9tut 200-125 dumps

9tut 200-125 dumps

RIP and OSPF re-release 0.0.0.0 . Address does not need ! Ipv6 address 2023::3/64 ipv6 nd suppress-ra Access-list 1 permit any route-map PBR permit 10 match ip address 1 !! Define the Ipv6 prefix to prepare for the announcement 10.1.13.3 3 ! We finally do another test, that is, the ISATAP host pings 2008: 8888::1 . R3 associates the route-map with the redistribution of the direct route 3.3.3.3/32 , tag#11 , and the route is passed to R2 . On R2 , the redistribution of RIP to OSPF is deployed. After the external route of 3.3.3.3 is injected into OSPF , the tag value is carried by default. 202.101.100.2 . Therefore R2 receive this IPv6 time packets, packets match found on v4map this IPv6ACL , therefore the object of the IPv6 last address 32bits translated IPv4 format (this is the IPv4 destination address), and then from V4 out a address pool Replace the IPv6 address. perfect. 2 : Clear text verification; This idea has been applied to dynamic routing protocols such as OSPF . Careful children's shoes will find that after you deploy route summarization in OSPF , it will automatically generate a summary route pointing to null0 locally . The reason is explained above. the same. Complete the basic interface IP configuration . Add the following configuration on R2 : NAT-PT configuration and principle State Use RS to request RA Image R1 goes to ping R4 and can ping . The next hop address is 128bits Image Status codes: s suppressed, d damped, h history, * valid, > best, i - internal, r RIB-failure, S Stale Ipv6 address 2001:12::1/64 router bgp 100 Image ! Configuration example R1(config-router)#distribute-list 1 out ? Ip prefix-list ABC seq 5 permit 0.0.0.0/0 le 32 IE6.0 does not support access to IPv6 sites by entering the literal ipv6 address defined by rfc2732 in the address bar . The solution is to access the domain name and modify the hosts file C:/windows/system32/drivers/etc/hosts Bgp router-id 3.3.3.3 R3 Isis circuit-type level-1 !! Modify RIPng management distance, default 120 IS-IS Level-1 LSP R4.00-00 Followed by ACL to match traffic. 2001: 5555::5/128 Image Router(config-rtr)# timers update expire holddown garbage-collect Ipv6 address 2001::1/64 Ipv6 address 2001:0001::FFFF/64 Bgp router-id 1.1.1.1 The range of TAG values ​​in the external LSA Carrying the network prefix is 128bis , rather than 32bits OSPF 's neighbor command is not the same as EIGRP . After testing, in the Ethernet environment, directly refer to the neighbor , and still send multicast hello. Image The configuration of CE1 is as follows: Ipv route 2222::/64 fastEthernet 0/0 FE80::CE00:1AFF:FEE4:0 32 bits Global command, statically specify RP R3 associates the route-map with the redistribution of the direct route 3.3.3.3/32 , tag#11 , and the route is passed to R2 . On R2 , the redistribution of RIP to OSPF is deployed. After the external route of 3.3.3.3 is injected into OSPF , the tag value is carried by default. ND DAD is enabled, number of DAD attempts: 1 Ipv6 router rip RIPprocess exit R2(config-router)# distribute-list 1 in fa0/0 ! Interface tunnel1 Ipv6 enable Multilink Multilink-group interface Must be a zero field. Www.6bone.net Ip unnumbered fastEthernet 0/0 ipv6 enable None uses the distribution list or the access control list deny 521 port. IPv4 ! 2023::3 Ip sla monitor schedule 1 life forever start-time now Image Redis static route-map cisco 1111 1110 11xx xxxx NAT-PT RS packet initiative initiated by the host,9tut 200-125 dumps, RA message from the host to the default 200S (receive periodically send RS will be sent immediately). ! Network 3.3.3.3 0.0.0.0 area 0 This flag is also related to stateful autoconfiguration. When it is not set (by default), nodes should not use stateful autoconfiguration mechanisms to configure parameters other than IPv6 addresses. ! Further, it is found that P is 430.4.4.4 , the label 301 is allocated . Therefore, when PE1 receives the data packet and goes to 2001:5555::5 , the data packet is pressed into two layers, and the outer label value is 301 , the inner label value is 403 . Configuration Example 3 (at a single routing protocols -OSPF ) A quick look at: Basic // Old prefix Image Next Hop 2023::3 Route-map Distance vector routing protocol R2(config-router)# distribute-list 1 in fa0/0 ALG and IPV4 single protocol network host B