I have  tried to format my flash to install new IOS by using this command myrouter#format flash:  thenI don,t know what is happen when I restart my router the out put is as the following €€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€...

Hi....I had 2 Distribution Layer 3 Switch 3750 Series one of them is work as server mode the other is transparent mode there are 3 vlans, I had one internet connection by Linksys router (ADSL), So please advise what the suitable configuration of Swit...

I bought news cisco routers 1841, the output of show version command is :Router#show version Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 15.0(1)M4, RELEASE SOFTWARE (fc1)Technical Support: http://www.cisco.com/techsupportCopyright (c)...

Please I need to know what I will do my CCNP cert was expired.