About Leo Laohoo

Leo Laohoo · 12-20-2022

FN - 72520 - Some Cisco DNA Center Appliances Shipped Between September 2022 and November 2022 Have Incorrect Firmware Installed - BIOS/Firmware Upgrade Recommended

Leo Laohoo · 10-28-2022

Read the Release Notes very carefully and go with 17.6.4.

Leo Laohoo · 11-17-2021

Cisco 3850: IOS-XE/Firmware Upgrade (Install Mode) NOTE: This procedure is aimed at Cisco 3850 switch ONLY.IOS-XE Bundle Mode is not covered. 9300, 9500 (vanilla & high-performance), ISR 1k, ISR 4k and ASR is not covered. Router(s) & switch(es) r...

Leo Laohoo · 06-30-2021

NotesA Word from our Sponsors:Introduction:Section 1: General ProcedureSection 2: ROMMON UpgradeSection 3: Cellular Modem Firmware UpgradeSection 4: GOTCHA Notes This procedure is aimed at Cisco ISR 1k, ISR 4k and ASR 1k router ONLY.IOS-XE Bundle Mo...

Leo Laohoo · 12-22-2020

Product Overview: Cisco Prime Infrastructure 3.9 Release Notes: Cisco Prime Infrastructure 3.9 Software Download: Cisco Prime Infrastructure 3.9 Oracle Patch: Cisco Prime Infrastructure 3.9

Leo Laohoo · 08-28-2026

@Dustin Anderson This only appears when using DNAC. We have upgraded about >300 stacks manually and we have never encountered bug.

Leo Laohoo · 08-28-2026

@Palani Mohan The config of the switch was saved before the upgrade. Of the 30 switches upgraded that night, only 4 switch members from 4 stacks lost their config. All the rest were fine. This behaviour is difficult to catch, this I acknowledge....

Leo Laohoo · 08-28-2026

@aleabrahao wrote:I've never seen any Cisco documentation, release note, caveat, or bug ID describing loss of interface configuration on stack members after a SWIM upgrade from 17.15.5 to 17.15.6. If the behaviour only happened to us, I can discount ...

Leo Laohoo · 08-28-2026

@Palani Mohan wrote:If not, consider including show run and show start, to catch the diffs very early and proactively. That is not possible. A switch would not reload if the config was not saved. @Palani Mohan wrote:show ver and show inv along w...

Leo Laohoo · 08-28-2026

@julian.bendix wrote:Are you saying xFSU is a bad thing in general and no one should try to use it? I have maintained the position that if-and-when FSU/eFSU/xFSU works, it works beautifully. But when it does not work, run for the hills. The latest ...

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FN-72520 -Some Cisco DNA Center Appliances Have Incorrect Firmware

Re: Catalyst 9606r software version election

Cisco 3850: IOS-XE/Firmware Upgrade

Cisco ISR & ASR 1k Routers: IOS-XE/Firmware Upgrade (Install Mode)

Coming to a store near you: Cisco Prime Infrastructure 3.9

Re: Cisco 9300 switches loosing port configuration after upgrading usi

Re: Cisco 9300 switches loosing port configuration after upgrading usi

Re: Cisco 9300 switches loosing port configuration after upgrading usi

Re: Cisco 9300 switches loosing port configuration after upgrading usi

Re: Different results when running xFSU ELIGIBLE