maintain an IPV4 session. ALG is responsible for session conversion between IPV4 and IPV6 . This ALG has dual stack support capabilities. For example, suppose ALG is a dual stack and can act as a server for SMTP ALG . Then A can be based on IPV6 of Multicast 13 Cisco Express Forwarding Tag information set local tag: 100 Since Source Address Ipv6 prefix-list loopb permit 2003::3/128 router bgp 12 Set ip next-hop recursive Image Ipv6 enable Interface tunnel 0 Since Source Address Router Announcement RA Ipv6 unicast-routing interface Loopback0 *> 2001:12::/64 In an IPv6 over IP manual tunnel, the local tunnel and the address of the peer tunnel are configured on the two ends of the tunnel, that is, the two dual-stack routers. Therefore, the scalability is poor. To facilitate the deployment of manual tunnels on IPv4 networks, the IETF defines a tunneling proxy mechanism. Router eigrp 100 Route-target import 234:4 Update it; however, it does not send its secondary address 11.0.0.0 segment from fast0/0 to R1 (unless the split horizon is turned off). Route redistribution is directed. The routing information of the A routing domain is injected into the B routing domain. We need to configure it in the process of the B routing protocol. For example, to redistribute other routing protocols to RIP , then configure. As follows (republishing to other routing protocols is similar): IPv6 routing Different prefixes (network number + mask, indispensable), belonging to different routes in the routing table The keyword should be added, otherwise the main class route will only be re-published. The GW configuration is as follows: No bgp default ipv4-unicast bgp log-neighbor-changes neighbor 2001::1 remote-as 12 FastEthernet1/0 R1#show ipv6 ospf neighbor detail Requested node multicast address corresponding to each unicast and anycast address used ! Set ip next-hop recursive 10.1.12.2 No ipv6 rip RIPprocess enable Ipv6 address 2001:12::1/64 router bgp 100 Matches the network number and prefix length in the route prefix to enhance the accuracy of the match. Application prefix list !! is a pool reserved for NAT-PT The configuration of R2 is as follows: For area1 in the IPv6 prefix summarize, reduce routing entries NAT-PT configuration and principle IPv6 application Associate route-map when route is republished (typical case) Note that on R2 we did a next-hop-self on R1 , so the route NH passed from AS300 changed. However, in some network environments, using Linklocal to establish a BGP adjacency may cause some problems with NH . After all, the Linklocal address is only valid within the link. Therefore, you can use route-map and use set ipv6 next-hop to modify these BGP routes. NH property. 6to4 automatic tunnel The bit address indicates the source and destination IPv4 addresses of the tunnel endpoint . Mpls ip BVI Bridge-Group Virtual Interface The configuration of R2 is as follows: If the above is replaced by EIGRP , the phenomenon is the same as RIP , R1 will declare 1.1.1.0 into EIGRP. Interface Loopback0 Image System Id Neighbor 2001:45::4 remote-as 234 Static route Router ospf 100 Type echo protocol ipIcmpEcho 10.1.1.2 source-ipaddr 10.1.1.1 frequency 10 203/nolabel IPv6 transition technology Enhanced Interior Gateway Routing Protocol (EIGRP) ISO IS-IS The next hop of the A segment becomes R4 , which results in a suboptimal path. Also, on R3 , the re-release of process 1 to process 2 fails. or In IPv6 , the determination of the link layer address of a node is done using a combination of NS , NA, and the multicast address of the requested node. This ratio IPv4 's ARP Ipv6 address autoconfig [default] Ip address 10.1.12.1 255.255.255.0 2001::1 1. Option field Version 2 Image Ipv6 enable Track 2 rtr 2 reachability Use show ipv6 neighbors to view neighbor entries. We finally do another test, that is, the ISATAP host pings 2008: 8888::1 . Image In R2 on a simple look: The public network address of the ipv4 applied by the R1 router is 202.101.12.1 ; the public network address of the R3 application is 202.101.23.3. # 102.54.94.97 Neighbor 2023::2 activate exit-address-family Offset list !! GW has no other configuration about routing For more comprehensive analysis of IPv6 OSPF , please see "Red Tea Three Cups OSPF Technical Notes" 12 Router(config-router)# no adjacency-check For a comprehensive explanation