EtherChannel Review – VERY Important Layer 3 EtherChannel proper configuration for Exam Day!

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!

SWITCH Lab – Manual VLAN Pruning on Trunk interfaces, STP / EtherChannel behaviors, SWITCH and TSHOOT lab!

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!

STP EtherChannel – BPDU Misconfig Guard, Layer 3 EtherChannel, and EtherChannel Load-Sharing labbed!

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!

STP EtherChannel – All modes DEEP DIVE, cross-stack EtherChannel / channel-protocol reviewed, and verification cmds demonstrated!

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!

STP EtherChannel – Fundamentals illustrated, “On” mode basic config, troubleshooting, and verification on lab!

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!