The Cisco 2520 Connected Grid Switch (CGS 2520) is a rugged Ethernet switch designed for use in transmission & distribution (T&D) power substations. The CGS 2520 uses Cisco IOS software, which is the operating system powering millions of Cisco switches & routers worldwide. Rugged design for substation compliance Compliant with IEEE 1613 & IEC-61850-3 substation standards for rugged design. Convection cooled with no moving parts or fans for maximum reliability & reduced network outages. Network security Advanced Cisco IOS software features such as 802.1x, Layer 2-Layer 4 access control lists (ACLs), port security, protected port/private VLAN, UNI/ENI default control traffic shut down & configuration file security to prevent unauthorized network access & reduce operational costs of securing the network. High availability & redundancy Advanced Cisco IOS software features such as REP & Flexlink provide fast re-convergence in ring & hub-&-spoke topologies, minimizing network downtime & associated costs. Field-replaceable components such as power supplies & SFPs reduce redeployment time. Ease of use Intuitive graphical user interface (GUI) in Cisco configuration professional simplifies configuration of switches & reduces training time & costs. Utility focused enhancements have been added to further increase ease of use. Smartport templates provide one-touch global & port-level macros to simplify switch deployments. Energy efficiency The CGS 2520 architecture provides energy-saving features that include high efficiency power supplies are provided with each platform & no fans which reduces overall power consumption. Rugged design for T&D power substations, including compliance with IEC-61850-3 & IEEE 1613 specifications for extended environmental, shock/vibration, & surge ratings Compact 1RU (rack unit), 19" network rack mountable switch with support for reverse cabling Dual LEDs on front & back of switch to provide ease of monitoring & troubleshooting Easy setup & management using the Cisco configuration professional graphical user interface & supporting management tools Easy switch replacement with the connected grid swap drive feature High availability, deterministic Qo S behavior, & reliable security using Cisco IOS software Smartport templates that implement recommended software configurations for T&D substation applications at the touch of a button Hardware support for IEEE1588v 2, a precision timing protocol with nanosecond-level precision for precise timing applications enhanced ring & hub-&-spoke resiliency with the support of Resilient Ethernet Protocol (REP) & Flexlink Transparent IT integration with the support of Layer 3 routing protocols Hardware-based security with IEEE 802.1AR that cryptographically binds security credentials to the CGS 2520 during manufacturing