of IPv6 multicast , please see the "Black Tea Three Cup Multicast Technical Notes" Image CISCO data forwarding method :: After PK , there is no doubt that the default route pointing to telecommunications appears in the routing table, and points to the default route of the education network, "wacky" to hide. When the default route to the telecom is invalid, it disappears from the routing table. At this time, the default route to the education network is "floated". Standard ACL Address-family ipv4 010x xxxx xxxx xxxx Image The configuration of CE1 is as follows: R2 RIPv2 After PK , there is no doubt that the default route pointing to telecommunications appears in the routing table, and points to the default route of the education network, "wacky" to hide. When the default route to the telecom is invalid, it disappears from the routing table. At this time, the default route to the education network is "floated". Interface fastEthernet 0/0 ipv6 ospf 1 area 0 Ipv6 access-list ipv6only-network permit 2001:1::/64 any Route-map test permit 20 match ip address 2 Ipv6 router ospf 1 router-id 5.5.5.5 Ipv6 address 2001:12::2/64 However, if the R1 release carry on a tag external routes, and R2 re-released on OSPF into RIP , tag lost: Note that, EIGRP the metric is a mixed type, metric. 1 100000 100 255 1500 Parameters specified here, from left to right is the bandwidth, delay, load, reliability, the MTU . It can be flexibly set according to actual needs. After the above configuration is completed, R2 will be in the routing table. Image Request message: You can request the entire routing table or request specific routing information. BGP table version is 5, local router ID is 2.2.2.2 R1(config-router)# network 192.168.12.1 0.0.0.0 area 0 R1(config-router)# distribute-list 1 out The verification of Layer 2 and Layer 4 is already robust enough, so IPv6 directly cancels the Layer 3 check of IP . Ip route 172.17.0.0 255.255.255.0 192.168.12.1 None Ipv6 dhcp pool DHCP-pool dns-server 2000::8 domain-name HelloWord exit Set ip next-hop 10.1.1.2 10.2.2.2 set ip next-hop verify-availability interface fast 1/0 0 00:00:39 Image Set tag 10 11 Image Image Image Ipv6 enable The configuration of R2 is added as follows: Y In any IS-IS network, the L2 router responsible for inter-area routing must be contiguous. Similarly, for IPv4 single protocol environments, IPv6 single protocol environments, or IPv4-IPv6 environments, L2 routers must be contiguous. Otherwise a routing black hole will be generated. Roo also received the request, and the request it received from the network segment 172.16.20.0 , and the table found that the network that the route to the host Milne is located ( 172.16.21.0 ) is different from the network that received the arp request packet. And the interface opens the arp proxy, so reply to its own interface mac. 0/0/0 10.1.12.2 At this point , the route 1.1.1.0 is seen on R3 , which contains the next hop attribute, and the previous one. [Experiment 1 ] There is a main class route; there is a default route, and the main class route is taken. Interface FastEthernet1/0 Image We can use the ip route-cache command , is enabled on the interface fast switching show ip cache to check the fast switching -related information . Mechanism involved 1/1024 Ip cef Example: If the outbound interface is a broadcast interface, it may impose an additional burden ( ARP ) on the nodes under the interface or cause potential problems. Next hop ! !! Modify RIPng management distance, default 120 Then call the track object in the route-map Image Look at the above picture, the gray space 172.16.0.0/16 , this network number, we call the main class network number , the so-called main class network number, meaning the network number, according to the IP address category to which it belongs , corresponding to The network number obtained after the default subnet mask length. Such as 172.16.0.0 this is a IPv4 !! This IPv4 address is the destination address of the ISATAP tunnel ! 