ccna 200 301 dumps pdf download

ccna 200 301 dumps pdf download.If the ping fails, then the items that are expected to appear do not appear in the table, which may indicate a problem that prevents NDP from looking up neighbor MAC addresses. Example 16-7 shows the use of this command on router R2 in Figure 16-12, listing the IPv6 and matching MAC addresses for PC2.Example 16-7 The show ipv6 neighbors Command on Router R2R2# show ipv6 neighborsIPv6 Address FE80::11FF:FE11: FE80::22FF:FE22: 2001:DB8:lllll:3: 1111 2222 :22 Age Link-layer Addr State Interface 00200.1111.1111 STALE Gi0/0 10200.2222.2222 STALE Gi0/0 00200.2222.2222 REACH Gi0/0FE80::D68C:B5FF: FE7D:8200 1d48c.b57d.8200 DELAY Gi0/02001:db8:1111:3: :33 00200.1111.1111 REACH Gi0/02001:DB8:llll:3: :3 0d48c.b57d.8200 REACH Gi0/016.2.2 Troubleshooting IPv6Suppose a medium-sized enterprise network uses IPv6 and is working well. You get home from work every day on time and without any worries. Then, one day you go to work and receive a text about a network problem. So, what do you do? You try a few commands to isolate the problem and eventually find the root cause of the problem. For example, there may be a user who is having problems, and a colleague has "helped" him by configuring the user's PC with static IPv6 settings, and there is a typo in the default router IPv6 address.The rest of this chapter presents seven different IPv6 troubleshooting scenarios, as if the engineer had just begun to solve the problem. Each problem assumes that the engineer believes the problem is in a specific part of the network or for a specific set of reasons. Each scenario provides us with an opportunity to discuss the potential root causes for the appearance of particular symptoms, allowing us to review the reasons behind the appearance of those symptoms.