are ccna dumps reliable

are ccna dumps reliable

Routing strategy Complete basic IP configuration The front is to use static routing. If dynamic routing protocol is used, the situation is different. For example, IGRP or EIGRP , the network specified by the ip default-network command must be obtained through IGRP or EIGRP (declaration, learning or redistribution). ), the default route can be dynamically passed to other protocol routers. Transition mechanism from IPv6 single protocol network to IPv4 single protocol network Image You can configure a CISCO router as a 6to4 relay with an arbitrary IPv4 prefix : The prefix list contains the serial number, matching from the smallest NEXT_HOP : Indicates an IPv6 address,are ccna dumps reliable, or an aggregatable global unicast address, or an aggregatable global unicast address and its next hop local link address. Kanga sends an arp request, requesting Milne 's mac , then Image The GRE tunnel packet capture is as follows: Ip route 10.1.12.0 255.255.255.0 10.1.1.2 On R1 , only the summary route 32.0/21 is filtered, and all the detailed routes are released. If a standard ACL is used to match the route, how to write it? An IPv6 packet consists of a basic header plus zero or more extension headers plus an upper layer protocol unit. The meaning of several fields: Network Image Environmental description FastEthernet1/0 As defined in RFC3053 , a tunneling agent is an external system, not a router. It acts as a server in an IPv4 network and accepts tunnel requests from dual-stack nodes. Ip route 172.16.1.0 255.255.255.0 192.168.12.1 Ip route 10.1.2.0 255.255.255.0 10.1.254.1 Neighbor FE80::CE02:8FF:FED8:0 update-source FastEthernet1/0 Image Each RIP message contains routing entries, up to 25 , and more than one message is required. Router(config-rtr)# timers update expire holddown garbage-collect Image Ipv6 enable twenty two Image Ipv6 unicast-routing Test phenomenon: unable to ping . SMTP sends an email to this mail server. Of course, B can use the IPV4 session to read. [Experiment 6 ] There are subnet routes, the subnet route prefix length is different (matching and mismatching), and the matching route is taken. FastEthernet0/0 [Test 1 ] Situation 2 Ipv6 address 2001:1::FFFF/64 ipv6 nat Also pay attention to the sending conditions of ICMP redirects here . Also note, R3 this default route on if configured to associate an outgoing interface, then it can not be observed phenomena redirection, as to the reason, you know, proxy ARP thing. Image Router bgp 300 address-family ipv6 Network 4.4.4.4 0.0.0.0 area 0 Router(config-router)# distance ospf external ad1 inter-area ad2 intra-area ad3 Ipv6 address 2001::1/128 These modes generally only be on high-end Cisco device applications , such as 7200 series routers . Or 12,000 Series routers . Command : ip route-cache optimum show ip cache optimum Complete the configuration of the IGP protocol in the Core area. Based on agreement Tag information set local tag: 100 The end user configures the tunnel through the address obtained by the dual-stack host, and the tunnel server applies the remote configuration of the tunnel locally. 3 In stale transmitting a packet through the state, and 5s no reachability confirmation within every 1s retransmission request active neighbor reachability confirmation request until it receives an acknowledgment Router ospf 1 RIPv1 , v2 Image [Test 4 ] 1 !! 4.4.4.4 is also PE2 Image Redistribute rip subnets route-map test Ipv6 dhcp server DHCP-pool !! Enable ipv6 DHCP on the interface and call the pool - Corresponding hwidb fast_if_number 4 Corresponding hwidb firstsw->if_number 4 Internet address is 10.1.12.2/24 Image Route-map test permit 10 There is a network environment in which two IPv4 networks are connected by a pure IPv6 provider, and then IPv4 routes have to be exchanged through BGP IPv6 peers. Because BGP4+ supports IPv4 and IPv6 protocol clusters, this is perfectly fine . Disadvantages: Each device needs to be configured with two protocols, which need to occupy resources. The device needs to store two routing tables (if it is a router), and each protocol needs to be processed independently. The implementation of diversified strategies at the level has been able to achieve very good path control effects, and it is a very scientific and highly recommended method to control the flow of data by controlling routing. In addition to this, there are many, such as: Bgp router-id 2.2.2.2 More than 30s has elapsed since the last reachability confirmation was received . Image Ipv6 nd dad attempts x Image 10.1.12.2 Access-list 1 permit any route-map PBR permit 10 match ip address 1 1/1024 The dual-stack host on the IPv4 network first uses HTTP to access the tunnel server through IPv4 . The end user fills in the web page and obtains the IPv4 and IPv6 addresses from the tunnel server. The update is mainly the newly added two TLVs that carry IPv6 routing information . The BGP4+ configuration of R3 is as follows: 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 The node has two protocol stacks, IPv4 and IPv6. RFC1723 Source starts to send IPv6 packets using MTU=1300 , and the packets reach the destination smoothly. Image In a real network environment, we may encounter a situation where there are two or more routing protocols in a network environment, for example: Next, we R3 up of ping 2222 :: 2 , this action will cause the R3 transmits an ICMPv6 packet, source 2000: 123 :: 3 , the purpose of 2222 :: 2 , the packet will be sent to R1 , when R1 After receiving, he found that the packet will be forwarded from the interface that received the packet, and the next hop IP is on the same network segment as the interface, proving that the next hop is better than itself (distance from the destination) closer).