The Come Back

ByAbdullah MedhatMay 31, 20201 min read

After a very long break from the blog **cough** 6 years **cough**, finally joining the CCIE club myself, a couple of changes to the blog name (Networking-Scouts, Network-Rise, PacketShow and now Recursive-Lookup), a couple of career changes, lots of new…


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Code/Script testing methods

ByByOsama AboelfathFebruary 15, 20212 min read

In the era of Network automation and DevOps, it became important not only to code but also to test our code and make sure it can successfully operate and gives…

Extending layer 2 between two VPC pairs

ByByOsama AboelfathSeptember 10, 20204 min read

As you might already know, VPC or Virtual Port Channel- is a multi-chassis enabling feature by Cisco, available on Nexus platforms. This protocol was needed to overcome the drawbacks of…

OSPF Down-bit and Capability vrf-lite

ByByOsama AboelfathDecember 10, 20133 min read

This topic is not only to understand what is the OSPF Down-bit or Capability vrf-lite feature, but the main purpose of this article is to eliminate a common confusion caused…

IPv6 Neighbor Discovery Protocol

ByByOsama AboelfathSeptember 5, 20136 min read

The Neighbor Discovery Protocol (ND) is described in RFC 4861 as a protocol in the internet protocol suite operates in the link-layer of the internet module and used by IPv6…

OSPF Type-4 LSA

ByByOsama AboelfathAugust 1, 20134 min read

The importance of this article lies in why do the ABR (Area Boarder Routers) need to originate a new type of LSA (Link State Advertisements) side to side to Type-5…

L2VPN Interworking

ByByOsama AboelfathJuly 21, 20132 min read

The subject of this topic is divided into two parts L2VPN & Interworking, Starting with the first part “L2VPN” we are not going deeply with the L2VPN architecture but in…

Multi-VRF Selection

ByByAbdullah MedhatJune 30, 20135 min read

While searching for a solution for a problem that I was facing a week ago, I stumbled upon this feature “Multi-VRF selection”, only the name was enough to make curious…

ISP LAB (MPLS Cloud) – Part3

ByByOsama AboelfathJune 27, 20138 min read

As mentioned in ISP LAB Topology – Part1 before getting into the configuration part we will give a brief about the technologies/protocols used in our task. In our first task…

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ISP LAB (MPLS Cloud) – Part3

ByOsama AboelfathJune 27, 20138 min read

As mentioned in ISP LAB Topology – Part1 before getting into the configuration part we will give a brief about…

ISP LAB Topology – Part 1

ByOsama AboelfathJune 14, 20132 min read

Below is the basic topology which we will use to build our simple ISP MPLS network, services and applications: This…

Redistribution needs, issues, and configuration

ByM.galaaSeptember 1, 20126 min read

Outlines: 1-      Why we need multiple routing protocols? Which lead to need redistribution 2-      Redistribution meaning. 3-      Methods of Redistribution.…

ISP Sample LAB

ByOsama AboelfathFebruary 11, 20122 min read

At the first and before we go, I assume that everyone about to participate with us in this lab has…

Dynamips/Dynagen HowTo

ByAbdullah MedhatSeptember 23, 20117 min read

Dynamips/Dynagen HowTo: This is intended to be a simple guide for installing and using Dynamips/Dynagen on Linux Os. A- Installing…

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