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  • All
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  • FUNNY
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  • Life
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  • Service Provider Networks
  • Sub Marine Cables
  • TCP - UDP - QUIC
  • Transport Network
  • Uncategorized
  • VPN
  • Wireless
All
  • All
  • Announcements
  • Basic Networking
  • Best Practices in Network Design
  • BGP
  • BGP Security
  • BOOTCAMP ANNOUNCEMENTS
  • Broadband
  • CCDE BOOTCAMP
  • CCDE CERTIFICATION
  • CCDE Preparation Recommendations
  • CCIE Enterprise Infrastructure
  • CCIE SP
  • Certifications
  • Cisco SD-WAN
  • Cloud Computing
  • Data Center
  • Definitions
  • Design Scenarios
  • Discussions
  • DMVPN
  • EIGRP
  • Fast Convergence
  • FUNNY
  • IGP
  • Inspiring
  • Inter AS MPLS VPN
  • IOT
  • IPv6
  • IS-IS
  • Layer 2 Technologies
  • Life
  • LISP
  • Mobile Broadband
  • MPLS
  • MPLS Traffic Engineering
  • MPLS Transport Profile
  • MPLS VPNs
  • Multicast
  • Network Design
  • Network Monitoring
  • OSPF
  • Peering
  • Quality of Service
  • SD-Access
  • SD-WAN
  • Security
  • Segment Routing
  • Service Provider Networks
  • Sub Marine Cables
  • TCP - UDP - QUIC
  • Transport Network
  • Uncategorized
  • VPN
  • Wireless

Mobile Broadband Ecosystem

Mobile Broadband… You might have heard this term before, possibly in an ISP environment. The term has always represented a name of a department within a mobile operator or a vendor organization. It is always …

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Common Networking Protocols in LAN, WAN and Datacenter

Spanning Tree, Link Aggregation , VLAN and First Hop Redundancy protocols are used in Campus, Service Provider Access and Aggregation and in the Datacenter environment. There are definitely other protocols which are common across the …

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Push and Pull Based Control Plane Mechanisms

Control plane packets are used to build a communication path between the networking devices. In some cases control plane is used to advertise and learn the endpoints. Imagine a network which consist of these networking …

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Datacenter Design: Shortest Path Bridging 802.1aq

IEEE 802.1aq Shortest Path Bridging (SPB) uses IS-IS as an underlying control plane mechanism that allows all the links in the topology to be active. In sum, it supports layer 2 multipath. SPB is used …

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HSRP, VRRP and GLBP Basics and Comparison

HSRP, VRRP and GLBP are the three commonly used first hop redundancy protocols in local area networks and the data center.

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Inter AS Option C – Design Considerations and Comparison

Inter AS Option C is the most complex, insecure, uncommon, but extremely scalable inter provider MPLS VPN solution.

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Russ White – Orhan Ergun CCDE Practical Exam Scenario

I am glad to announce that Russ White and I have been preparing a CCDE Practical Exam ( Lab Exam ) Scenario. This is the most realistic scenario available anywhere. Why? Because it is not …

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MPLS Layer 3 VPN Deployment

In this post I will explain MPLS Layer 3 VPN deployment by providing a case study. This deployment mainly will be for green field environment where you deploy network nodes and protocols from scratch. This …

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PS Core Network Concepts

Most of the educational documents related to PS Core Network start with Call Flows. Attach Call Flow, PDP Context, Paging, etc. Basically that was my problem when I started working in PS Core because the …

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EPC architecture

Evolved Packet Core – Welcome to Long Term Evolution!

As an end user, I am always welcoming the “4G” Signal indicator on my mobile because basically for me this maps to a better Download Speed, good quality VoIP calls (skype, Hangout, Whatsapp, etc) , …

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IS-IS Design Considerations on MPLS backbone

IS-IS Design – Using IS-IS with MPLS require some important design considerations. IS-IS as a scalable link state routing protocol has been used in the Service Provider networks for decades. In fact, eight of the …

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What is MPLS tunnel label and why it is used?

In networking we use many times different terms to define the same thing. MPLS tunnel label or transport label are just two of those.

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