Routing Looks Good, But Traceroute Still Fails
To finish this set of scenarios, this last scenario focuses on one particular root cause: IPv6 access control lists (ACL).
You have already learned how ping and traceroute commands can imply that a routing problem may exist. When ping and traceroute show that the host can forward a packet at least as far as the default router but not all the way to the destination, the problem probably sits in one of these two categories:
A routing problem exists.
Routing works, but some filter, like an IPv6 ACL, is ...
Get Cisco CCNA Routing and Switching ICND2 200-101 Official Cert Guide now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.