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The NAC API provides a method of inputting configuration into the NAC using a Perl script instead of typing it in manually. This is really nice if you have a large number of items to add or if you want to automate a particular process. One example would be to…

Here is a recap of articles I posted in April to my blog at Netcordia: “Network SLA Methodologies“ discusses the the types of data needed for SLA calculations. It also [...]

My prior post Applied Infrastructure blog under

Scott Hogg just did a Applied Infrastructure blog under

I have an occasional need for a network microscope.  You know the situation — someone contacts you with the story that the network is slow.  My vision of a network [...]

I attended VoiceCon Orlando 2009 this week and had the privilege of participating in three events: Teaching a half-day tutorial on “VoIP Troubleshooting, Monitoring, and Metrics” in which I covered [...]

I thought I’d post a summary of some BGP questions and follow up responses from a recent group e-mail discussion. Query 1: If you filter routes inbound from a neighbor using [...]

If you’ve just manually configured SSL on a Cisco Unity server, it’s a good idea to verify that PCA still operates as expected.  If you can still access the page [...]

Maybe you missed the articles I made in March to my blog at Netcordia: “NANOG Posting on Configuration Analysis“ adds to a recent exchange on the NANOG mailing list about [...]

When deploying Cisco Unified Communications Manager (CUCM) and Cisco Unified Presence (CUPS) one of the design objectives should be to architect a solution that adds dynamic fault tolerance.  One can [...]

As Cisco has moved away from Windows based platforms and to a custom built Linux "appliance" model the tools available to the Cisco UC administrator have changed drastically.  One tool that gives tremendous power to the administrator is the network capture utility on the Cisco UC appliance. The following is…

Networks use the same devices in many different roles, so configuration validation based on device type isn’t sufficient. There are some configuration things that can be checked across all the [...]