Trying to do a softwareware upgrade for callmanager system version 6.0.1.3000-7 using the GUI and through the ftp server but each time it fails and "Error on this page " is displayed on the browser.When I click on the error link i get the info below...

Site A and Site B have hosts belong to the same vlan.I am trying t build a GRE tunnel to get these host communicate.So far here is what I have in mind.See below. IS there anything I am mixing up.Comments or suggestions will be highly apreciated.I tra...

Is it possible to combine L2TP and GRE?ie using using a switch port configured with L2TP as the source interface for GRE and so that i have a L2TP tunnel built under a GRE tunnel so that I transmit vlans over the internet?

When using GRE tunnel for site A to site B connections, is it always necessary that the differents sites belong to separate network segments.Here is my scenario.I have two sites which were originally connected by trunk links.Both sites have identica...

Hi all,I am searching for any links and interesting documents if possible with configuration examples on ITP.Any link will be appreciated.