how to master ccnp tshoot

how to master ccnp tshoot

Activate Port-Security on the interface Remove the command configured on SW1 in step 2 to restore the experimental environment. ORIGINATOR_ID and CLUSTER_LIST In the above figure, we inject OSPF routes into RIP . Traditionally, you can only set metrics on all incoming routes . However, with route-map , we can associate a defined one when configuring re-issue commands. A good route-map , in the route-map , we can create different properties or actions for different routes by creating multiple serial number statements. ? At this time, if another PC accesses the port, the port-security interface will receive a new data frame of the MAC address in the non-secure address entry , and the triggered violation action is given to the interface. Will be err-disable off. At the same time, a snmp trap message is generated . In addition, under the interface, the Security Violation Count will be incremented by 1. Bgp bestpath med confed When R2 If you want to delete multiple communities (not all), you can write multiple items in one community-list , such as Scp: Database agent URL Network Because of this self-learning and two R1 of BGP routes NEXT_HOP property 10.1.13.1 are directly connected, is reachable, Destination Address (Route Prefix): This is the destination network number associated with the route entry. A complete route prefix consists of: network number + prefix length Path Option 82 can contain multiple suboptions , and rfc3046 defines the following two: Maximum-paths 2 Version Obviously, the DHCP server is aware of the above problem, and the action it takes is to ignore this DHCP request. Therefore the PC cannot get the address. Another CASE that associates the static route of the outgoing interface : Summary The following are five types of BGP packets and packet parsing: The configuration of R4 is as follows: BPDU format and operation The greater the weight , the more priority Show ip bgp summary R3 and R4 update the routes in AS1 and AS2 to R5 and R6 at the same time . If R5 is required to go to AS1 , take route R3 and go to AS2 . Management VLAN of the Layer 2 switch [Experiment 3 ] Cancel detailed route suppression for a specific neighbor The interface will only receive updates, no updates will be sent. Preferably the BGP NEXT_HOP nearest route Trunking CCIE.txt format: Gateway of last resort is 172.16.3.0 to network 172.16.0.0 SW1#sh int trunk The idea of ​​configuration is that on R2 , you want to grab the fast0/0 port (that is, the one sent by R1 ) and go to the traffic of 30.30.30.0/24 . R1(config-router)#redistribute rip subnets tag ? That is, a site address, the MAC address, is reserved at this level to identify the only site on the network. 10.1.12.0 [110/128] via 10.1.23.2, 00:06:40, Serial0/0 Length : indicates the full length of the BGP packet, including the header. Port Mode Encapsulation Status Native vlan Fa0/20 on 802.1q trunking 1 Neighbor 10.1.23.3 remote-as 300 After completing the configuration, R2 show ip route Next Hop Floating static route 23 In CISCO IOS , CEF can hash the source and destination IP addresses and import the hashed results into a load balancing table for load balancing. This table has 16 hash buckets , each of which points to an adjacency, and multiple buckets can point to an adjacency at the same time. You can use the show ip cef route prefix internal hidden command to see: Under normal circumstances, the data is preferred to go ip next-hop , that is, go ISP2 Neighbor 10.1.12.2 capability orf prefix-list receive Network B Set tag 10 Similar configuration on R5 , just adjust the LP value If the interface is trunk , set the trunk protocol type Lease(sec) Type This can indeed avoid the suboptimal path problem, but it leaves a hidden danger: IP Routing Overview Vlan 100 The description of several fields ( ISL header) in the above figure is as follows: The MAC address is burned in the ROM of the Network Interface Controller (NIC ) . Metric 12(_34)?_56 The default keyword has a lower priority than the detail route. Weight Redirection enabled R4#sh ip b 100.0.1.0 1.1.1.0 backdoor to solve the problem, once the route becomes a local route, the AD value becomes 200 , and the router does not go to its EBGP. As OSPF2 create a route in the static summary routes ( the Null0 ), and static routes redistributed into OSPF1 modified OSPF1 administrative distance, the OSPF1 priority than OSPF2 administrative distance We look at the above chart, two switches trunk both ends of the native vlan is not the same, what's the problem? First, the vlan2 communication at both ends is certainly no problem,how to master ccnp tshoot, but the communication between vlan3 and vlan4 has a problem . The data frame sent by the user of the left vlan3 goes out of the trunk from the left switch , and is not tagged, but these data frames are sent to the right switch. It will think that these data frames belong to vlan4 , which is a problem.