ccna preparation

ccna preparation

DAD Address structure Generate a default route Route-map test permit 20 Address-family ipv6 neighbor 2.2.2.2 activate Interface Serial0/0 ipv6 enable Port-channel Ethernet Channel of interfaces Router(config-rtr)# distance x Offset-list 1 out 1 serial 0/0 IPv6 is enabled, link-local address is FE80::CE00:DFF:FE48:0 Global unicast address(es): Complete the construction of the environment and the basic configuration of the device to ensure the interconnection of the entire network. Ipv6 access-list v4map permit 2001:1::/64 2001:2::/96 ipv6 nat prefix 2001:2::/96 v4-mapped v4map 2. Pass the RIP update with an unnumbered address ( invalid source ) Image Requested node multicast address corresponding to each unicast and anycast address used Ipv6 ospf 1 area 0 Image GRE tunnels also need to manually specify the destination of the tunnel at both ends of the tunnel. Check the VPNv6 prefix 2001:5555::5 on PE1 . You can see that the out label is 403. It is obvious that R4 is the label assigned by PE2 . This label is actually the label of VPNv6 . In order for PE2 to know, this data belongs to VRF . You can also use the following command to view !! ipv4 routing, so that the route can access the tunnel destination , which is 10.1.23.3 Ip cef Image Ip address 1.1.1.254 255.255.255.0 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. Interface serial0/0 A tool used to control routing updates can only filter routing information and cannot filter LSAs . Image ! Ip name-server 2012::2 ip domain-lookup UDP Advanced features Neighbor 4.4.4.4 update-source Loopback0 <0-4294967295> R2 re-advertises the A route, then according to the preemptive rule, R3 will ignore the R1 update about the A route. At the same time, due to the deployment of two-way re-release, R3 will further re-publish the learned A- route back to process 1 . ! L1 Se0/0 10.1.12.2 Into, both are indispensable, such as 192.168.1.0/24 and 192.168.1.0/25 , although the network numbers of both are the same, both are 192.168.1.0 , but the two are definitely two different routes, two different Routing prefixes because their prefix lengths are not the same. Interface Serial0/0 ipv6 enable R4 released the RIP route of 100.1.1.0/24 , which can be learned by both ASBRs . The solution is to configure static summary routes on the two ASBRs : Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP U - Per-user Static route The configuration of R4 is as follows: Ipv6 unicast-routing interface Serial0/0 encapsulation frame-relay Use the DHCP PD feature. On R2 , this test is valid locally as a PD identifier. The command distribute-list out works only on the routes being redistributed by the Autonomous System Boundary Routers (ASBRs) into OSPF. It can be applied to external type 2 and external type 1 routes, but not to intra-area and interarea routes. Unassigned When a node starts the IPv6 protocol stack, each interface of the node automatically configures a link-local address. This mechanism allows two IPv6 nodes connected to the same link to communicate without any configuration. The default gateway recommends using a link-local address because this address is the most stable. PE1 , P , and PE2 form an LDP neighbor relationship and deliver IGP labels. Interface serial0/0 Image Experimental needs EIGRP , BGP and other dynamic routes learned. RIP database Dialer Dialer interface Destination Address LSP Seq Num !! GW has no other configuration about routing DAD Note that the Linklocal address here : FE80::5EFE:202:202 is an ISATAP format address, the last 64bits are After being injected into EIGRP , the tag is still carried. Of R4 redistribute incoming IPv6 prefix summarize, reduce routing entries Complete basic IP configuration Verify the role of the match interface 2 R1 CE1 The IPv6 routing to put PE1 , PE1 created on IPv6 in the VRF ,ccna preparation, the Fa0 / 0 Kou into the VRF . PE1 learned through BGP Ipv6 ospf 1 area 2 STALE Network 10.1.23.2 0.0.0.0 area 0 Path Label associated with the VPNV6 prefix: Address family identifier. When the value is 2 , it indicates the IP protocol. R1 release A network routing, R3 will learn this OSPF routing; Additionally, R2 also learned, assuming R2 deploy OSPF to RIP routes redistributed, which eventually route R3 will pass RIP also learned, then R3 will At the same time , the route is learned from RIP and OSPF . R3 will optimize the OSPF route. Because OSPF has a small AD , OSPF re-releases it to RIP without causing a suboptimal path problem.