ACP-DC

  • [ACP-DC Training #14] VXLAN

    Why VXLAN? The foundation of VXLAN functionality is the RFC 7348 standard, which provides an alternative to the existing traditional VLAN concept. 1. Overcoming the Limitation of VLAN Count (ID Scalability) Traditional VLANs use 12-bit numeric tags inside the 802.1Q header. This means that only a maximum of 4,094 different VLANs can be created…

  • [ACP-DC Training #13] Spine-Leaf Architecture

    The Spine-Leaf architecture consists of Spine switches acting as the core, Leaf switches serving as the access layer, and numerous endpoints responsible for the data center's computing and storage resources. This structure is highly scalable, efficient, and optimized for low-latency communication, making it highly suitable for modern data center environments that require high-performance networks. The goal of a typical data center architecture, the Spine-Leaf architecture…

  • [ACP-DC Training #12] Virtual Routing and Forwarding (VRF)

    Virtual Routing and Forwarding (VRF) is an L3 (Network Layer) isolation technology used to build a Virtual Private Network (VPN). VRF isolates routing tables from other VPNs within the system and enables the use of redundant IP addresses. In other words, VRF is a technology that allows multiple routing table instances to coexist simultaneously within a single router. Each…

  • [ACP-DC Training#11] Loop Prevention and LAG Implementation

    Data center design involves multiple layers of redundancy, extending from server NIC cards to uplinks and switches. While this redundancy is essential, it simultaneously increases the risk of network loops, broadcast storms, and network outages. Today, we will learn key technologies to prevent these risks and build high-performance, redundant L2 data centers. 1. Structure of a Collapsed Core L2 Data Center A data center is…

  • [acp-dc training#10] vsx (2)

    In the previous post, we explored VSX, the virtualization technology of HPE Aruba Networking AOS-CX switches. We explained the components of VSX, the differences from VSF, and its advantages. Today, we will cover the practical aspects. We will examine how to utilize VSX in practice, such as live software upgrades and technologies like Split Brain. VSX Control Plane Separation and Software Update Control Plane…

  • [ACP-DC Training#9] VSX (1)

    Today, the demand for network availability is ceaseless. Customers require networks that operate 24 hours a day, 365 days a year, and HPE’s VSX technology offers a solution to this problem. HPE Aruba Networking’s VSX technology is a virtualization technology for data center and core switches running on the AOS-CX operating system. This solution enables switches in critical areas to function as if they were a single virtualized…

  • [ACP-DC Training#8] 2-Tier Design for Small Data Centers

    Layer 2 two-tier designs are simple to deploy, operate, and troubleshoot because they utilize existing traditional protocols. They can be managed without specialized knowledge of overlay protocols or complex designs. This architecture is suitable for small to medium-sized data centers, but in larger environments, it can also be implemented at the data center POD level. In a two-tier data center, host information is traditional bridge…

  • [ACP-DC Training#7] Deploying Data Center Switches

    Deploying data center switches may look similar to installing campus switches, but there are unique aspects specific to data centers. In particular, data center switches often undergo a 'staging' process to prepare their configuration before being brought into the field. Today, we will take a closer look at what switch staging is and the two main provisioning methods. Switch Provisioning: The Challenge…

  • [ACP-DC Training #5] Data Center Network Architecture

    Today, I would like to discuss data center network architecture. When designing a data center, many factors are considered, such as its purpose, size, and future scalability. The architecture is then designed to align with these factors, taking into account available budget and time. Let's explore the different architectures available, as well as the characteristics, advantages, and disadvantages of each. 1-Tier Design 1-Tier…

  • [ACP-DC Training #4] Building a Data Center Network

    We have finally successfully completed the first step of building the data center network. Over the past period, we have understood the basic overview of the data center network and secured sufficient important resources and materials, namely the necessary products (hardware) and technologies (protocols). This process can be likened to an architect understanding blueprints and preparing the required materials before constructing a building. From now on, we will actually utilize these prepared resources to…