This guide will help you https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/software/release/16-9/configuration_guide/sys_mgmt/b_169_sys_mgmt_9400_cg/recover_from_corrupt_or_missing_file_image_or_in_rommon_mode.pdf ... View more

Hi, with your explanation, first thing came to my mind is bit odd. this is actually about company security policy violation in my case. to add windows routes, users need to have admin privilege. but for users in company we are not allowed admin permissions. may be different scenario for you situation. open for suggestions. :) ... View more

Hi Boss, 1 .according to your details, you can use below access point. don't worry about controller and you can set the country after the purchase. but for APs you have to buy exact matching model to country regulatory domain. for U.S it is -B. so APs SKU will be AIR-AP3802I-B-K9. use https://www.cisco.com/c/dam/assets/prod/wireless/wireless-compliance-tool/index.html to find exact country for you 2. mobility express is coming with inbuilt controller with less features in side of AP. that can use for basic wireless controller configuration other than dedicated controller. also that can support 25 APs by default per mobility express controller. 3. when you selecting AP count, better do a site survey to findout exact AP count you need to cover the area for given number of devices. good luck ... View more

hi, Update 1 - normally, you cannot duplicate L3 connectivity with IP addresses unless you use NAT. in this case you can use NAT for each device. this is only suggestion.    you need separate router's for each devices and create Virtual NAT range (different networks which are not available on your network) for each device.  connect all routers to 1 another router and do correct routing. in this case you need to have different IP range for main PC too. if you need to have same range with devices, you can do another virtual NAT in main router too. this is possible technically, but not feasible for non branch network   Update 2-  also you may be able to use VRF with 1 router. needs some good guidance. because i am not very good in VRF :)     ... View more

Hi,   this is bit strange situation. i have few clarifications, 1 - how your application identifies each device separately if using same IP? (may be that is not a concern) 2 - what is the IP address of communicating common PC? is it in same network?     ... View more