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CCNA study: FHRP or “First Hop Redundancy Protocols”

CCNA study: FHRP or “First Hop Redundancy Protocols”

| May 30, 2014 | 4 Replies

I’m amazed at how the approach of the CCNA certification has changed since the time I took my test and entered the Cisco world officially. Even though I personally believe Cisco has done a great job at gathering the topics and assembling tough evaluations, somehow there comes a point where technology changes and the topics […]

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Explicit Tracking of Group Membership and Fast Leave in IGMP

Explicit Tracking of Group Membership and Fast Leave in IGMP

| March 26, 2014 | Reply

  Before I explain what and how explicit tracking of group membership works in IGMP, let me give you a brief introduction to IGMP. A brief introduction to IGMP: Internet Group Management Protocol ( IGMP ) is used by end hosts and routers to exchange multicast group membership information. IGMP has two parts. One part […]

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What is Software Defined Networking (SDN) – Part 2

What is Software Defined Networking (SDN) – Part 2

| December 18, 2013 | 7 Replies

In my previous post, I explained what is Software Defined Networking (SDN). As I wanted to keep the introduction simple, I avoided discussing SDN internals in that post. Now that you understand what SDN is, let us get into other details.   SDN Internals In SDN, sequence of packets exchanged between two end-points is known as […]

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Interview with Liz Burn, Juniper Networks Certification Program Director

Interview with Liz Burn, Juniper Networks Certification Program Director

| November 25, 2013 | 1 Reply

The subject of Juniper Networks certifications is becoming more and more popular here on RouterFreak – just check the post You Don’t Need Cisco to be a Great Network Engineer and Junos Genius: your APP for Juniper Networks certifications. The question many of you have in mind is: why get a Juniper Networks Certification? Is it […]

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What is Software Defined Networking (SDN) – Part 1

What is Software Defined Networking (SDN) – Part 1

| November 13, 2013 | 5 Replies

The whole data communication industry is bullish about Software Defined Networking (SDN). What is SDN? Is it really a game changer? I think nobody knows that for sure because it is still evolving. While there have been some companies which have deployed SDN in their Data Centers, it is still not clear how and when it […]

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Junos Genius: your APP for Juniper Networks certifications

Junos Genius: your APP for Juniper Networks certifications

| October 22, 2013 | 5 Replies

Are you preparing for a Juniper Networks certification? Remember what we wrote some time ago: You Don’t Need Cisco to be a Great Network Engineer. Some of you may have already jumped on the Juniper wagon, as certified Engineers are still in high demand. Just recently the vendor released an interesting app to help all of […]

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Other Recent Posts

CCNA Notes: How to Study

CCNA Notes: How to Study

| July 22, 2014 | 2 Replies

Cisco Press has published several great books that cover the topics of the CCNA and CCENT in much detail.These books provide value to anyone looking to pass the exam, mainly because of the way they are structured. Cisco Press has designed the study books for those who have no experience and at the same time […]

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CCNA Notes: Simple Network Management Protocol (SNMP) & Syslog

CCNA Notes: Simple Network Management Protocol (SNMP) & Syslog

| July 8, 2014 | Reply

Notes: SNMP is an application layer protocol that provides a message format for communication between SNMP managers and agents. Information stored in the management information base (MIB) Cisco Prime is a SNMP manager Messages that send data are Get Messages Messages that write data are Set Messages SNMP traps are configured to notify admins of […]

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Understanding VLANs and Routed VLAN Interface in Cisco Switch

Understanding VLANs and Routed VLAN Interface in Cisco Switch

| June 17, 2014 | Reply

VLANs are virtual LANs that is used to segregate broadcast domains in a layer 2 domain. Logically, VLANs allows you to setup multiple switches in a same physical switch. VLANs are used to isolate different types of traffic in IP networks like voice, data, management, web, and so on. Similarly, VLANs can also be used […]

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Preparing a Cisco Certification – What you must do to succeed?

Preparing a Cisco Certification – What you must do to succeed?

| June 6, 2014 | Reply

Amongst the many sought after certifications, the ones offered by Cisco are considered by hiring managers, recruiters, industry professionals and generally everybody in the IT industry as the most valuable certifications you can have on your resume. Whether it’s CCNA or higher-level Cisco certifications like the CCNP or CCIE, each certification can give your career […]

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