Cat4500e-universalk9.spa.03.11.04.e.152-7.e4.bin _verified_ | PRO TUTORIAL |

Support for Cisco TrustSec, IEEE 802.1AE (MACsec) encryption, and robust DHCP snooping/Dynamic ARP Inspection.

For older Supervisor Engines, this version provides a modern feature set without overutilizing onboard DRAM or Flash memory. cat4500e-universalk9.spa.03.11.04.e.152-7.e4.bin

: The Catalyst 4500-X Series , which provides high-density 10G aggregation in a small footprint. Key Features and Functionality Support for Cisco TrustSec, IEEE 802

This stands for Shared Port Adapter . It signifies that this IOS is designed to support the SPA interface modules and the specific architecture of the Supervisor 6-E/7-E linecards. It differentiates the image from the older "classic" IOS images for Sup II-Plus or Sup V. Support for Cisco TrustSec