ccnp tshoot exam strategy

ccnp tshoot exam strategy

Show run | in route [Experiment 2 ] There are subnet routes (match); there are default routes, subnet routes Maximum life 30.30.44.45 /24 C Otherwise the flag field is obtained by some calculation (as part of the verification process) The status of STP is as follows: Address-family ipv4 unicast *> 100.0.2.0/24 If the MED attribute of a route is lost, the default setting is to set the MED to 0. However, if this command is configured, if the route with no MED value is received , the MED of the route is set to the maximum value of 4294, 9672, 95. Origin IGP, metric 0, localpref 100, valid, external, multipath Ip address 192.168.100.254 255.255.255.0 Interface vlan 20 / / There is a S entry in the routing table Configuration case Dhcp-bindings none —Does not log packets that match DHCP bindings. Content Addressable Memory Table content addressable memory Experiment 2 ^100$ Show ip bgp dampening We restore the experimental environment to the basic configuration: BGP neighbor relationships are as follows Network UDP //trunk package protocol is dot1q Border Gateway Protocol (BGP) Connected Scp: Database agent URL Y Ip prefix-list 1 permit 1.1.1.0/24 route-map test The following is the location of the TAG field in a Type 5 LSA packet : ! Received a Layer 2 frame. FastEthernet1/0 DHCP Network consolidation (same protocol or different protocols) TYPE indicates what type of frame this is, such as Ethernet, Token Ring, etc. The oldest EBGP neighbor means that it is probably the most stable BGP neighbor, so it is preferred here. Of course, this rule has poor controllability and is generally not used as a routing policy. The following happens and will skip this rule: 3.3.3.3 {100,200} i Router(config)#ip dhcp excluded-address 172.16.1.100 172.16.1.103 ? 802.1q During the above events, the contents of the following fields will not change: Version When the GW connects to the outgoing interface of ISP2 and DOWN (that is, ISP2 hangs), then switch to ip next-hop recursive, which is ISP2. Message type This command can change the properties of the aggregation route (note, only for the summary route, not for the details). If the route is marked d , it means that the route is suppressed. If it is h , it means that the route has signs of flipping. AFI (Address family identifier) Redistribute ospf 1 route-map test After aggregate-address 192.168.0.0 255.255.0.0 , R1 can learn summary routing and 2.0 We restore the experimental environment to the basic configuration: BGP neighbor relationships are as follows OK , now go back to the main class network number 172.16.0.0/16 , then we will go out and look at the picture. 172.0.0.0/8 actually shifts the mask of this class B address to the left by 8 bits , so that the network number obtained is actually a large network number including 172.16.0.0/16 . Call it supernet . Ip address 100.0.2.1 255.255.255.0 Match ip address 1 set metric 20 RootGuard Locally find a route to the neighbor and try TCP three-way handshake. Waiting for completion, the authentication is completed during TCP setup. If the TCP connection is not up, enter the Active state and try to connect repeatedly. *> 11.11.11.0/24 RouterID : 1.1.1.1 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. : 1 Wherein SW1 is as follows: About PBR 80 This is the typical recursive route of BGP . The next hop of the 3.3.3.0 route on R1 is 2.2.2.2 , further recursive 2.2.2.2 , and the associated outbound interface S0/0. Use 224.0.0.9 If multiple path originating router IDs or router IDs are the same, then the shortest path of the Cluster-List is preferred . Ip route 100.0.0.0 255.0.0.0 null0 / / Configure etherchannel , ID is 1 , the mode is desirable Circuit-ID suboption fields First of all, the route-map is a very important tool, and it is used in a wide range. When defining a route-map , we use the route-map keyword to associate a custom parameter, such as test . A route-map list by the test string unified representation, you may be in one route-map define a plurality of sequences, a sequence number to a decimal representation, such as the figure above, 10 , Ip prefix-list 1 permit 1.1.1.0/24 route-map test ? Netflow switching 0 7 15 31 On CISCO IOS , interface x interface mode: We restore the experimental environment to the basic configuration: BGP neighbor relationships are as follows Fa0/20 Example 2 : Network 100.0.1.0 mask 255.255.255.0 16 bytes We see that on R4 , there are redundant paths for the two networks of 100.0 , but they are not best . Naturally, R4 cannot use these routes. Why