This software release is part of the train, designed specifically for the Catalyst 4500 Supervisor Engine 8-E. It is a mature, Extended Maintenance (EM) release.
48-port PoE modules blinked amber, then green, as the firmware synchronized. cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin
: Features like Stateful Switchover (SSO) and Resilient Ethernet Protocol (REP). This software release is part of the train,
: Supports In-Service Software Upgrade (ISSU) , allowing for software updates with less than 200 milliseconds of traffic disruption, and Stateful Switchover (SSO) for redundancy. cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin
(or compatible 8-series supervisors). These supervisors are the "brains" of the switch, handling high-density aggregation and advanced features like Virtual Switching System (VSS). 2. The Feature Set: universalk9