Most enterprise networks still run dual-stack at best in 2026 — and many haven't touched IPv6 at all. That's no longer acceptable. ISPs hand out IPv6 prefixes by default, cloud providers route native IPv6, and a growing slice of mobile traffic is IPv6-only.

In this guide, Sarah Chen walks through full IPv6 deployment on Cisco IOS-XE: addressing, OSPFv3 with the address-family model, DHCPv6 (stateful and stateless), IPv6 ACLs with proper ICMPv6 handling, BGP for IPv6, and the verification commands that actually tell you what's broken — with real CLI output and production gotchas like PMTUD breakage, RA Guard, and Cat9K SDM templates.

Read the full guide on ignaonline.com →