ccna exam dumps 2018

ccna exam dumps 2018

Class and classless route lookup Group-ID This field can be 112 bits long to identify multicast groups, and 112 bits can generate up to 2112 group IDs . ! IPv6 Address(es): FE80::FFFF:FE10:4 Realize network interconnection 10.1.12.2 Associate the IPv6 network allowed by the ACL with this v6v4 address pool. The configuration of R4 is as follows: End deny any MTU is 1500 bytes Image Let's take a look at PE1 : Nolabel/404 Image ipv6 nat v6v4 source 2001: 1 :: 1 202.101.100.100 !! equivalent to 2001: 1 :: 1 this IPv6 node, "told" to Note that, in the IPv6 environment is not recommended as IPv4 treat NAT attitude Which, to use NAT . Only in V4 single protocol with V6 CISCO data forwarding method If the RA packet contains authentication information,ccna exam dumps 2018, then the authentication is correct 500 The Response packet contains a maximum of 25 routing entries. Image Certification Y Adjust DAD ( Routing Table ) , the routing table is loaded with routing entries ( routes ) learned by the router . The routing entries are composed of routing prefixes (destinations associated with routes), routing information sources, outgoing interfaces, or next hop IPs . The router obtains routing entries and maintains its own routing table in a static or dynamic manner. Then PC ping 10.1.13.0 , the data goes R1 ; Ipv6 router ospf 1 router-id 2.2.2.2 If there are no dynamic and static routes on R2 , and the configuration is as follows: Image Interface fast1/0 Ipv6 mtu 1400 Ipv6 mld join-group ff04::1 Prefix-delegation pool dhcppool lifetime 1800 600 For example , the configuration of R3 is as follows: Sequence of next hops. The acceptable range is from 1 to 65535. Interface FastEthernet0/0 ipv6 enable Ip default-network Image A small experiment about DR understanding Incoming interface: Loopback0 Anycast The link layer address corresponding to the Layer 3 address is parsed by the neighbor request ( NS ) and the neighbor advertisement ( NA ) message. Local link Ip policy route-map PBR or Www.6bone.net The router interface is configured with new and old prefixes, and both are advertised. The old prefix has a shorter lifetime, so that the nodes in the station can use two addresses at the same time. When the old prefix fails, only the new prefix is ​​used. Switching is possible. IP policy routing is disabled Wherein R2 is as follows: Image ! External BGP Ip address 132.214.1.10 255.255.255.0 Image No passive-interface fast 0/24 --- Configuration example Virtual-PPP Virtual PPP interface Access-list 1 permit any route-map PBR permit 10 match ip address 1 Tag ! PE1#show bgp vpnv6 unicast all labels tie. When B accesses the IPv6 network, the IPv6 address can be taken from the pool . In addition, in order to allow V4 network access V6 network has goals, but also made a static mapping, the 2001: 1 :: 1 mapped to 202.101.100.111 , so, B will be able to use 202.101.100.111 This IP to access IPv6 hosts A . Default router is FE80::CE00:1AFF:FEC4:10 on FastEthernet0/0 For the above problem, we can set the Fa0/0 port on the router to passive-interface . As a result, the interface will not send OSPF Hello messages. At the same time, the network segment 192.168.1.0/24 associated with the interface will still be Be declared into OSPF so that you can avoid unnecessary supplement: Image Here are a few concepts to make clear: Isis circuit-type level-1 Fa0/0 In the above example, the phenomenon we mentioned, R4 will know the route from OSPF and RIP to 192.168.1.0/24 , and finally R4 will choose OSPF route. This is a phenomenon we don't want to see in this environment, because it creates a sub-optimal path. The AD values ​​for several common routing protocols are listed below: None Ip address 202.101.12.1 255.255.255.0 Routing feedback Network 192.168.254.0 0.0.0.255 area 1 Redistribute rip metric 10 subnets distribute-list 1 out rip !! is a pool reserved for NAT-PT 1/256 110 Image 25 Tiao The header carries optional information specific to the destination of the packet, such as for exchanging registration information between the mobile node and the home agent, moving Must be a zero field. LSP Seq Num R1#show ipv6 neighbors Ipv6 address 2002:84d6:010a:0001:/64 eui-64 !! This is the gateway for the IPv6 site intranet Unassigned Image Configuring a sample RIP environment 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. Complete the configuration of the IGP protocol in the Core area. Isis circuit-type level-1 interface Loopback0 State BGP As OR1 , OR2 empathy When the IPv6 address is shorthand, multiple leading zeros can be omitted into a 0 ; State Ipv6 address 2001::FFFF/64 no ipv6 nd suppress-ra IS-IS adjacency considerations A very simple method, assuming R3 on the R3 , the first RIP to OSPF route re-release, as already mentioned, a direct problem is on R2 , due to the 192.168.1.0/24 route, and from OSPF and RIP learned, and OSPF the AD value is small, thereby resulting in sub-optimal path, so in order to circumvent this problem, we can directly in R2 deployment on the distribution list, so that the OSPF routing is not loaded into the routing table, in order to avoid suboptimal Path problem.