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ccna 200 301 dumps pdf free download.Before discussing these particular scenarios, the following three lists break down some important instances that should be true for the available IPv6 networks. The root cause of many of the problems in this section is due to breaking these rules. Questions about hosts', words into (1) The host needs to be on the same IPv6 subnet as its default router. 1 Sell edit (2) The host needs to use the same prefix length as its default router.(3) The host should have a default router setting that points to the real router address.(4) The host should have the correct Domain Name Service (DNS) server address. Questions about the router. words (1) The interface in use by the router should be in the up/up state.The main point of the peal16.2 Basic Content 341(2) Two routers connected to the same data link should have addresses in the same IPv6 subnet. According to the IPv6 subnet design, (3) routers should have routes that reach all IPv6 subnets.Filtering Issues While (1) NINGUARD (2) Watch for MAC address filtering on LAN switches. Watch for missing VLANs in the switch. watch for IPv6 access control lists (ACLs) on the router. (3) Before diving headfirst into these scenarios, if you stop and consider these lists, you will see that all of these items apply to both IPv4 and IPv6. o So, the process and concepts of IPv6 troubleshooting should be consistent to some degree with IPv4. Of course, they have different characteristics, and these scenarios will exhibit those differences. Now let's look at the symptoms of all the different IPv6 problems! The ping command issued on the host only works in some cases Our network engineer responded to a new problem. He called the user and asked him to try a few IPv6 ping commands on his PC. Some pings actually work and some don't. So what should he try next? Frankly, at this point in time, if you asked this question to ten experienced network engineers, you would probably get five or six different answers. However, the most useful next step when a host is sending some pings that work and some that don't, is to check the host's IPv6 settings. The static IPv6 settings on the host are one of the most frequent places where problems occur, and some of these problems can lead to the "some pings work and some don't" symptom. First, these numbers are very long and easy to mistype. Secondly, it must always be clear what information must match on the router and DNS server. Finally, for the exam, the instructor is able to change many small settings, thus creating new questions. Therefore, it is very easy to create new questions by editing images and changing numbers. Therefore, as with IPv4, you need to be prepared to check the IPv6 host settings. Figure 16-13 assembles all the elements that should match. The concepts are the same as those in IPv4. @-Next, consider the symptoms of the Ping test, assuming that one (and only one) setting is incorrect. (If there is more than one setting that is incorrect, then its symptoms will be more difficult to describe.) This is the diagnosis method for each setting item in the diagram specified below.(D When the DNS setting is incorrect, pings about host names will fail, but pings using IPv6 addresses should work (again, assuming there are no other problems.)