Hi, We have 3 buildings in a campus.  We occupy building 1 and 3.  Building 2 belongs to someone else.  However, building 2 switch connects both building 1 and 3.  How do I create a point-to-point secure tunnel between the two 3560v2 layer 2 switches in building 1 and 3 thru the transit switch in building 2 in a layer 2 environment? QinQ does not meet the requirement because we want to prevent man-in-the-middle access from the transit switch in Building 2. Thanks! Kevin ... View more

Hi, I hope someone can find a solution for me. We have 3 buildings in a campus.  We occupy building 1 and 3.  Building 2 belongs to someone else.  However, building 2 switch connects both building 1 and building 3.  How do I create a point-to-point secure tunnel between the two 3560v2 switches in building 1 and 3 thru building 2 in a layer 2 environment? Thanks! Kevin ... View more

Hi, We just received some 2951 routers and it all shows 2GB of DRAM from show version even though there are 4GB of DRAM installed, verified physically and also from show platform command.  So my question is, why is it showing 2GB on show version and not 4GB?  My IOS version is 15.1(4)M4. Thanks ... View more

Hi Cisco VoIP experts, My user called me and told me that he can't make any outbound call.  When I login to the voice gateway (ISR 2811), I noticed the PRI was bouncing couple times 30 minutes ago according to show syslog.  Show isdn status and show ccm-manager all shows normal status.  After resetting the gateway from CallManager 4.3, I am able to make outbound call again. The customer asks if it can be avoided in the future and if there is a tool that can proactively notify IT about unable to make inbound or outbound call.  I am thinking some kind of PRI probe or robo calls but I don't know exactly what. Thanks. ... View more