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ccna 200 301 dumps reddit.(2) When the default router is set to the only incorrect setting. pinging in the local LAN based on IPv6 addresses should work. However, pinging addresses outside the subnet (using the default router) will fail. In addition, because name resolution fails, all ping commands using names will fail.(3) If the prefix lengths do not match, then the host and router will not agree on the subnet on the LAN (check out the steps). (4) If the host and router do not agree on what IPv6 subnets are on the VLAN, then the router may not be able to send packetsback to the host. The result is the same ping symptom as in step 2. From the standpoint of taking the exam, it is important to understand these symptoms as soon as possible. Therefore, if the question gives the host settings, then you should check them against the342 Chapter 16 Troubleshooting IPv6 Routing Troubleshooting router interface address, prefix length, and DNS server address information to review the settings, because it takes a little time to do so. From a practical problem-solving perspective, these symptoms can be broadly grouped into the following two categories.Failure to ping using the name.Failure of pings that require packets outside the subnet.For both types of symptoms, the first indicates some DNS problem, and the second indicates a default router problem, or a mismatched subnet problem.Failure to ping the default router from the hostNow, let's discuss the second scenario. The engineer has checked on the host and the host's default router, but all IPv6 settings on both the host and the default router appear to be fine. However, when a user on the host pings a more distant server, the ping command fails, either by name or by IPv6 address.Next, the network engineer wanted to narrow down the problem by running the ping command locally. He tells the user to ping only the default router IPv6 address from the host. This ping also fails. The engineer reverses direction and tries again to ping the host one by one from the default router, which also fails.