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 · 12-28-2025

1. CheetahOS APs on 17.3.X, 17.6.X, 17.9.X and up to 17.12.3 must reboot before the WLC upgrades because of CSCwe15172, CSCwe97901, CSCwm08044, CSCwm07499, CSCwm72142, CSCwo05017. Failure to follow this warning means that the affected APs will cons...

Leo Laohoo · 12-24-2025

C6800-8P10G requires Sup2T supervisor card (and nothing less) but will work in a 6500E chassis.

Leo Laohoo · 12-23-2025

@CWNE414 wrote:What order are you doing things in with a single reboot? A reboot "costs" about 6 minutes. If I follow the Cisco guidelines, I would need to have two (2) reboots. I have been doing one reboot since c2690 router and c2800/c3800 route...

Leo Laohoo · 12-23-2025

Anyone can download firmware for all Catalyst 9k switches (for FREE!) even if the CCO does not have any valid Service Contract attached. Please read: Cisco Catalyst IOS Software Update Program for Cisco Catalyst 9200/X, 9300/X, 9400/X, 9500/X and 9...

Leo Laohoo · 12-22-2025

@DJX995 wrote: Product Identifier (PID) = SFP-10G-T-X Officially, Cisco-branded SFP-10G-T is not supported on the 9800. Try 3rd party optics from FS.

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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: 9800-40 HA Upgrade from 17.3.7 to 17.9.7 with Ap 3700

Re: Catalyst 6500-E Series Chassis compatible line cards help

Re: Why upgrade Rommon in c9800

Re: Image need

Re: TRANSCEIVER-3-NOT_ALLOWED_ONLINE