ccna test exam

ccna test exam

Authentication is identified by setting the address family ID field to all 1s ( 0xFFFF ). !! ipv4 routing, so that the route can access the tunnel destination , which is 10.1.23.3 Redirect message 137 Ipv6 route 2002:CA65:C01::/48 Tunnel0 The IPv4 address is extracted from the IP. If the destination is not a 6to4 address, then a 6to4 relay is required . More than 30s has elapsed since the last reachability confirmation was received . Exit-address-family Interface tunnel 0 Ipv6 enable 0xFFFF Automatic tunneling technology: 6to4 tunnel, IPv4- compatible IPv6 automatic tunnel, ISATAP tunnel Distance 130 10.1.12.1 0.0.0.0 1 Router(config-if)# ipv6 ospf process-id area area-id Interface fast1/0 Ipv6 mtu 1400 Metric External route tag Field name Configuring the sample EIGRP environment 0 , regarded as infinity Router(config-rtr)# poison-reverse 3 R1(config-if)#ipv6 nd prefix 2001::/64 ? Ipv6 nat v6v4 pool v6v4-pool 202.101.100.10 202.101.100.20 prefix-length 24 ipv6 nat v6v4 source list ipv6only-network pool v6v4-pool Ip route 172.16.1.32 255.255.255.224 192.168.23.3 For example , the configuration of R3 is as follows: Class and classless route lookup Next hop 10.1.13.3, FastEthernet1/0 valid adjacency Note that at this time, A can actively access B , which means that A can actively ping 2001:2::CA65:6402 this temporary address to achieve the purpose of accessing B. But if we go to clear ipv6 nat translation * on R2 , so 2001:2::CA65:6402 to / / Mark the routing table 192.168.1.0 as the default network MTU From now on, when the ISATAP host needs to access IPv6 resources, the IPv6 data packet is encapsulated in the IPv4 tunnel, that is, the IPv4 header of the ISATAP tunnel is set , and then transmitted to the ISATAP router, which is then decapsulated by the ISATAP router. Help forward IPv6 data. R2(config-router)#redistribute rip subnets BGP table version is 1,ccna test exam, local router ID is 1.1.1.1 6PE and 6VPE 10.1.34.0/24 Ipv6 address 2001:34::3/64 OSPF routing: including 3.3.3.0 , and the direct connection network segment 192.168.23.0/24 declared into OSPF is injected into the EIGRP process. This R1 Ipv6 rip RIPprocess default-information originate Ipv6 address 2002:CA65:1703::FFFF/64 Let's take the example of R1 . On R1 , the configuration might look like this: R2(config-router)# redistribute os 1 metric 100000 100 255 1 1500 Basic knowledge 10.1.23.3 Distance 130 2.2.2.2 0.0.0.0 1 R3.00-00 Interface serial0/0 Next is the re-release of EIGRP to OSPF : Solution: Avoid the problem of sub-optimal routing by re-publishing static summary routes IGRP for OSI networks Metric for redistributed routes Mobile routes ! Metric: 10 Ipv6 unicast-routing Ipv6 enable LSPID CISCO data forwarding method Network 4.4.4.4 0.0.0.0 area 0 Image [Test 3 ] Image The configuration of R2 is as follows (basic configuration and OSPFv3 ): Ipv6 enable 4 2001:2::2 server. The host will use the linklocal address as the source to send a DHCP-solicit message for the purpose of ALL_DHCP_Agents . Must be zero length On R2 and R3 , there are two OSPF processes. If shown, one is OSPF1 and the other is OSPF2 . Note that this dual process is mainly implemented on the two ASBRs R2 and R3 . The dual-stack host uses HTTP to access the tunneling proxy through IPv4 . This dual-stack host may be an end user that fills in a web page. The decimal value of the TLV is 236. Default Gateway . . . . . . . . . . . . . : fe80::5efe:2.2. 2.2%40 Set ip next-hop verify-availability The fragment reassembly function is performed by the source end itself, and the path MTU is discovered through the PMTU mechanism. The link layer supported by IPv6 requires a minimum MTU of 1280 bytes. Interface Serial0/0 Image ipv6 rip RIPprocess enable !! activates the RIP Interface fast1 / 0 The difference between set ip next-hop and set ip default next-hop is relatively simple, it is not resolved here. 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 enable When the GW loses the route to 10.1.12.2 and the connection to ISP2 is also lost, then the default route is taken. Image Image Ipv6 dhcp pool DHCP-pool Ip prefix-list ABC seq 5 permit 172.0.0.0/8 Must be a zero field. OSPF and IBGP route re-release URL representation of the IPv6 address Interface FastEthernet1/0 ipv6 enable The first 8 bits of the route must be exactly matched with the first 8 bits of 172.0.0.0 . The other bits do not care, and the mask length must be greater than 24. Note that here This is the ICMP redirect message sent by R1 to R3 . Note that the Gateway address field in the header is filled with the next hop IP that is closer to the destination than the destination . Tunnel source Serial0/0 tunnel mode ipv6ip 6to4 Ipv6 unicast-routing Now 2001: 5555 :: 5 with VPNV6 label, but also the level of data is impenetrable MPLS BACKBONE , because the P routers do not recognize this tag. Therefore, it is necessary to add another tag so that the intranet tag and data payload can be transmitted in the MPLS BACKBONE . This outer label is assigned by LDP . Adjacency table PC1 configuration: Image Ipv6 host xxx 2001::1/64 !! Let R1 generate a packet with a message size of 1500 and send it to R4. Image Neighbor 2001:45::4 remote-as 234 Ipv6 mld join-group ff04::1 If you want to turn off ICMP redirects, you need to use no ip redirects on the interface . Fast switching type 1, interface type 18 IP CEF switching enabled R2(config)# access-list 1 deny 192.168.3.0 R2(config)# access-list 1 permit any R2(config)# router rip Via FE80::FFFF:FE10:5, Serial0/0 OI 2001:12::/64 [110/192] By default, the stateless autoconfiguration announcement has a prefix length of 64 bits. The node receives the IPv6 prefix and appends its EUI-64 address to the 64 -bit prefix to form a 128 -bit IPv6 address. Unassigned Bgp router-id 2.2.2.2 B removes the IPv4 header of the packet , obtains the original IPv6 data, and forwards it to PC2 . Image ! Configure EIGRP unicast updates: RS 133 Match ipv6 address prefix-list loopb 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? After the above configuration is completed, the entire network route is passed. 2001:1111::1/128 2001:12::1 204/nolabel The GW configuration is as follows: 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.