Virtual Link OSPF Virtual Link

Here is the third part of the configuration of our OSPF lab. The continuation of the last article . After configuring the area 0, the area 1...

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How to configure Multi-area OSPF How to configure Multi-area OSPF

This article is the second (but not the last) part of the OSPF lab configuration presented in the previous article( Configuring OSPF in a si...

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How to configure DHCP on a Cisco router How to configure DHCP on a Cisco router

The DHCP (Dynamic Host Configuration Protocol) protocol is a feature to provide machines that require a full IP, IPv4 address, subnet mask,...

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VLAN Access-List VLAN Access-List

ACLs (Access Control Lists) traditional, sometimes also called RACL (Router-based ACL) allow us to filter traffic that passes from one netw...

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How to configure trunk port on cisco switches How to configure trunk port on cisco switches

A trunk, what is it? A trunk is a link between two devices, him more often between two switch, configured so that you can move frames Ethe...

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How to Configure  NAT on a Cisco Router How to Configure NAT on a Cisco Router

When it comes to interconnecting a private network (whether corporate or private) in IPv4, it is virtually impossible to do without NA...

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Gateway Load-Balancing Protocol(GLBP) Gateway Load-Balancing Protocol(GLBP)

After HSRP and VRRP , it is time to introduce the next generation of Protocol that supports redundancy of gateways: GLBP...

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What is Virtual Router Redundancy Protocol(VRRP) What is Virtual Router Redundancy Protocol(VRRP)

In the previous article we saw a simple implementation of HSRP which allows to manage gateway redundancy (among others). Although simple t...

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Hot Standby Router Protocol(HSRP) Hot Standby Router Protocol(HSRP)

On a PC one usually configures a single gateway by default ... But what happens if it is out of order? ... The answer is simple ... no way ...

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How to Configure Multilink PPP Connections for Serial interfaces How to Configure Multilink PPP Connections for Serial interfaces

What is Multilink PPP? This is a standard protocol that allows the aggregation of PPP links into a single PPP link. The bundled link...

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What is IPv6 (Internet Protocol Version 6) What is IPv6 (Internet Protocol Version 6)

This is not a scoop, public IPv4 address space melts like snow in the sun. According to current estimates, only 5% of all addresses wou...

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how to Configure OSPF in a Single Area how to Configure OSPF in a Single Area

First lab dedicated to Configuring OSPF in a Single Area. It is the beginning of a series which will aim to establish a relatively advanced...

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 Inter VLAN Routing Inter VLAN Routing

Routing between LANs or Inter VLAN routing ... same fight! For a router to route a packet from one broadcast domain to another it must ha...

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