hello I tried to change image from cat4500e-universal.SPA.03.04.02.SG.151-2.SG2.bin to cat4500e-universalk9.SPA.03.04.02.SG.151-2.SG2.bin try with ISSU or FSU but always have the same pb standby reboot whith the new version but at the end of process choose to reset again because , propably, of version or licence-level mismatch ? below logs from the standby and active console any idea ? thanks in advance regards, Marc   standby : Initializing as Virtual Switch STANDBY processor *Apr 28 09:03:56.601: %C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 2 has failed  or been turned off *Apr 28 09:04:44.522: %C4K_TRANSCEIVERMAN-3-INCOMPATIBLE: Port 61: New transceiver ( speed 0Mbps) is incompatible with this module *Apr 28 09:04:48.915: %C4K_IOSINTF-5-LMPHWSESSIONSTATE: Lmp HW session UP on slot 1 port 2. *Apr 28 09:04:48.928: %C4K_IOSINTF-5-LMPHWSESSIONSTATE: Lmp HW session UP on slot 1 port 1. *Apr 28 09:05:04.918: %VSLP-5-VSL_UP:  Ready for control traffic *Apr 28 09:05:09.938: %VSLP-5-RRP_ROLE_RESOLVED: Role resolved as STANDBY by VSLP *Apr 28 09:05:46.308: %C4K_REDUNDANCY-2-IOS_VERSION_CHECK_FAIL: STANDBY:IOS version mismatch. Active supervisor version is 15.1(2)SG2 (cat4500e-UNIVERSAL-M). Standby su pervisor version is 15.1(2)SG2 (cat4500e-UNIVERSALK9-M). Redundancy feature may not work as expected. *Apr 28 09:05:46.308: %C4K_REDUNDANCY-2-NON_SYMMETRICAL_REDUNDANT_SYSTEM: STANDBY:ST ANDBY supervisor will operate in fallback redundancy mode rpr. *Apr 28 09:05:49.351: %C4K_REDUNDANCY-3-COMMUNICATION: STANDBY:Communication with th e peer Supervisor has been established *Apr 28 09:05:50.238: %C4K_REDUNDANCY-2-VS_REBOOT_ON_RPR_FALLBACK: STANDBY:Superviso r in virtual-switch configuration cannot operate in redundancy mode RPR, will be res et *Apr 28 09:05:50.434: %RF-5-RF_RELOAD: STANDBY:Self Reload. Reason: Virtual-switch f allback to RPR *Apr 28 09:05:50.446: %VSLP-3-VSLP_LMP_FAIL_REASON: STANDBY: 1/2 : Link down *Apr 28 09:05:50.458: %VSLP-3-VSLP_LMP_FAIL_REASON: STANDBY: 1/1 : Link down *Apr 28 09:05:50.458: %VSLP-2-VSL_DOWN: STANDBY:  All VSL links went down while swit ch is in Standby role *Apr 28 09:05:50.458: %C4K_REDUNDANCY-3-NOT_READY_FOR_SWITCHOVER: STANDBY:The active  Supervisor failed but standby supervisor cannot initiate Switchover activity. Reset ting standby Supervisor. *Apr 28 09:05:50.498: %RF-5-RF_RELOAD: STANDBY:Self Reload. Reason: Standby not read y for switchover *Apr 28 09:05:50.650: %SYS-5-RELOAD: STANDBY:Reload requested by Platform redundancy  manager. Reload Reason: Virtual-switch fallback to RPR. Switchover activity can not be initiated. Resetting... Please stand by while rebooting the system...                                              Restarting system. active : Apr 28 09:04:48.918: %C4K_IOSINTF-5-LMPHWSESSIONSTATE: Lmp HW session UP on slot  11 port 2. Apr 28 09:04:48.942: %C4K_IOSINTF-5-LMPHWSESSIONSTATE: Lmp HW session UP on slot  11 port 1. Apr 28 09:05:04.928: %VSLP-5-VSL_UP:  Ready for control traffic Initializing as Virtual Switch ACTIVE processor Apr 28 09:05:08.929: %VSLP-5-RRP_ROLE_RESOLVED: Role resolved as ACTIVE  by VSLP Apr 28 09:05:08.929: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/1 joined port -channel Port-channel20 Apr 28 09:05:08.942: %EC-5-BUNDLE: Interface TenGigabitEthernet2/1/2 joined port -channel Port-channel20 Apr 28 09:05:09.906: %C4K_REDUNDANCY-6-DUPLEX_MODE: The peer Supervisor has been  detected Apr 28 09:05:31.337: %SW_LEVEL-6-RESULT: Operational redundancy mode is UNKNOWN,  due to software license-level mismatch at ACTIVE and STANDBY. Software Level on  Active: entservices; on Standby: entservices. Apr 28 09:05:49.356: %C4K_REDUNDANCY-2-IOS_VERSION_CHECK_FAIL: IOS version misma tch. Active supervisor version is 15.1(2)SG2 (cat4500e-UNIVERSAL-M). Standby sup ervisor version is 15.1(2)SG2 (cat4500e-UNIVERSALK9-M). Redundancy feature may n ot work as expected. Apr 28 09:05:49.360: %C4K_REDUNDANCY-6-MODE: ACTIVE supervisor initializing for rpr mode Apr 28 09:05:49.922: %C4K_REDUNDANCY-3-COMMUNICATION: Communication with the pee r Supervisor has been established Apr 28 09:05:50.562: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/2 left the port-channel Port-channel20 Apr 28 09:05:50.574: %VSLP-3-VSLP_LMP_FAIL_REASON: Te2/1/2: Link down Apr 28 09:05:50.582: %EC-5-UNBUNDLE: Interface TenGigabitEthernet2/1/1 left the port-channel Port-channel20 Apr 28 09:05:50.594: %VSLP-3-VSLP_LMP_FAIL_REASON: Te2/1/1: Link down Apr 28 09:05:50.594: %VSLP-2-VSL_DOWN:   All VSL links went down while switch is  in ACTIVE role Apr 28 09:05:50.925: %C4K_REDUNDANCY-3-COMMUNICATION: Communication with the pee r Supervisor has been lost Apr 28 09:05:50.938: %C4K_REDUNDANCY-3-SIMPLEX_   ... View more