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Virtual Extensible Local Area Network (VXLAN): The bridge to a Flexible and Robust Data Center Network

Virtual Extensible Local Area Network (VXLAN): The bridge to a Flexible and Robust Data Center Network

Traditional Layer 2 and Layer 3 networks, along with multicast technologies, play a crucial role in the data center. But what if we could extend those Layer 2 domains beyond the confines of a single location? In this blog, we'll explore how VXLAN (Virtual Extensible LAN) overcomes the

Configuring IP Multicast in Data Center Networks

Configuring IP Multicast in Data Center Networks

In the previous blog, we discussed IP Multicast in detail. This blog provides a guide on how to configure IP Multicast. Configuring Multicast is relatively straightforward, so this should be a short blog! Protocol Independent Multicast (PIM) Configuration PIM-SM (Sparse Mode) Configuration To configure PIM on a Cisco Nexus switch,

Increasing Data Center Efficiency with IP Multicast

Increasing Data Center Efficiency with IP Multicast

Imagine streaming live video to thousands of viewers simultaneously. How can we do this without overwhelming the network? The answer is IP multicast. Traditionally, networks relied on unicast (one-to-one) and broadcast (one-to-all) communication. Broadcast, while useful for reaching multiple devices, floods the network, causing unnecessary overhead and security concerns. IP

BGP Configuration on Cisco Nexus Switches

BGP Configuration on Cisco Nexus Switches

Welcome back, my faithful readers! In the last two blog posts, we delved into BGP in some depth. With that foundation, I believe we're ready to jump into configurations! This blog will focus on BGP v4 configurations on Cisco Nexus switches. Configuring BGP: The Three Major Steps Configuring

BGP: BGP Attributes and Path Selection and Manipulation

BGP: BGP Attributes and Path Selection and Manipulation

In the previous blog post, we established a strong foundation for understanding the Border Gateway Protocol (BGP), exploring its core functions and significance in internet routing. Now, we'll take it a step further and delve into the world of BGP attributes. BGP attributes are pieces of information added

Border Gateway Protocol: An introduction to the Routing Protocol of the Internet!

Border Gateway Protocol: An introduction to the Routing Protocol of the Internet!

In previous blogs, we discussed OSPF, an internal gateway protocol (IGP) that distributes routing information within a single Autonomous System (AS). An AS is a network or group of networks managed by a single entity, like a company or government. However, the internet is formed by the interconnection of these

Configuring OSPF in Data Center Networks

Configuring OSPF in Data Center Networks

In our previous blogs, we explored the fundamental concepts of OSPF and delved into some of its key details. Now, we'll demonstrate how to configure OSPF in a data center environment, using Cisco Nexus devices as our example platform. A Brief Overview of OSPF OSPF (Open Shortest Path

OSPF Neighbor Establishment and LSAs

OSPF Neighbor Establishment and LSAs

In the previous blog, we introduced OSPF and laid a good foundation for understanding the protocol and how it works. In this blog, we'll continue by delving deeper into the details of how OSPF operates and serves the network. Fundamental OSPF Terms Before we begin, let's

OSPF Fundamentals for Data Center Networks

OSPF Fundamentals for Data Center Networks

In the recently completed series on switching in the data center, we discussed protocols and concepts that are usually implemented in the Local Area Network (LAN). To send packets between multiple LANs, networks perform what is known as routing. This is the process of selecting paths in a network along

Interaction Between Switching Protocols: STP, vPC and HSRP

Interaction Between Switching Protocols: STP, vPC and HSRP

In previous blogs, we were able to give an in-depth study on these protocols. The goal of all the protocols discussed is to create a stable, scalable, efficient, and redundant Layer 2 network. The interoperability of these protocols is essential to achieving this goal. From the study it becomes somewhat

Gateway Redundancy Explained: How FHRP Keeps Your Network Connected

Gateway Redundancy Explained: How FHRP Keeps Your Network Connected

Today, data centers are incredibly busy, processing countless online transactions and communicating with clients across the world. The gateway acts as the crucial link between the local network and external networks like the internet, making it a single point of failure that could disrupt these vital operations. To prevent this,

Maximizing Network Bandwidth: How Port Channels and vPCs Enhance Performance

Maximizing Network Bandwidth: How Port Channels and vPCs Enhance Performance

Spanning Tree Protocol (STP) is a double-edged sword. While it prevents network loops, it can also become a bottleneck for your data center's performance. On the last blog, we discussed how STP creates a loop-free topology in redundant networks. We saw how STP aids redundancy by actively reacting

Preventing Network Loops with Spanning Tree Protocol (STP)

Preventing Network Loops with Spanning Tree Protocol (STP)

Welcome to my CCNP Data Center journey! In this blog series, I'll be exploring the key concepts of data center networking, starting with a deep dive into switching protocols. I'll assume you have a foundational understanding of networking principles as we explore these more advanced topics.