cisco ccna

cisco ccna

IPv6 host ( xp system ie6.0 ) accesses IPv6 WEB site 10.1.12.2 Ip address 3.3.3.3 255.255.255.255 RIP based on rumor updates When we configure the ISATAP router on the host (pointing to the IPv4 address of the ISATAP router ), the ISATAP host starts sending RS messages to the ISATAP router , as shown below: Static NAT-PT (one-way) R 3.0.0.0/8 is possibly down , routing via 9.9.12.2, FastEthernet0/0 Network 4.4.4.4 0.0.0.0 area 0 Ipv6 address FE80::FFFF:FE10:1 link-local On the CISCO IOS router, configure the mapping of a host name to an IPv6 address as follows: Show ip cef detail 500 Network 3.3.3.3 0.0.0.0 area 0 Related points Reference material C At this time, he himself will still forward if he receives the data packet to 3.0.0.0 , but will not forward to other rips. ESP head S0 192.168.12.1/24 r1 2204 Adding the default keyword will cause the interface to install a default route after getting the address through stateless autoconfiguration. This is the ICMP redirect message sent by R1 to R3 . Note that the Gateway address field in the header is filled with the next hop IP that is closer to the destination than the destination . After the above configuration is completed, the entire network route is passed. Command LSP Seq Num Multilink Multilink-group interface Test phenomenon: unable to ping . Image Fa0/0 Image Ipv6 enable interface Serial0/1 Case: Problems in the environment of education and telecommunications dual-export NAT network through PBR BGP metric is set to IGP metric IGRP OSPF re-advertises routes to IBGP The other bit is 1 to indicate that the host uses stateful address autoconfiguration to obtain parameters other than the address. Ipv6 ospf 1 area 0 Image SW1 creates two VLANs : VLANs 10 and 20 , which correspond to PCs and ISATAP routers. The IP address of the SVI port of VLAN20 is Ipv6 enable interface Serial0/1 No bgp default ipv4-unicast neighbor 2001::1 remote-as 12 Image Ipv6 access-list ipv6only-network permit 2001:1::/64 any ipv6 nat prefix 2001:2::/96 Complete the construction of the environment and the basic configuration of the device to ensure the interconnection of the entire network. Image Image None Image R1(config)# access-list 1 deny 192.168.3.0 R1(config)# access-list 1 permit any R1(config)# router ospf 1 Configure on R2 as follows: Y The loopback interface on R4 is redistributed to introduce IS-IS. 2 : RIP-2 . Image Ipv6 unicast-routing interface fast0/0 Router Advertisement ( RA ) Tunnel Tunnel interface Note that the above is the default metric when re-publishing from other dynamic routing protocols into this routing protocol . If you republish a local direct connection or a static route, the situation changes, as follows: The configuration of PE1 is as follows: When the link between R1 and R3 fails, the same network will still have problems. Because R2 re-releases the locally configured static summary route into the !! Call ipv6 local pool and set the lifetime The configuration of PE1 is as follows: Let's review the configuration of an IPv6 over IP manual tunnel (also called a configuration tunnel): !! Define the Ipv6 prefix to prepare for the announcement The R3 routing table is OSPF 's B segment route, then this B network route will be re-released back to the RIP domain, and ultimately to update E : global scope; The planning of the IS-IS network is as shown in the topology. R3.00-00 3.0 this route. This is an example of the use of a distribution list. Of course, it has a wider range of applications. RFC1723 Define multiple serial numbers under route-map . The serial number has a priority order when performing matching actions. Ip route 192.168.1.0 255.255.255.0 172.16.12.1 Image 1 : Request message, requesting all or part of the routing information from the neighbor; Image Duplicate address detection: The node sends an NS to the Solicited-Node multicast address corresponding to the tentative address that it will use . If it receives the NA of the response from another station , it proves that the address has been used on the network, and the node will not be able to use it. Use the tentative address communication. Today,cisco ccna, whether it is a wide area network such as the Internet , or a variety of LANs around the world , most of them are IPv4 . It is impossible to switch to IPv6 in one go. This is a big problem that integrates various factors such as politics, economy, policy, method, environment and so on. Switching from IPv4 to V6 takes a considerable amount of time. Then in this process, there will be a network environment where V4 and V6 coexist. Next, we will study the smooth transition technology from V4 to V6 .