is it not best ? The reason is that the next hop, nexthop is unreachable. SW3#sh vtp st Show ip bgp Store the result of the CRC cyclic redundancy check 100 Network Border Gateway Protocol (BGP) Connected Interface fast0/1 (interface) ip load-sharing per-packet Offset-list Acl number in/out offset value interface Solution 3 , so the above question is, R2 should not be to its EBGP announcement neighbor 1.1.1.0 , therefore CISCO support the use of command: Network If it is injected through the aggregate-address command, next-hop is equal to the update source IP of the summary router . Default-metric x Half-duplex MAC : The physical layer operating mode provides access when half-duplex. LocPrf Route summary ! The configuration of R2 is as follows: Bgp confederation identifier 345 bgp confederation peers 64512 neighbor 4.4.4.4 remote-as 64512 AS_PATH is a recognized attribute that describes the sequence of AS numbers that will pass through to the destination network . The most important role is anti-ring. If the BGP speaker finds that its AS number is located on the route received from the external peer, the route is ignored. Backup port: Discard status. A backup of a specified port occurs when a switch has two ports connected to the same shared medium. But it must mention , this model because also store the relevant information , Statistically , approximately 65536 data streams (Flow) will consume 4MB of system buffer. When ISP1 fails, GW senses through tracking , so the data is switched to ISP2. Remarks FastEthernet0/0 - Group 1 State is Active Match ip address 1 Neighbor 10.1.23.2 remote-as 200 RIP and OSPF re-release Set ip default next-hop 10.1.12.1 Ip community-list 11 permit no-export route-map test permit 10 Next hop None The BGP update package is as follows. You can note that the length of the AS is 2 , which is " 300 , 100 ". Note that this is an ordered list of ASs . 0 100 0 Switch Virtual Interfaces ( SVI ) AS_PATH type 2 : AS_SEQENCE detailed Acl-match none —Does not log packets that match ACLs. 128 Ip route 2.2.2.0 255.255.255.0 192.168.13.1 Iso-igrp metric mobile odr ospf rip ? RIPv2 supports authentication by changing the field in the RIP message that should normally be the first route entry . In the single update message with authentication , the maximum number of route entries that can be carried is reduced to 24 . Route 2 : the AS_PATH : 500 the MED : 100 Internal RouterID : 172.16.8.1 Store the result of the CRC cyclic redundancy check When, the AS_PATH only AS300 , 400 , and thus be B router to accept a summary of the article (because do not see their own AS number appears in Non-equivalent load balancing * i100.0.1.0/24 1.1.1.1 (metric 129) from 4.4.4.4 (4.4.4.4) 10.1.23.2 from 10.1.23.2 (10.1.23.2) The default native vlan is vlan 1 Detailed rules Mtu 1500 , so it will be fragmented, then on R2 , the two fragments are reorganized. In this step, we run the BGP protocol on the above basis to complete the establishment of basic BGP neighbor relationships: Community-List. 11 the permit IP no-export (or no-export into NO-ADV ) Port-Security 32768 / / Detailed release 32 bits Match ip address 1 Metric Network consolidation (same protocol or different protocols) Router ospf 1 ... Metric Matches the network number and prefix length in the route prefix to enhance the accuracy of the match. Match abd , abcd , abcdefg, etc. On R1 , filter out 11.11.11.0/24 routes, other release FastEthernet1/0 If DHCP snooping is turned off or this is a DHCP- free network environment, such as a pure static IP address environment, use ARP 2> Dynamic inbound soft reset Set native vlan on the trunk Match ip add pre 1 100 i The configuration of R3 is as follows: The ethernet , fast ethernet , and serial interfaces of the Cisco 1600 , 1700 , 2500 , and 2600 series routers use fast switching by default . Enables debugging on the DHCP client Routing Information Protocol (RIP) A BGP neighbor has an impact only on the router. It can be understood as a weight value. The larger the priority, the higher. The value is in the range 0-65535 . As a result, when PC2 sends data to its own gateway 0.254 , since the MAC of the gateway has been spoofed into the MAC of PC1 , the data is forwarded to PC1 , and PC2 is disconnected. If PC1 is smarter, transfer the data sent by PC2 to the real gateway, and run a message analysis tool locally to snoop the data sent by PC2 . Then, in the case of PC2 continuous network, God does not know. I feel the Internet traffic of PC2 ,ccnp tshoot exam strategy, this is the man in the middle , the middleman attack.