ccna latest version

ccna latest version

Feature overview After completion, both OR1 and OR2 can learn the loopback interface route of the other party , but they cannot ping . View the routing table of OR1 : ... partially omitted ... OSPF . In this way, for R4 , it goes to 192.168.1.0 , there is a sub-optimal path , that is, around the long way, take R2-R3-R3-R5 Overview 1 : RIP-1 ; ! Increase flow label All options are longer than or equal to 0 Conducive to the fast processing of hardware, so that intermediate nodes can avoid processing and save a lot of resources Image 110 These modes generally only be on high-end Cisco device applications , such as 7200 series routers . Or 12,000 Series routers . Command : ip route-cache optimum show ip cache optimum Holddown timers are ignored in some versions of IOS , that is, they do not take effect even if they are set. R1 will first look up the AAA record through the IPv4 network , and then go to the AAAA record through the IPv6 network , and find that there is no response,ccna latest version, then use the IPv4 network to find the A record, no response, and use the IPv6 network to find an A record. Interface FastEthernet1/0 ipv6 ospf 1 area 0 Must be zero 192.168.2.0/24 Epoch 0 Image Unassigned ::1 --- R2#sh isis neighbors Experimental needs Interface FastEthernet1/0 Image ... partially omitted ... Prefixing 1111 0xxx xxxx xxxx The configuration of R2 is as follows: The dual-stack host uses HTTP to access the tunneling proxy through IPv4 . This dual-stack host may be an end user that fills in a web page. Image Exit-address-family Ivv6 nat v4v6 pool v4v6-pool 2001:2:: 2001:2::FFFF:FFFF prefix-length 96 ipv6 nat v4v6 source list 1 pool v4v6-pool Can I handle AS-external-lsa , usually ASBR? Router(config-router)# passive-interface fast 0/0 Router(config-router)# neighbor 192.168.123.2 0 , regarded as infinity Image Route matching tool IPv6 header replace IPv4 header prior to forwarding to B . Isis circuit-type level-1 Ipv6 unicast-routing The standard ACL active part and destination part use the source matching route prefix and use the destination part matching route mask. 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 The configuration of PE2 is as follows: Ip policy route-map x Let's review the configuration of an IPv6 over IP manual tunnel (also called a configuration tunnel): Ipv6 address test ::FFFF/64 Initially, R3 can learn three loopback routes from R1 and 192.168.12.0/24 routes. Now we don't want R3 to learn the route to 192.168.3.0/24 , then we can configure it on R2 as follows: Do not use prefix for autoconfiguration *> 2001:1111::1/128 In fact, there are two main lifetimes of IPv6 addresses , one is Valid lifetime and the other is preferred lifetime . First in OUT direction Ipv nd prefix default ? At the same time, the same OSPF route is learned from both processes and is used on a first come, first served basis. Therefore, if R3 first learns the route from R1 , it will naturally ignore the one that R2 re-releases. However, if the neighbor relationship between R1 and R3 is already obtained in R3 Router-id 4.4.4.4 redistribute connected exit Redistribute ospf 1 route-map test Image At the same time, the tunnel proxy automatically applies the remote configuration of the configured tunnel on a dual-stack router connected to the IPv6 network. Once the configuration is applied on the dual-stack host and the dual-stack router, the tunnel is correctly established. 4) A return packet, the data packet is sent to R2 , and R2 has a mapping of 2001:2::CA65:6402 to 202.101.100.1 , so R2 will ::1 test.com Switchport access vlan 20 interface vlan 10 Image Ipv6 router rip RIPprocess exit Match ip next-hop matches the next hop address to those allowed in a particular access list Ipv6 unicast-routing Regular updates, broadcast updates, routing table updates; according to rumors; distance vector routing protocols do not understand network topology The concept of traditional IP routing Let us review: When the router receives an IP packet, check the IP header of the packet, and take the destination IP of the packet to the routing table for comparison according to the longest matching principle. Finally, Forward the packet. Therefore, traditional IP routing can only be routed based on the purpose of the data. Let us look at the above example. In a typical education park network, we often have more than two external network export routes, assuming one for telecommunications and one for education network. Then we generally add a default route to the egress router, pointing to the next hop address of the telecom, in order to allow intranet users to access Internet resources through telecommunication lines . However, if the telecommunications export fails? We can add a default route to the router.