CCNP

Wireless LAN ( WLAN ) Overview

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secure ssid

Most of us using mobile devices such laptops, tablets, phones etc. And today, Wireless LAN ( WLAN ) is a very important part of network design. Here is a simple topology example for Wireless LAN ( WLAN ). Simply clients are connected to APN ( Access Points ) on wireless, and APN’s are connected to our network […]

CCNP

What is EIGRP And How It Works

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eigrp example

Let’s do some routing and we are getting started with EIGRP : Enhanced Interior Gateway Routing Protocol. First we need to answer the question “what is eigrp” ? EIGRP is a dynamic routing protocol and provides us some great features. It uses “DUAL” algorithm to find the best path which is found by Dr. J.J. Garcia-Luna […]

CCNP

VOIP (Voice Over IP) And Benefits & Configuring VOIP

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voip

PSTN voice calls require 64 kbps bandwith, VOIP voice calls require 8 kbps bandwith. Here is a good entry for “why we use VOIP (Voice Over IP) ? ” question. VOIP is a great way for the corporates to make their calls really cheaper way and to keep their networks flexible. Let’s see a voip topology […]

CCNP

Virtual Router Redundancy Protocol (VRRP) Overview

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wan

HSRP has a brother whose name is VRRP ! As you know we told that HSRP is a Cisco proprietary protocol. The difference between VRRP and HSRP is this, VRRP is an industry standard. There are just some terminology changes and a little bit configuration differences between them. Let’s check it. – We are using Active […]

CCNP

Trunking And Native VLAN

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trunk

It’s time to talk about trunking and native vlan. Well perhaps it would be better if we post this article before VTP but not so much problem i think !Trunking works at Layer-2 of OSI referance model and carries multi vlan information between VLANs. Each frame sets the VLAN information. ( That is known as […]

CCNP

Step By Step EIGRP Configuration Example

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eigrp configuration

After overview of EIGRP , it is time to take a look at EIGRP configuration. EIGRP configuration is really awesome and not so hard if you compare with OSPF or etc. Let’s take a look to figure below and configure this topology via EIGRP step by step. Configure the network above with EIGRP using Autonomous system number 90. Use […]

CCNP

Private VLAN Details And Configuration

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private vlan

  If you have really private traffic and want to isolate it at Layer-2 level , all right, you are welcome to Private VLAN. You can think a private VLAN like “VLAN in a VLAN”.There are many ways to set up security , but PVLANs do it at Layer-2. You can use access-lists , IPS […]