Cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin _best_ -

Upgrading a modular enterprise switch to cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin requires structural verification steps to prevent control-plane crashes. 1. ROMMON and Pre-requisites Verification

When you boot cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin , your switch defaults to functionality. To unlock BGP, OSPF for IPv6, EIGRP Stub, or advanced QoS, you must activate a license: cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin

If your 4500 chassis is running this universalk9 image, you are on borrowed time. Plan to migrate to: OSPF for IPv6