UC Corner

To avoid turning this blog into a book, I assume the following: You are already using GNS3 and know how to build basic routing/switching l...

20 years ago, when I was working on my CCIE R/S, I had to borrow a Cisco 2501 router from a friend's company during the weekend and retu...

Introduction  Cisco CUCM (CallManager)'s clumsy web GUI has earned its reputation.  :)  It might be OK for a small-to-medium business ...

My company has a large (and not very well managed) network.  Different VLANs have different "ip helper-address" (DHCP) settings.  ...

Spreadsheet (e.g. Microsoft Excel) is a very powerful tool for network engineers.  I use spreadsheet to build network configuration scripts,...

The Hunt I was trying to find a packet generator for my customer.  Customer wants to run the packet generator on Windows 7 (or Windows 10...

Cisco has been persuading people migrate ACS to ISE.  However one of the hold-backs is ISE's lack of TACACS support.  ISE 2.0 finall...