Data Center LAN Migration Guide - Juniper Networks

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Data Center LAN Migration Guide CONTROL PLANE DATA PLANE Figure 7: The modular Junos OS architecture The advantages of modularity reach beyond the operating system software’s stable, evolutionary design. For example, the Junos OS architecture’s process modules run independently in their own protected memory space, so one module cannot disrupt another. The architecture also provides separation between control and forwarding functions to support predictable high performance with powerful scalability. This separation also hardens Junos OS against distributed denial-of-service (DDoS) attacks. Junos operating system’s modularity is integral to the high reliability, performance, and scalability delivered by its software design. It enables unified in-service software upgrade (ISSU), graceful Routing Engine switchover (GRES), and nonstop routing. Automated Scripting with Junoscript Automation Management CLI Scripts Routing OPEN MANAGEMENT INTERFACES Interfaces Kernel NSM/ Junos Space Packet Forwarding Physical Interfaces Service App 1 Service App 2 Service App 3 Service App n With Junoscript Automation, experienced engineers can create scripts that reflect their own organization’s needs and procedures. The scripts can be used to flag potential errors in basic configuration elements such as interfaces and peering. The scripts can also automate network troubleshooting and quickly detect, diagnose, and fix problems as they occur. In this way, new personnel running the scripts benefit from their predecessors’ long-term knowledge and expertise. Networks using Junoscript Automation can increase productivity, reduce OpEx, and increase high availability (HA), since the most common reason for a network outage is operator error. For more detailed information on Junos Script Automation, please see: www.juniper.net/us/en/community/junos. 18 Copyright © 2012, Juniper Networks, Inc. Module n J-Web Services Interfaces Toolkit SERVICES PLANE
Data Center LAN Migration Guide A key benefit of using Junos OS is lower TCO as a result of reduced operational challenges and improved operational productivity at all levels in the network. Switch and Router Downtime Costs 27%* Lower with Junos (Based on reduction in frequency and duration of unplanned network events) Figure 8: Junos OS lowers operations costs across the data center An independent commissioned study conducted by Forrester Consulting3 (www.juniper.net/us/en/reports/junos_tei.pdf) found that the use of Junos OS and Juniper platforms produced a 41% reduction in overall operations costs for network operational tasks including planning and provisioning, deployment, and planned and unplanned network events. Juniper Platform Overview The ability to migrate from a three-tier network design to a simpler two-tier design with increased performance, scalability, and simplicity is predicated on the availability of hardware-based services found in networking platforms such as the EX Series Ethernet Switches, MX Series 3D Universal Edge Routers, and the SRX Series Services Gateways. A consistent and unified view of the data center, campus, and branch office networks is provided by Juniper’s “single pane of glass” management platforms, including the recently introduced Junos Space. The following section provides a brief overview of the capabilities of Juniper’s platforms. All of the Junos OS-based platforms highlighted provide feature consistency throughout the data center LAN and lower TCO. EX4200 Switch with Virtual Chassis Technology Critical Categories of Enterprise Network Operational Costs Switch and Router Maintenance and Support Costs Baseline for all network operating systems 54%* Lower with Junos (A “planned events” category) Switch and Router Deployment Time Costs 25%* Lower with Junos (The “adding infrastructure” task) Unplanned Switch and Router Events Resolution Costs 40%* Lower with Junos (The time needed to resolve unplanned network events) Multiple network operating systems diminish e�ciency 3 Overall Switch and Router Network Operations Costs 41%* Lower with Junos (The combined total savings associated with planned, unplanned, planning and provisioning, and adding infrastructure tasks) Typically deployed at the access layer in a data center, Juniper Networks EX4200 Ethernet Switch provides chassisclass, high availability features, and high-performance throughput in a pay as you grow 1 rack unit (1 U) switch. Depending on the size of the data center, the EX4200 may also be deployed at the aggregation layer. Offering flexible cabling options, the EX4200 can be located at the top of a rack or end of a row. There are several different port configurations available with each EX4200 switch, providing up to 48 wire-speed, non-blocking, 10/100/1000 ports with full or partial Power over Ethernet (PoE). Despite its small size, this high-performance switch also offers multiple GbE or 10Gbe uplinks to the core, eliminating the need for an aggregation layer. And because of its small size, it takes less space, requires less power and cooling, and it costs less to deploy and maintain sparing. Up to 10 EX4200 line switches can be connected, configured, and managed as one single logical device through built-in Virtual Chassis technology. The actual number deployed in a single Virtual Chassis instance depends upon the physical layout of your data center and the nature of your traffic. Connected via a 128 Gbps backplane, a Virtual Chassis can be comprised of EX4200 switches within a rack or row, or it can use a 10GbE connection anywhere within a data center or across data centers up to 40 km apart. 3 “The Total Economic Impact of Junos Network Operating Systems”, a commissioned study conducted by Forrester Consulting on behalf of Juniper Networks, February 2009 Copyright © 2012, Juniper Networks, Inc. 19
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Data Center LAN Migration Guide - Juniper Networks

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