Credit to @SpanningTreeDC on Twitter for the awesome STP logo! Wanted to throw some notes on here on which STP features are global, interface level, how the global configs will impact interfaces that are configured and also how error-recovery can save the day when you don't want to have to shut/no shut every err-disable interface … Continue reading Pretty easy read on STP Sub-Commands, what they do, errdisable demo, some labbing, lots of good info for exam day!
Correction: 2/23/20 is the last day to take 300-101, 300-115, and 300-135 specifically! (Updates / timelines of exam expirations at bottom of post!) It turns out the new exams are also 300-XXX, and I'm too lazy to re-write that graphic 🙂 As mentioned in the above graphic / title, 2/23/2020 will be the last day … Continue reading The CCNP R/S Refresh is here – Migration Tool, exam life times during migration explained in detail, and a peek at the monster ENCOR blueprint!
Some quick notes from labbing tonight that I thought is good to knows for Exam day, this will all be very messy crap with output behaviors, no editing out to make it look nice! ALSO one important note I keep forgetting - It is for PRIVATE VLANS that VTP and neighbors hosting Private VLAN must … Continue reading Quick Takeaways from DHCP Snooping / Dynamic ARP Inspection / VLAN Access-List labbing session and misc tips for Exam Day success!
I wanted to update this blog that I have put off studying to take care of myself physically, as I have been going from Work laptop -> Study laptop -> Bed -> Work Laptop, and it started to take a toll on my physical well being so I decided to take a much needed break. … Continue reading SWITCH exam postponed until I have time to dedicate to covering material and going for the Pass!
Thank you to Wikipedia.com for the above diagram, not sure if it entirely helps explain the data-flow, but it shows the components of SNMP (and yes I've made my donation!) This is a lot to cram into the brain with the slam of complex topics toward the end, so I'd just try to keep the … Continue reading SNMP – Refresher from ROUTE studies, important to know basic terminology and concepts, and some (long winded) syntax examples if you dare!
Not sure why the Batman slapping Robin picture, but I just had to use it 🙂 For the sake of lighting a fire under myself to get back on the grind to finish my CCNP, I've paid for the 300-115 SWITCH exam in 6 weeks, so I will be pounding through some review each day … Continue reading Back to the Grind! Finished review, bullet points of major details of most topics covered up to GLBP segment!
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!
The above Topology represents a failure on a Fiber Optic Transmit / Receive cable pair on one cable, on one end of the link, which would leave the link up and Unidirectional. Here is an example of the SFP Transceiver and Fiber cable connecting to a switch: Source : This Cisco.com 2960x Fiber Stacking article … Continue reading STP – Fiber Cabling, Loop Guard and UDLD DEEP DIVE, and important notes for exam day!
The DEVNET GRIND! 