TSHOOT – Unicast Reverse Path Forwarding (uRPF), and VLAN Access-List (VACL) details reviewed for exam day!

A full understanding of the mechanics of uRPF (the different behaviors of the two modes especially), along with knowing the basic configuration and theory of how VACLs work, so when you are faced with tricky word play / config examples of either on a Cisco exam or while on the job troubleshooting a production network! … Continue reading TSHOOT – Unicast Reverse Path Forwarding (uRPF), and VLAN Access-List (VACL) details reviewed for exam day!

Quick Takeaways from DHCP Snooping / Dynamic ARP Inspection / VLAN Access-List labbing session and misc tips for Exam Day success!

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!

VLAN Access-Control List / VACL – DEEP DIVE into Configuration, Verification, and a LOT of explanation! Prepare yourself!!

This is very complex (like pulling teeth), prepare yourself for a LOT of info! On an MLS Switch we have the TCAM that covers IP Routing, including Access-Control for Inter-VLAN communication (between VLANs / Subnets) at Layer 3, and for Access-Control for Intra-VLAN Communication (Between Hosts in the same VLAN / Subnet) we have VACLs … Continue reading VLAN Access-Control List / VACL – DEEP DIVE into Configuration, Verification, and a LOT of explanation! Prepare yourself!!