As I promised last time, I will be providing more updates regarding the differences between the previous CCNA track and the new CCNA Routing and Switching track announced by Cisco on March 26th. One of the major differences is that the revised track will include lecture and lab on the topic of Etherchannel, or port … Continue reading Changes to the ICND1 Curriculum from Cisco! Etherchannel Port Aggregation
Tag Archives: STP
Spanning Tree Protocol (STP) has been around the block
Last time we were introduced to the basics of the Spanning Tree Protocol, the loop prevention mechanism that has been with us since 1985. STP results in a network where some ports are transmitting frames and some are blocked (hence the title you see above). This blog will discuss the default timers of the original 802.1d … Continue reading Spanning Tree Protocol (STP) has been around the block
Spanning Tree Protocol (STP) takes root
So you want redundancy in your network. You want multiple links to the same destination. You want fall back plan on top of fall back plan. But multiple redundant links lead to a dangerous situation – the possibility of a loop in your sacred layer two fabric. How is this situation resolved? Enter Spanning Tree … Continue reading Spanning Tree Protocol (STP) takes root