ccna dc dumps

ccna dc dumps

! 202.101.100.2 Advanced features Vlan 20 interface fast0/1 R R2 's F0/0 port is configured with proxy ARP , 3.3.3.0 network R2 itself is reachable, so R2 will respond to this ARP request with its own F0/0 port MAC . In fact, this is an ARP spoofing behavior: ) DHCP message client listens to UDP546 ; servers and agents listen to UDP547 After completing this configuration, we can show it: Neighbor FE80::CE02:8FF:FED8:0 update-source FastEthernet1/0 Outgoing !! define vrf This way the routing table: Ipv6 route ::/0 tunnel 0 Image Static routes Ipv6 address FE80::FFFF:FE10:6 link-local ipv6 router isis :: Wherein R3 is as follows: 5 : local site range; Ipv6 local pool dhcppool 2001::/64 64 interface Serial0/0 *>i2001:45::/64 Ipv6 address 2001:34::3/64 Route-map test permit 10 match ip address 1 Image The TAG value is set when the originating ASBR generates an external LSA . If the external LSA is re-advertised to other OSPF autonomous systems, the TAG value is carried by default. Image ! Test description: ping FF04::1 on R2 and Fa1/0 on the outbound interface Configuration command Via FE80::FFFF:FE10:2, Serial0/0 None The next hop of 1.1.1.0/24 , because the AD value of OSPF is better than RIP . Interface FastEthernet1/0 Configuring a sample RIP environment Interface FastEthernet0/0 ipv6 enable OUT direction Router(config-rtr)# distribute-list prefix-list xxx {in | out} [interface] R2 's EIGRP routing process: Image Image Exit-address-family Router request ( RS ) 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 Ipv6 access-list x enters acl configuration mode Image !! configure validtime and preferd time , this is a relative time In an IP network, Routing is a very, very basic concept. The basic function of the network is to make two in the network ! Redistribute connected subnets redistribute rip metric 10 subnets Image E.g: Image The neighbor request has been sent to the destination node's request multicast address, but no neighbor notification has been received. Route-map test permit 20 1) The above example, A received the IPv4 public network address: 132.214.1.10 , the mapping obtained 2002: 84d6: 010a :: / 48 , part of this address space was eventually used on PC1 . Now, PC1 will send an IPv6 data to PC2 . The source of this data IP is PC1 of Route-map features [Experiment 3 ] No main class network; there is a default route, take the default route R1 goes to ping R4 and can ping . [Experiment 6 ] There are subnet routes, the subnet route prefix length is different (matching and mismatching), and the matching route is taken. Interface Tunnel0 ipv6 enable The GRE tunnel packet capture is as follows: IPv6 routing Therefore, when CE1 accesses 2001:5555::5 from the source 2001:1111::1 , the data level is like this: Static route configuration MTU is 1500 bytes Neighbor 4.4.4.4 send-community extended exit-address-family Ipv6 address 2001:1111::/64 eui-64 no ipv6 nd suppress-ra Image Ipv6 enable interface Serial0/1 ...... Configuration example Introduced in the route-map section of this document When the network is normal, the data is forced to go ISP1 , ping 100 remote network data to ISP1 Ip route 172.16.3.0 255.255.255.0 172.16.12.3 Network 10.1.23.3 0.0.0.0 area 0 The update is sent. At this time, both parties have their own routes, but 1.1.1.1 cannot ping with 2.2.2.2 . OSPFv3 packet This is the general case, of course, there are two situations,ccna dc dumps, it depends on the specific environment and the specific routing protocol. * i2003::3/128 I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary Image Image Experimental steps and configuration R1 and R3 respectively apply for the public network Ipv4 address and configure a dynamic 6to4 tunnel. In R1 , for example, arranged Tunnel 0 , assign an IPv6 address ( 6to4 address), this address is R1 is V4 external network address corresponding to the IPv6 6to4 address, i.e. 202.101.12.1 corresponding to Ip prefix-list ABC seq 5 permit 0.0.0.0/0 le 32 29 IGRP for OSI networks Metric for redistributed routes Mobile routes 2001::1 Router(config-router)# passive-interface int- type int-num Ipv6 nd reachable-time !! A neighbor confirmed after its accessibility by an event, during which time the neighbor is considered reachable, the default 30S (in CISCO IOS on the show out, the book says It’s 30min , it’s estimated to be wrong.) Note: If CDP- based detection and object tracking- based detection are applied, the latter is preferred. A distribution list is a tool used to control routing updates. It only filters routing information and cannot filter LSAs . Therefore: the distribution list is used in the distance vector routing protocol, and the route can be filtered normally in either in or out direction. But the work in the link state routing protocol is a bit problematic. # 102.54.94.97 Ipv6 unicast-routing interface Loopback0 !! Note that on IPv6- capable PEs , IPv6 cef must be open. Ipv6 address 2001:12::2/64 ipv6 rip RIPprocess enable Mpls label range 400 499 mpls ldp router-id Loopback0 Ip route 0.0.0.0 0.0.0.0 192.168.12.1 The router performs the next IPv6 forwarding by the router . ! Refcount 6 Wherein, R2 back to R1 of ICMPv6 error message is as follows: R1#show ip cef 2.2.2.2 internal OSPF redistributed directly connected interface default cost20 ; redistributed static route default cost20 ; using the default-metric can modify and redistribute static routes into other routing protocols OSPF default after the cost , but this command to redistribute directly connected interface. invalid. Ip route 0.0.0.0 0.0.0.0 192.168.23.3 Ipv6 nat v6v4 source 2001:1::1 202.101.100.111 Neighbor FE80::CE01:8FF:FED8:10 update-source FastEthernet0/0 IP Address Ipv6 nat v6v4 source 2001:1::1 202.101.100.100 Hierarchical considerations Image (2033::3, FF04::1), 00:00:16/00:03:13, flags: SFT CEF form The above configuration is only to solve the problem of data direction, but the problem of NAT : Image Source of routing information: How is this route learned, for example, static, or through OSPF , IS-IS , NLRI : is a set of destinations, expressed as an IPv6 prefix. There are two types of ICMP messages: error messages and information messages. ! ! address. In this way, B can actively access A , for example, B to ping 202.101.100.100 , can ping , the process is as follows: The idea is the same as V6 access to V4 . Router redirection Standard ACL Ipv6 enable Image R4.00-00 RFC1722 When the network is normal, the data is forced to go ISP1 , ping 100 remote network data to ISP1 Router bgp 300 !! Configure the DHCP client and specify the prefix name obtained as test (local valid) Neighbor Ipv6 address 2001:34::3/64 Request specific routing information: When it is necessary to know the information of a specific route or some specific routes, the request message will be sent together with the routing entry of the specific address. The device that receives the request will process the entries one by one according to the request message and form a response message. IPv6 address : 2001: 1111 :: 200: 5efe : 1.1.1.1 PS : It should be noted that there will be class and classless route lookup methods, which are distinguished from classful and classless routing protocols. Test Description: in R3 on of ping FF04 ::. 1 , the local interface Loopback0 Interface fast1/0 Authentication Experimental needs The stateful configuration is obtained by hand or by dhcpv6 , and stateless is obtained by prefix advertisement . Either way, the address obtained will have several time states. In the same network topology, if there are two different routing protocols, because the mechanisms of different routing protocols are different, the understanding of routing is different, which causes the isolation of routing information in the network. This is most likely a network within the same autonomous system. The entire network needs to be interoperable. What should I do? This requires the use of routing re-release.