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IntermediatePublished 2026-06-25

CCNA IPv6 Static & Default Routing End-to-End Practice

Bundle lab

Hands-on IPv6 static and default routing across a 3-router, 2-LAN topology with end-user hosts. You will enable IPv6 unicast routing, apply IPv6 addressing, configure hub-and-spoke static and default routes, and validate bidirectional host reachability. The guide provides scenario context, step-by-step tasks with the why behind each action, and targeted troubleshooting.

Track
Est. time
55 minutes
Difficulty
Intermediate
Topics

Learning objectives

  • Enable IPv6 unicast routing on IOS routers
  • Apply IPv6 addressing to LAN and point-to-point transit links
  • Configure IPv6 static routes using next-hop global unicast addresses
  • Set IPv6 default routes (::/0) from branches to the hub
  • Validate static-route installation and end-to-end IPv6 reachability from hosts
  • Troubleshoot missing return routes, wrong next-hops, and default-route preference

Troubleshooting focus

  • CLIENT-A cannot reach CLIENT-B (or the reverse) while the branch default route looks fine: RTR-HQ is missing the return path. Add a /64 static route toward that branch's LAN via the correct branch next-hop.
  • Traceroute6 stalls at the hub although show ipv6 route looks normal: a static route points at a black hole. Each next-hop must be the neighbour's address on the directly attached transit — not a local address or an interface-only route.
  • Branches have no::/0 and pings to the remote LAN fail immediately: confirm ipv6 unicast-routing is enabled globally on the router first, then that the default route uses the hub's correct global unicast next-hop on the transit subnet.
  • No Layer-3 reachability at all despite correct routes: confirm both ends of each transit are up and share the exact same /64, and that cabling on Ethernet0/0 and Ethernet0/1 aligns with the documented plan.

Topology

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Learn Static & Default RoutingHow Does Routing Work? The Routing Table Explained

Grade your work

How this lab is graded
  • Build it your way. Where a lab lets you choose a value — a VLAN name, an interface description — grading checks that you configured it, not which name you picked. Names that another line has to reference, like an ACL applied with access-class, are stated in the guide and do have to match.
  • Addresses, modes and protocol keywords are exact. An IP address, a subnet mask, switchport mode trunk, an encapsulation — these carry the meaning of the lab, so they are graded as written in the guide.
  • Grading reads your saved configuration. Export the lab from CML after you have configured it, and make sure anything you set is in the running-config — a change that only exists in a terminal session never reaches the grader.
  • You can submit as many times as you like. Your best score stands, and each attempt tells you which checks passed so you can work the gaps.
  • Scored something you believe is correct? Use Report an issue on this page — that is exactly how the grading fixes in the changelog got found.

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