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Spanning Tree Protocol (STP) is dead, or at least it should be. It’s too slow to converge when there’s a change, and it causes issues with performance because there is only one forwarding path. It was developed in 1985 by Radia Perlman at Digital Equipment Corporation to allow for redundant paths within a Layer 2 topology, which was great in 1985. In fact, it was huge! So much so, that it was later standardized by the IEEE as 802.1D, and we’ve been living with it ever since.

David Wilson discusses on how your digital footprint could become a security risk espcially with how much of your personal information is online. Learn more.

The Internet is not a safe place. We see that more than ever with the security breaches of businesses and individuals in the news on a daily basis. As Internet citizens, we need to take our protection into our own hands, as obviously most online services are not doing their best to protect us.

License provisioning has always been a bit of a challenge in the CUCM environment. Prior to CUCM v9.0, licensing was managed on a per-cluster basis with each cluster requiring its own license files that were tied to the media access control (MAC) address of the cluster’s publisher. This approach to license management was limiting in the fact that one cluster might have unused licenses while another cluster may be at its limit and sharing between clusters was not possible.

Pen testers beware. Whether you believe you know and understand all the potential legal issues, read on. First of all, a penetration test or “pen test” is a method that’s used to evaluate the security and/or vulnerabilities in a network. This test is normally conducted externally wherein the tester is attempting to hack a network or computer. Breaking into computers and networks is illegal under the Computer Fraud and Abuse Act (CFAA), and depending on your activities and other factors, other federal laws and state laws may be broken.

Business Continuity and Disaster Recovery (BC/DR) planning is the process of developing the plans, processes and procedures to respond to the range of incidents. We start with understanding the essential functions of an organization, called Business Impact Analysis (BIA). In life, we set the same priorities: protection of family and friends, shelter, food and water and other life-giving essentials.

It’s not uncommon for different teams to be managing the virtual switch and physical switch configurations. This can make it very difficult to troubleshoot unless each configuration parameter has been gone through manually. There have been enhancements to the vSphere Distributed Switch over the past few years to address these operational challenges.

In this blog series, we'll get you up to speed on using the key tools listed in the PMBOK® Guide, including Decision Tree Diagrams.

Implementing business analysis (BA) in organizations needs to be done in a well-planned process. The three steps are contingent on the BA maturity of the organization, its vision for how BA will be used and the degree of executive sponsorship.

One size does not always fit all. At times there’s a need to run more than one routing protocol and have more than one routing domain: multivendor shops, migration from one protocol to another, scalability issues of a single protocol, political or personal preference, production versus test networks, mergers, and acquisitions.