interface range gi1/1/21 - 24 no storm-control broadcast enable no storm-control broadcast level no storm-control include-multicast no port security no port security max no port security mode spanning-tree bpduguard disable switchport mode trunk cdp enable spanning-tree portfast auto no flowcontrol negotiation no description switchport trunk allowed vlan remove all
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the only way i would recommend is to announce a maintanence window and do a proper password recovery to get a new password / access to the config ...
with some practice the whole process including reboot etc takes like 15-20 minutes IMO...
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check the priorities and mac adresses of all devices, maybe something gets mixed up because of "simulator issues" and a proper election of the root bridge fails
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Regarding the config: it usually should sustain as long as you properly safe it and dont do a "wr er". just do the update by coping the new image over there and chaging the boot variable or by setting the conf reg to boot the first (and maybe only one available image) in the flash and NOT IGNORING the startup config :)
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h team, i got a problem with my stealthwatch connected to my ise via pxgrid. i followed every step of the " Deploying Cisco Stealthwatch 6.9 with Cisco Identity Services Engine (ISE) 2.2 using Cisco Platform Exchange Grid (pxGrid)" Guide from John Eppich and used the ISE internal CA. My ISE and Stealthwatch are connected as you can see in the screenshots right here: thanks in advance!
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maybe your downloaded file is corrupted, have you looked at the checksumms? try to download it again..i also would try (if possible) a manual upgrade via cli.
regards,
Andreas
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