Cisco SM-X Layer 2/3 EtherSwitch Service Module - Switch - Managed - 16 X 10/100/1000 (PoE+) - Plug-in Module - PoE+ - Refurbished - SM-X-ES3-16-P-RF

• Advanced PoE support
  PoE removes the need for wall power to each PoE-enabled device and eliminates the cost for additional electrical cabling and circuits that would otherwise be necessary in IP phone and wireless LAN (WLAN) deployments. Although PoE has been employed for more than a decade, it is still an evolving technology.
• IEEE 802.3at Power over Ethernet
  In addition to 802.3af PoE, the Cisco Enhanced EtherSwitch Service Modules support PoE+ (IEEE 802.3at standard), which provides up to 30W of power per port. The Cisco SM-X EtherSwitch Service Modules can thereby provide a lower TCO for deployments that incorporate Cisco IP Phones, Cisco Aironet wireless LAN access points, or any IEEE 802.3af-compliant end device. PoE+ enabled ports can, in addition to PoE+ 30 W, also be used to deliver power for current PoE and enhanced ePoE solutions.

The Cisco SM-X Layer2/3 EtherSwitch Service Module helps ensure maximum availability, high performance, ease of upgrade, and expandability. The modules have their own processors, switching engines, and flash memory that run independently of host router resources, helping ensure maximum concurrent switching and routing performance as well as providing integrated PoE+, security, and increased ease of management.
As users attempt network access through the Cisco Enhanced EtherSwitch Service Module, the module can use IEEE 802.1x and a large number of Cisco 802.1x extensions to validate the credentials of the end device and place the user in the appropriate VLAN or Cisco TrustSec group. As the end-user data traverses between the switch module and other network entities or between buildings, this traffic can be encrypted at Layer 2 using MACsec.