cisco ccna exam questions

cisco ccna exam questions

R4 and R2 , we look R2 , R2 moment from R4 has learned this RIP routes, if it from the R3 also learn the route and of the route metric is smaller, then,cisco ccna exam questions, R2 will preferably from R3 this Routes , so that R1 , R2 , and R3 form a routing loop. Ipv nd prefix 2012::/64 no-advertise Static route FastEthernet0/0 is up, line protocol is up 696 The packet contains a maximum of 25 routing entries. Image FF02::1:FFxx:xxxx where xx:xxxx is the lower 24 bits of each unicast or anycast address Internal EIGRP Bgp router-id 3.3.3.3 ! 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 The IS-IS domain is based on a two-layer structure, Level1 and Level2 , and the concepts of L1-router , L2-router, and L1L2-router , and IPv4 IS-IS . Experimental phenomena: (Update source verification failed), on the other hand, R2 will not receive the 1.1.1.0 route from R1 , and then pass the same interface, with 11.1.123.2 Then on R4 , you can only learn 1.1.1.0 . ! IPV6 and subnetting V1 uses broadcast, which is sent every 30s by default , using UDP port 520 (source, destination port) Feature overview Image ! How does the prefix announcement work? ! 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, then use the IPv4 network to find the A record, no response, and use the IPv6 network to find an A record. S 172.16.0.0/16 [1/0] via 172.16.3.0 S 172.16.3.0/24 [1/0] via 172.16.23.3 ! The router sends an icmpv6 message to an Ipv6 node , informing it that it is on the same local link in order to get a better router address to the destination tower. RIP Version 2 Carrying Additional Information Show ip cef C Route-map nat4 permit 10 R2#show ipv6 interface f1/0 FastEthernet1/0 is up, line protocol is up RIPng Vrf definition cisco rd 1:1 * 0x0000000B First define the track object , associated with an ip sla monitor Use RS to request RA Redis static route-map test Se0/1 No bgp default ipv4-unicast neighbor 2.2.2.2 remote-as 234 It is deployed on R1 and has an effect on these three routes. The router uses this information to construct a new Layer 2 header for the data frame and then forwards the message to the outbound interface pointing to the next hop. Ip nat inside source route-map nat1 interface serial0/0 overload ip nat inside source route-map nat2 interface serial0/1 overload ip nat inside source route-map nat3 interface serial0/1 overload During the transition of the network from the IPv4 single-protocol network to the IPv4-IPv6 IS-IS router, this command maintains the IS-IS adjacency between IS-IS routers using different protocol sets . It prevents IS-IS routers that use different protocol sets from performing hello checks and losing IS-IS adjacencies. After the network switch or transition is complete, you can configure the adjacency-check back.