Hi everyone，I have a problem about register smart license in ISR4331 with IOS17.3.4.I cant use the command"license samrt register idtoken <token>"，this command is unavailable，so how should I to do？Is there any other ways to complete it？ISR4331#licens...

I have an ISR4331 running IOS 17.3.4a and Rommon 17.6.2. Now I want to downgrade it to the 16.9 version, but I downloaded several 16.9 IOS, which do not match when verifying the hash value. What's the reason?Should I need to downgrade the rommon vers...

As we know，there are so many models of Cisco APs，such as C9105AXI-A、C9105AXI-B、C9105AXI-C、C9105AXI-D and so on.I know different regulatory domain stand for different bands and channels，every country or area has it's domain. But I still have some doub...

I have some question about Cisco Stack.1.Do I need the same model, license and IOS software versions to stack between 9300 sku？2.How many C9606R can I stack？3.Can I do virtual stacking on channelports.For example，if I make 8 ports of the same type on...

After I upgrade new firmware(ftd-fp2k.6.6.7-223.zip),I can not log in firepower with username and password default.Are there somebody can help me?FTD loading so long and after that it reboot ,reboot so many times.Now I cannot log in to the device. Wh...