By Andrew Stibbards | 1 Min Read | 27 Min Video Technical Level: Beginner Cisco Umbrella is a relatively untouched subject in Cisco Security courses. SLI instructor, Andrew Stibbards, explains what Cisco Umbrella is, how
6 Min Read What is Sustainable Technology? Sustainable, or green, technology is defined as, “technology that takes into account the long and short-term impact an invention has on the environment.” It “meets the needs of
By: Tuan Nguyen | 14 Min Read Technical Level: Advanced Downloadable PDF: Migration from IPv4 to IPv6 The current version of the Internet Protocol IPv4 originally developed in the 1970s and officially published in 1981
By John Meersma | 3 Min Read Technical Level: Beginner Downloadable PDF: Resetting or Restoring Cisco IP Phones Sometimes troubleshooting for Cisco IP phones can be challenging, there can be a number of reasons why an
By Andrew Stibbards | 7 Min Read Technical Level: Beginner Downloadable PDF: Layer 3 Redundancy with HSRP Hot Standby Router Protocol (HSRP) is a Cisco proprietary protocol that allows several routers or multilayer switches to appear
By John Meersma | 8 Min Read | 8 Min video Technical Level: Intermediate SLI instructor, John Meersma, takes you through step-by-step instructions on how to update phone load files on CUCM and test them
By Tuan Nguyen | 3 Min Read | Technical Level: Intermediate Need help accessing a used router? Or perhaps you’ve just misplaced the “Enable Password” and don’t have access to “Privileged EXEC mode”? No worries!