ccna actual test

ccna actual test

Ipv6 address 2001:23::3/64 8 bits Route accurate summary algorithm Ip route 10.1.2.0 255.255.255.0 10.1.254.1 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 Packets with destination addresses that do not exist at the beginning of 192.168 are discarded directly. Normal traffic on other subnets of the 192.168 intranet will be forwarded according to the longest matching principle. The router goes to update the route of 3.0.0.0 Switching, and store the information in the cache, all subsequent data packets , you can not interrupt the system processor to perform queries and other operations , directly from The configuration of R2 is as follows: The configuration of R1 is as follows: Set the outgoing interface of the data 32 bits RIPv1 , v2 Image Ip route-cache flow show ip cache flow Destination address: The address of the host or network. ...... 192.168.8.0/24 Based on agreement Re-routing release ( Redistributing Routing Protocols ) Review the previous IPv6 only network access to the IPv4 only network using the V4 address pool. Experimental procedure Configuration example 1 ( -RIP in a single routing protocol environment ) Must be zero Incoming interface: Loopback0 8000 – 9FFF Ipv6 enable For example , the configuration of R3 is as follows: twenty two R1 , R2 , and R3 run RIP , and 1.1.1.0/24 on R1 is not directly announced. On R2 : Configure all interfaces as passive and manually activate specific interfaces: Route-target import 234:2 Ipv6 ospf 100 area 2 Ipv6 unicast-routing Ip route 1.1.1.0 255.255.255.0 serial 0/0 Network consolidation (same protocol or different protocols) If an OSPF in- process route cannot be summarized: Other uses 2.2.2.0, but the update is 2.0.0.0 after the summary Image Here , the "high-order 32bits reserved for ISATAP " in the 64-bit interface identifier is described on Wikipedia: " The link-local address is determined by concatenating fe80:0000:0000:0000: 0200:5efe: for global unique Router isis R1 and R2 run RIP ; R2 and R3 establish OSPF neighbor relationships. In the initialization case,ccna actual test, there are four entries in the routing table of R2 , as shown in the figure above, and there are only two entries in the routing table of R1 , that is, two direct links. So now, we do the re-release action on R2 , and redistribute the OSPF route to RIP , then the configuration is as follows: (2033::3, FF04::1), 00:00:16/00:03:13, flags: SFT Ipv6 address test ::FFFF/64 Ipv6 unicast-routing Below we summarize some of the key points of the router about route lookup: Dns-server 2000::8 domain-name HelloWord We mainly analyze: Router(config)# ipv6 neighbor 2012::2 fastEthernet 0/0 cc01.0cf0.0000 R1# show ipv6 neighbors Ipv nd prefix 2012::/64 no-advertise The last command is to put the host of the IPv4 network 202.101.100.2 into the IPv6 network, so that the IPv6 only user has the access target. Otherwise, what destination address do you use the IPv6 only user to access the IPv4 only network? !! Re-release direct connection Ipv6 address 2001:23::2/64 Router# Show ipv6 route BGP metric is set to IGP metric Global command, enable IPv6 multicast-routing . After the switch is enabled, all IPv6- enabled interfaces automatically open IPv6 PIM. To verify which outbound interface is used for a particular traffic in destination-based load balancing, use 1/8 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 : Virtual-PPP Virtual PPP interface Route summary technology background Ip address 202.101.23.3 255.255.255.0 Address-family ipv6 neighbor 4.4.4.4 activate Network 4.4.4.4 0.0.0.0 area 0 R4.00-00 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 UDP Image Ipv6 local pool dhcppool 2001::/64 64 RIPv1 , v2 16 bits None ::1 FF02::1 FF02::2 FF02::1:FFC4:0 Mechanism involved The address family message is always 2 by default , and is 0 when requesting the entire routing table. Image R2 entries ( 2033 :: 3 is R3 is Loopback0 port IP address): Ipv6 router ospf 1 router-id 4.4.4.4 Image 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 When we deploy PBR on an interface , if this interface receives a packet, it will: 835 202.101.100.100 Nolabel/403 Virtual-PPP Virtual PPP interface Virtual-Template Virtual Template interface Thinking question In the figure above, we started the re-release action on R2 . We "inject" the OSPF route into the RIP process, so that Image ? Image Virtual-Template Virtual Template interface Virtual-TokenRing Virtual TokenRing !! is a pool reserved for NAT-PT Network 10.1.34.3 0.0.0.0 area 0 Linklocal address of the router : We found that on R1 , the route is not best , it is very simple, because NH is unreachable. The solution is simple, do next-hop-self on R2 on R3 RIPng for IPv6 [Two times of prefix] Image Hex netsh interface ipv6 add route 3333 :: / 64 21 nexthop = fe80 :: 1 !! add an object of 3333 :: / 64 of IPv6 routing number associated with the index 21 interface, the next hop is fe80 :: 1 Image Solution: Use distribution lists to circumvent suboptimal path problems Distribute-list You can modify the default parameters of the nd prefix advertisement under the interface. Y length If ip routing is enabled , the command is ignored (but the default route Ip route 0.0.0.0 0.0.0.0 x ) is displayed ; Redis static route-map cisco If you only want to detect the reachability of some next-hop devices, you can configure different route-map serial numbers to selectively use this feature (in the same route-map ). Ip address 10.1.23.3 255.255.255.0 Must be zero ! In an IPv6 multicast address, there is a special multicast address called Solicited-node address (the requested node multicast address ) . The Solicited-node address is a special purpose address. Mainly used for duplicate address detection ( the DAD ) and alternative IPv4 in the ARP . The Solicited-node address consists of the prefix FF02::1:FF00:0 / 104 and the last 24 bits of the ipv6 unicast address .