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“Holy Crap!” exclaimed David from the depths of the cube farm, “We just failed the PCI audit! Check out the email from Tony.”  Tony is the CIO.  David is one [...]

I’ve been reading up heavily on the various aspects of Cisco Nexus and Data Center technology. While I am constitutionally unable to cheerlead, I must say I’m pretty impressed with [...]

What's in a name really?  For Cisco Unified Communications Manager the hostname is critical.  When performing an upgrade  to CUCM 6.1 using DMA and changing the host name/IP address of the publisher node, the system services may become unstable and will not stay active.  Issues are also seen where services…

When the OS Install Software web interface appears to hang and not process requests to start an upgrade you may need to execute it from the command shell.  I experienced [...]

I came across an issue working on a script enhancement for a customer where  I needed to  compare two time/date variables and evaluate the seconds that have expired between them.  [...]

Probably the only thing I miss from Call Manager 4.x (and 3.3 for that matter) is devicelistx.asp.  It was a simple tool provided by Cisco that had a lot of [...]

A few weeks ago in Network SLAs – Which one to use? I described SLAs based on device reachabilty or uptime.  Today’s topic is about SLAs based on network QoS. [...]

Here is a recap of articles I posted in May to my blog at Netcordia: “How’s the network running? More on SLAs” discusses Service Level Agreements (SLAs) based on network [...]

I’ve been doing more consulting work and am surprised by the number of organizations that don’t use anti-spoofing filters within their networks.  An anti-spoofing filter is placed on the input [...]

I’ve written before in Applied Infrastructure blog under

It is configuration checking time.  Do you know where all your devices are?  How do you know that there’s not a rogue device lurking in your network?   How do you [...]

NetCraftsmen provides a UC Optimization service where we will perform, among other things, a general health check on an existing cluster.  Some times this is done as part of a routine optimization task.  As of late, we perform this task as part of upgrade preparations. Anyone who has run CallManager…