Hey,

New post is up on ignaonline.com — this one is a thorough guide on STP and RSTP on Cisco Catalyst IOS-XE switches.

We cover root bridge election (and why you must configure it explicitly), PortFast and BPDU Guard on access ports, Root Guard and Loop Guard for topology protection, Bridge Assurance, MST configuration for large VLAN environments, and a practical troubleshooting workflow you can follow during an outage.

Lots of real CLI output and show command examples throughout.

Read the full post →

— Sarah