• The Cisco Nexus switches allow a very high level of bandwidth connectivity positioned as data center switches. The Nexus switches do not support the same features and flexibility as local area network (LAN) based switches,...

  • It’s your day, how are you going to celebrate? Yes, if you’re a System Administrator you should take a bow because today is System Administrator Appreciation Day! You could convince the users you support to...

  • In our last post we discussed the basics of Router Information Protocol (RIP) such as the metric and the timers.  We even saw a few examples of debug and show commands to understand some of the processes that occur behind the curtain with RIP.  However, for the CCNA exam you must also have good grasp …   Read More

  • RIP is a protocol that is used for routing IP networks. It was designed in the early 1980’s for communication between gateways (computers with two NIC’s). It is the oldest routing protocol used by the network industry and is considered by many to be inefficient or border-line obsolete.  However for CCNA students it important to …   Read More

  • Starting with Cisco Unified Communications Manager (CUCM) 6.0 unified communications (UC) deployments with less than 575 phones and less than 500 voice mail boxes have the choice of using Cisco Unified Communications Manager Business Edition...

  • In Part 1 of this series, we discussed static NAT. While static NAT works, since it uses manually constructed “one-to-one” translations, it’s not scalable. For example, translating all of the legal host addresses on the 10.1.2.0/24 subnet would require 254 lines. And if we were dealing with the entire 10.0.0.0/8 network, covering all possible addresses …   Read More

  • When the Client Access Role (CAS) was first introduced with Exchange 2007 it was commonly misunderstood as the new “Front-end” server for Exchange. Not only was this not the case, we have come to understand...

  • Unified Communications (UC) may have different meanings depending on who you ask, but the industry has now established what exactly the makeup of UC is, and the minimal applications  that have work together. All vendors...

  • In my next few posts, we’re going to discuss NAT and PAT. No, they’re not brother and sister, they’re not even cousins. They are Network Address Translation (NAT) and Port Address Translation (PAT). It’s common...

  • Have you ever noticed that some topics have more questions than others on an MCP exam? Well, it is done on purpose. In your daily work, some tasks are more important or are done more...