The last thing I left on from Cisco forums was an issue with their exam experiences in regards to the topic of L3 EtherChannel configuration, so I thought a good place to start would be where I left off, and this will be important for exam day I expect! If you read nothing else, skip … Continue reading EtherChannel Review – VERY Important Layer 3 EtherChannel proper configuration for Exam Day!
I started freestyle labbing to review some topics, and found some interesting behaviors along the way I wanted to make note of here, so this will be more of a troubleshooting / behaviors demonstration than a configuration of any particular topic. The topic I went with here is creating VLANs local to their respective switches, … Continue reading SWITCH Lab – Manual VLAN Pruning on Trunk interfaces, STP / EtherChannel behaviors, SWITCH and TSHOOT lab!
I'll be working between SW1 and SW3 for this lab, as it can work to cover both the lab topics of "EtherChannel Misconfig Guard" as well as Layer 3 EtherChannels, and reviewing some EtherChannel Load-Sharing and testing load-sharing to finish! EtherChannel Misconfig Guard - Hiding in plain sight throughout all these labs! Every … Continue reading STP EtherChannel – BPDU Misconfig Guard, Layer 3 EtherChannel, and EtherChannel Load-Sharing labbed!
I've removed the 2 x 1Gig links and replaced them with 3 FastEthernet links for this lab, as I wanted to do some adjusting of speed and duplex throughout the lab, but with multi-mode fiber it is not having any of those sort of changes: SW2(config)#int gi1/0/1 SW2(config-if)#speed ? nonegotiate Do not negotiate speed SW2(config-if)#duplex … Continue reading STP EtherChannel – All modes DEEP DIVE, cross-stack EtherChannel / channel-protocol reviewed, and verification cmds demonstrated!
During the lab I will only use the FastEthernet interfaces between SW1 and SW3 to demonstrate EtherChannel "On" configurations and behaviors, as I have found Multi-Mode Fiber interfaces do not interact the same way, as shown at the bottom of post! STP EtherChannel Fundamentals STP EtherChannel is the answer to STP's Loop Prevention … Continue reading STP EtherChannel – Fundamentals illustrated, “On” mode basic config, troubleshooting, and verification on lab!