Summary:Mapping the OSI model to the TCP/IP model is a vital skill for CCNA exam success.  Learn the details of both models from Chris Bryant, CCIE #12933. Keywords:Ccna, exam, certification, tcp, ip, model, networking, osi, session, transport, application, network, mapping, map, free, tutorial Article Body:The OSI model is the model that most networking personnel are familiar with, but to...

Summary: Learn how to recover from a lost password on a Cisco router from Chris Bryant, CCIE #12933. Keywords: cisco, password, recovery, ccna, exam, tutorial, configuration, register, 2500, router, enable, ccie Article Body: It might happen on your CCNA exam, it might happen on your production network - but sooner or later, you're going to have to perform password recovery on a Cisco router or...

  Summary:Knowing the textbook definition of split horizon isn't enough.  You've got to know how to apply it and disable it.  Learn the details from Chris Bryant, CCIE #12933. Keywords:Cisco,ccna, pass, exam, split, horizon, eigrp, rip, igrp, interface, routing, update, in, out, same, disable, no, ip, Bryant, advantage, 12933, chris Article Body:For CCNA exam success, you had...

Summary:If TFTP isn't secure, why use it?  Learn the details for your CCNA and real-world success from Chris Bryant, CCIE #12933. Keywords:ccna, free, tutorial, tftp, router, copy, ios, image, pass, icnd, run, start, bryant, advantage Article Body:One of the first things you do when you start studying for the CCNA exam is memorizing a list of port numbers and the protocols that run on...

Summary:Reinforce your VLAN and switching theory knowledge with this case study from Chris Bryant, CCIE #12933. Keywords:cisco, ccna, vlan, ping, exam, pass, tutorial, router, switch, Bryant, advantage, chris, 12933, ccie, ccnp, bsci Article Body:In this CCNA case study, we'll take some basic switching and trunking theory and put it into action.  We have two routers (R2 and R3) along with...

Summary: Chris Bryant, CCIE #12933, lists 10 ISIS details you must know in order to earn your CCNP. Keywords: ccnp, certification, cisco, isis, level, router, end, system, iis, hello, type, adjacency, level-1 Article Body: Earning your CCNP certification and passing the BSCI exam depends on knowing the details of many Cisco technologies, ISIS chief among them. To help you prepare for exam...

  Summary:Learn how and why BPDU Skew Detection works to prevent unnecessary STP recalculations from Chris Bryant, CCIE #12933. Keywords:ccnp, bcmsn, bpdu, skew, detection, exam, pass, certification, switch, cisco, stp, recalculation Article Body:You may look at that feature's name and think, "What is a BPDU Skew, and why do I want to detect it?"  What we're actually attempting to...

  Summary:The priority command in HSRP seems simple enough, but there's a trap there for you that can cost you important exam points.  Learn how to do this properly and pass the CCNP with Chris Bryant, CCIE #12933. Keywords:cisco, ccnp, certification, hsrp, standby, active, priority, preempt, pass, bcmsn, exam, ccie, 12933 Article Body:To pass the BCMSN exam and earn your CCNP...

Summary:Learn how CGMP operates and how CGMP is configured in this BCMSN exam tutorial from Chris Bryant, CCIE #12933. Keywords:cisco, ccnp, bcmsn, cgmp, leave, join, message, configure, router, switch, pass, exam, free, bryant Article Body:If a Layer Two switch doesn't have the capabilities to run IGMP Snooping, it will be able to run CGMP - Cisco Group Membership Protocol.  CGMP allows...

Summary:Cisco PortFast gives you an important warning when you configure it, but someone may ignore it.  Learn how BPDU Guard works with PortFast from Chris Bryant, CCIE #12933. Keywords:cisco, ccnp, certification, bpdu, guard, portfast, port, fast, switch, err-disabled, exam, pass Article Body:In your CCNA studies, you learned about PortFast and the trouble it can cause if configured on...