ccna exam answers

ccna exam answers

1 Image The configuration is as follows: IP Stateless autoconfiguration The BGP4+ configuration of R1 is as follows: 0 00:01:32 OSPF routes take effect, and only 1.1.1.0 routes survive. The source of continuous routing is direct routing, or RIP . Default router information !! The prefix of this IPv6 address will be advertised to the ISATAP host. [Experiment 2 ] Both IPv6 islands use ordinary IPv6 global addresses. Authentication Header the Authentication Header (Protocol 51 ) Implementation points ! RIPng Interface-level command to join a multicast group, that is, the interface becomes a member of the multicast group. One thing to note is that if this 6to4 relay router is "far away" from your network, this may cause poor IPv6 traffic between you and the IPv6 Internet . To help a 6to4 site find available 6to4 relays on the Internet and give the 6to4 mechanism more scalability, RFC3068 introduces an arbitrary broadcast prefix. Such 6to4 packets can be automatically routed to the nearest IPv4 Internet. In addition, because ISATAP 's operating range is within the site, the IPv4 address of the ISATAP host and ISATAP router can be private IP or public IP . By using route tags in RIP , you can control the redistribution of related routes in other protocols. When republishing to other protocols, RIP routes simply compare the tokens assigned to them without comparing the entire route. R3 associates the route-map with the redistribution of the direct route 3.3.3.3/32 , tag#11 , and the route is passed to R2 . On R2 , the redistribution of RIP to OSPF is deployed. After the external route of 3.3.3.3 is injected into OSPF , the tag value is carried by default. None description Ip local policy route-map x Ipv6 router ospf 100 router-id 3.3.3.3 exit Ipv6 unicast-routing DAD inspection phase. In the DAD success before, it has been in the address TENTATIVE ( test state ) state, when the address is unavailable until DAD success . Then enter the Preferred state, which is the preferred state. The validity of the IPv6 address in this state is determined by preferred lifetime . Ipv6 router rip RIPprocess As long as a local site or global aggregatable unicast IPv6 address and its prefix length are configured on the network interface , the IPv6 prefix advertisement on the CISCO router is enabled . Modified OSPF the AD value Two-way re-release of OSPF and RIP [Note] If the interface is passive , but at the same time the network interface in the routing process, the interface will not attempt to send updates or establish neighbor relationships, but the network segment where it is located will still be declared into the routing process. Version Route-target import 234:4 Neighbor 2001::1 update-source Loopback0 A quick look at: The GRE tunnel packet capture is as follows: Image Image After completing the configuration, R2 show ip route Respond to an RA after the router receives the RS : Next Hop 0/0/0 //Get out a summary route instead of the default route R2(config-router)# distribute-list 1 out fa 1/0 ! Ipv6 address 2001:34::3/64 *> 2001:1111::1/128 Look at the above picture, the gray space 172.16.0.0/16 , this network number, we call the main class network number , the so-called main class network number, meaning the network number, according to the IP address category to which it belongs , corresponding to The network number obtained after the default subnet mask length. Such as 172.16.0.0 this is a The configuration of R3 is as follows: Set tag 20 Use the match command to match a specific packet or route, and set to modify the packet or route related attributes. Image Protocol ID: 0x0800 32 bits Ipv6 address 2002:CA65:1703::FFFF/64 Redistribute routes to the protocol For example, if you go to a destination and there may be multiple equal-cost paths, you may actually use one of them when forwarding data. Use this command to see which interface is actually used for traffic forwarding. 0000 – 00FF Tunnel mode gre ip tunnel source serial 0/0 Show ip cef R2 , R3 establish IPv6 the EBGP neighbor relationship, R3 re-direct routes, making the R1 , R2 can learn to Ipv6 unicast-routing The above configuration is only to solve the problem of data direction, but the problem of NAT : Interface FastEthernet0/0 Dynamic NAT-PT Ip cef Route refresh: advertised and received (old & new) Address family IPv6 Unicast: advertised and received ipv6 MPLS Label capability: advertised and received This method is very simple to deploy. In many cases, customers can use IPv6 hosts in the network to access V6 resources in order to save costs . At the same time, they are not willing to make large-scale changes and equipment upgrades to existing networks. This approach,ccna exam answers, buy a router that supports ISATAP , and even hang the ISATAP router on the network as long as it can access V6 resources and respond to ISATAP PC tunnel establishment requests.