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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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…

Understanding policy-map – police (bc) and (be) parameters

ByByMohamed AlaaJune 25, 201311 min read

While i was working in packet loss issue with one of our customers i found the below results:First we need to know what (bc) and (be) values are using for:Policing uses…

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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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