Hi there,

New post on ignaonline.com — this one's a deep dive into IPv6 configuration on Cisco IOS-XE, covering everything you need to actually deploy it in production:

• Enabling IPv6 unicast routing and CEF
• Interface configuration for dual-stack (global unicast + ULA)
• SLAAC and Router Advertisement tuning (RDNSS, M/O flags)
• Stateless and stateful DHCPv6, plus prefix delegation (PD)
• OSPFv3 with the address-family model on Catalyst 9000
• ND security — RA Guard and ND Inspection
• IPv6 ACLs and the implicit NDP permit behavior
• Essential troubleshooting show commands with real output
• Dual-stack deployment gotchas: MTU, HSRP v2, NAT64

Every CLI snippet is real IOS-XE syntax, verified — not theoretical.

Read the full guide →

— Sarah Chen
ignaonline.com