As we all know CBT nuggets happens to provide world class training for IT Certifications. They hire best trainers in the industry and deliver excellent training materials for aspiring IT Professionals. When it comes to Cisco Certifications Jeremy Cioara is my favorite. Why? You will discover soon.

He has authored various Cisco books some of them are CCNP Voice Official Certification Guide, Cisco IP Telephony (CIPT), CCNA Exam prep and CCNA Practice questions.  Most important contribution to Cisco Certifications he has made is his affiliation with CBT nuggets to produce world class Cisco training stuff staring from CCNA, CCNP, to CCIE.

When it come the Cisco CCNP Route 642-902 CBT Nuggets Series it’s an awesome series with 28 videos covering all the topics required to pass the CCNP Route exam. What make this series outstanding are the speaking skills of Jeremy Cioara and the in-depth technical knowledge he possess. Jeremy connects with audience as if he is talking to you directly; the way he teaches any concept is amazing. Especially his personalized stories and tips he shares make this series outstanding.

I don’t want to emphasize on the contents of this series as its covers A to Z of CCNP route exam, one thing I would like to highlight about this series is the inclusion of GNS 3 labs , it does gives hands on experience for the CCNP route exam starting from EIGRP to OSPF, BGP and IPv6.  One more key element of this series is inclusion of MP3 files which are quite handy while you are driving or travelling, again it’s the quality of great speaker who manages you to learn the concept even without watching them.

A valuable asset for CCNP aspirer, I strongly recommend all CCNP aspirers to buy this series.

In my previous post I did discussed about some of the key features of NX-OS lets see what else it offer

• Base services: The default license that ships with NX-OS covers Layer 2 protocols including such features such as Spanning Tree, virtual LANs (VLAN), Private VLANS, and Unidirectional Link Detection (UDLD).
• Enterprise Services Package: Provides Layer 3 protocols such as Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), Intermediate System-to-Intermediate System (ISIS), Enhanced Interior Gateway Routing Protocol (EIGRP), Policy-Based Routing (PBR), Protocol Independent Multicast (PIM), and Generic Routing Encapsulation (GRE).
• Advanced Services Package: Provides Virtual Device Contexts (VDC), Cisco Trustsec (CTS), and Overlay Transport Virtualization (OTV).
• Transport Services License: Provides Overlay Transport Virtualization (OTV) and Multiprotocol Label Switching (MPLS) (when available).

We are familiar with the traditional Cisco IOS command line interface (CLI); the CLI interface of NX-OS is pretty similar to Cisco IOS.

One of the key differences I have noted is NX-OS is when you first log into NX-OS, you go directly into EXEC ode.

NX-OS features are based on license model, where as in IOS what matter was the type of IOS you installed. A good beginning from Cisco as you can install the required features, more over you can try a 120 day license grace period for testing.  After 120 days of testing the features will be automatically removed. This is some thing you never experienced in Cisco IOS.

Cisco NX-OS has the capability to either enable or disable the features OSPF, BGP, etc. by using the feature configuration command.

I will try to come up with some more details in the upcoming post.

       RIP

       OSPF

       BGP

       IS-IS

       IGRP

       EIGRP

Each routing protocol has its own Administrative Distance (AD), which is a value representing the trustworthiness of the specific routing protocol. If a router learns a destination route from two or more routing protocols, it selects the route from the protocol having the smallest Administrative Distance.

The below table shows the default Administrative Distance (AD) values for each routing protocol:

Now, if the router learns a specific destination route from both OSPF and RIP, it will select the route learned from OSPF because this protocol has a smaller AD compared to RIP (110 instead of 120).