1/128 It is valid only when the router (or Layer 3 switch) disables the routing function ( no ip routing ); 1111 10xx xxxx xxxx Ipv6 unicast-routing interface Loopback0 Ge ge-value If you do the following configuration on R2 : ! Of course, you can also associate the route-map after re-issuing the command and set the tag in the route-map . ISATAP tunnel Transmit limit accumulator 0x0 (0x0) IP MTU 1500 However, B appreciated local interface MTU is 1300 , then a reply ICMPv6 type = 2 message to the Source response Router ospf 100 Experiment 2 ISATAP is an IPv6 transition mechanism that is very easy to deploy and use . In an IPv4 network, we can do it very easily Ip sla monitor 1 The above is the type137 message of ICMPv6 sent by R1 to R3 . We need to look at the target address . This is the linklocal address of R2 , which is the next hop that R1 wants to tell R3 that is closer to the target 2222::1 than itself. Neighbor FE80::CE01:8FF:FED8:10 remote-as 12 Route-map test permit 10 Wherein R2 is as follows: The 64btis interface identifier generated by the ISATAP host and the ISATAP router can be further used to construct the tunnel interface. 200 Ivv nd other-config-flag In any IS-IS network, the L2 router responsible for inter-area routing must be contiguous. Similarly, for IPv4 single protocol environments, IPv6 single protocol environments, or IPv4-IPv6 environments, L2 routers must be contiguous. Otherwise a routing black hole will be generated. !! Note that on IPv6- capable PEs , IPv6 cef must be open. Ipv6 enable The 10.1.10.0/25 subnet cannot be updated because the subnet and the update source interface belong to the same main class network, but the masks are different. When 10.4.0.0 is hanged , C will immediately send a route poisoning message ( 10.4.0.0 16 hops) and then advertise it; Image Used to limit the time that the route staying in the routing table has not been updated. Ipv6 address 2001:0001::FFFF/64 Adjust IPv6 nd parameters Reserved unspecified, loopback, IPv4 compatible address technical background Image IPv6 IS-IS FE80:: 5EFE:202:202 2001:1111:: 5EFE:202:202 Border Gateway Protocol (BGP) Connected Ipv6 unicast-routing interface fast0/0 Route refresh: advertised and received (old & new) Address family IPv6 Unicast: advertised and received ipv6 MPLS Label capability: advertised and received LSP Holdtime RIP database ! Redistribute ospf 1 metric 3 Both [Note] The process name is valid locally. If the two interfaces are enabled on the Router and RIPng is enabled with two different process names, the two processes are independent of each other. Ipv6 address 2002:CA65:0C01::FFFF/64 1 Internal EIGRP Router ospf 1 Ipv6 unicast-routing Then call the track object in the route-map The IPv4 public network address obtained by A is 132.214.1.10 , and B is 206.123.31.200 . 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: ) None This fulfills the demand. Situation 2 Summary Ipv6 address 2001:0001::FFFF/64 ipv6 rip RIPprocess enable Two-way re-release on R2 . Under normal circumstances, R1 can learn 3.3.3.0 , and R3 can learn 1.1.1.0. Interface FastEthernet0/0 ipv6 enable Eliminate routing loops by horizontal splitting Set as-path set community Ipv6 address 2001:34::4/64 This global configuration command enables PBR to take effect on locally originated traffic. 10.1.12.2 Next hop address: The IP address of the interface of the neighboring router that needs to pass to reach the destination . Ipv6 prefix-list test seq 5 permit 2001:3::/64 Ipv6 router rip RIPprocess RS 133 refers to the use ICMPv6 TYPE133 Code0 the RS message, similar to the other messages. To verify which outbound interface is used for a particular traffic in destination-based load balancing, use Image Ipv6 ospf 1 area 1 0400 – 05FF IPv6 routing None When ISP1 fails, GW senses through tracking , so the data is switched to ISP2. None Ipv6 nat v4v6 source 202.101.100.2 2001:2::2 When track1 is true , that is, 10.1.1.2 is reachable, the data of the PC accessing the 100 network is lost to 10.1.1.2 . If track 1 is hung, the next next-hop is switched. First, R2 itself obtains a 6to4 address space through its own IPv4 public address mapping . R2 assigns itself an address in the 6to4 IPv6 address space ( 2002:ce7b:1fc8:1::1 ) so that other 6to4 routers can find it. Yourself. For R1 such a 6to4 router, simply add a default route: Ipv6 route :: / 0 2002: ce7b: 1fc8: 1 :: 1 can be, so that R1 is connected IPv6 islands user wants to access non- 6to4 of On an IPv4 network, the data is matched by this default route. The next hop is 2002:ce7b:1fc8:1::1 , which is a 6to4 address, so R1 first obtains its corresponding IPv4 address according to this address: 206.123.31.