does ccnp switch renew ccna

does ccnp switch renew ccna

routing ID . Router(config-router)# passive-interface default Router(config-router)# no passive-interface int- type int-num Mtu 1500 , so it will be fragmented, then on R2 , the two fragments are reorganized. 200 Penalize mode shutdown (enter err-disable state) while sending an SNMP trap set as-path prepend 100 of this command, the route AS_PATH prior to insertion path attributes 100 the AS number, note that the use of this control to be carefully AS_PATH method, because there may cause problems, this experiment only by elongating 100 The smaller the MED, the higher the priority Redistribute ospf 1 match external 1 external 2 So what are the solutions? Because when actually deployed, SVI mouth may be more, go to if one of the no passive-interface to configure the amount may be relatively large, so you can choose to passive-interface defaut all interfaces of all passive off, and then a single interface to no passive -interface . Next Hop Then use set comm-list 1 delete to delete, pay attention to the above community-list writing, use multiple lines, the experimental verification results are in SW1(config-if)# switchport native vlan 1 Hello time root bridge sends configuration BPDU default interval 2 is S For more detailed BGP state machine and neighbor relationship establishment process, please see the note document: " BGP State Machine and Neighbor Relationship Establishment Process" Baby giant frame is larger than the standard MTU 1500 bytes, but less than 2000 bytes You can use show ip bgp regexp to check the results of the configured regular expression. Origin: inherited the worst of origin attributes All devices complete the basic configuration and establish BGP neighbor relationships. The yellow area is the federated member AS . If a path satisfies any of the following conditions, it is not a valid candidate in the optimal path selection process. Use the dynamically learned MAC address to form a secure address entry. Link aggregation mode 5.5.5.5 View command: Show eth 1 summary / show ip route / show ip int brief Port-Security is turned off by default Ip address 10.1.12.2 255.255.255.0 The current Ethernet implementation is such a service. 1-4094 basic concept 100 Load balancing can be modified on AVG , but it is recommended to configure on all routers. Match the AS_PATH that does not contain any AS number , that is , the route in the AS . Do a test: In the above figure, R1 's fa0/0 port ip mtu is 1500 . R3 and R4 , R4 and R5 establish IBGP neighbor relationships, and R3 R4 R5 uses LOOPBACK as the update source and refers to the neighbor . Experimental verification 1 RA(as200) RB(as100) RC(as100) 201 200 100 The port enters the forwarding state, and the bridge already has the designated port. Root path cost It can contain up to 25 routing entries. !! Match the exit of the packet Establish IBGP full interconnection and close the synchronization mechanism. This method is basically used at present. But this method has a flaw, that is, if IBGP Deployment Highlights 63 ---------- Routing table Configuration example The ARP packet of the element , then these messages correspond to an entry to save buffer usage. At the same time, only one system information will be generated. * i100.0.1.0/24 The out- direction policy cannot be used separately for the member of the peer-group . It can only be used for the entire group . The in direction does not have this restriction. All neighbors in the same peer group must be all iBGP neighbors or all eBGP neighbors. Mechanism overview RIP version number: The configuration on R3 is as follows 10.1.23.2 We can R4 use the bgp always-compare-med command to force R4 compare routes MED Local The PVID is the "port default VLAN ID ", which means that a port belongs to the VLAN by default . Management distance problem 43 10.1.23.2 from 10.1.23.2 (10.1.23.2) After bgp confederation iden 345 configuration, for the federated AS , this AS is not what 64512 , but 345 This is a very typical case. In the above figure, the network environment is like this. Suppose we have two routers, R1 and R2 , connected to the server farm. The server farm uses two three-layer switches to hang the network server. We have planned two subnets for production of 10.1.1.0/24 and office 10.1.2.0/24 . R3 is the access router. R1 , R2 , and R3 run OSPF . R4#sh ip b The penalty value of all normal routes is 0 , and the penalty value is added instantaneously. When configuring the reflector, the client- to- client reflection is enabled by default, but if the client is fully interconnected, this command adds no to turn off the reflection between the clients. * i Bgp inject-map RP_mingxi exist-map RP_huizong copy-attributes If there are no dynamic and static routes on R2 , and the configuration is as follows: Preferred routes sent by EBGP neighbors (relative to IBGP neighbors), preferred federated EBGP routes in federated EBGP and IBGP Route-map nat4 permit 10 Support PVST Set excommunity cost pre-bestpath 1 20 , the cost value will greatly affect the routing principle, will become the first rule beyond the weight value Matchlog keyword in this command and the log keyword in the permit or deny ARP access-list Remarks 10.1.25.2 Offset-list Acl number in/out offset value interface Configure BPDU is 0x00 and TCN BPDU is 0x80. The number of addresses. The switch assigns MAC addresses in order Create a secondary VLAN : Route-map first acquaintance After deploying Backbone Fast , SW3 will immediately perform a series of steps to recalculate the root port as soon as it receives the suboptimal BPDU sent by SW2 . SW3 will send an RLQ request from the root port to the root bridge. RIP version number: 10.1.13.3 300 {100,200}, (aggregated by 300 3.3.3.3) Preferably the BGP NEXT_HOP nearest route V2 defaults to send v2 to receive v2 Detailed rules Access-list 1 permit any route-map PBR permit 10 match ip address 1 Configuration Bgp confederation identifier 345 This command is used to tell the AS outside the federation . My local AS number is 345. LocPrf Manually modified. Ip mtu refers to the maximum value of the ip message. OSPF , but R3 ignores this route (locally configured with a static summary route pointing to null0 ), although the LSA is still passed to R5 , which means that although R5 still has a 1.0.0.0/8 route, the packet After being thrown to R3 , it is finally discarded at R3 , so there is still a problem here. On Reviser Commands Path Ip dhcp snooping If multiple path originating router IDs or router IDs are the same, then the shortest path of the Cluster-List is preferred . AAAA03 SNAP (fixed value) The configuration of the DHCPserver is as follows: 100 i Retaining the NEXT_HOP attribute outside the federation within the federation The processing of the DHCP packet of option82 . ? 300, ( aggregated by 300 3.3.3.3 ) *>i100.0.2.0/24 Packets TYPE indicates what type of frame this is, such as Ethernet, Token Ring, etc. Route metric is 0, traffic share count is 1 CCIE.txt format: Next Hop After receiving this poisoning message, B erases 10.4.0.0 from the routing table, but it still exists in the rip database , the status is possible down , the garbage collection time ( Garbage colletion CISCO default 60S ), the route is from B. The database is erased. If you want to modify the weight , let R4 go to 100.0.1.0 and go to R3 to go to 100.0.2.0 and go to R5 ? Then the configuration is modified as follows: Neighbor R3 filter-list 1 weight 4000 First define the track object , associated with an ip sla monitor It is recommended to configure a wild VLAN as Native vlan. Basic configuration of Layer 3 switch Compatibility 37 13 100 i None | permit }} When a data frame is sent from the Access port, the switch strips the VLAN tag of the frame and then sends it out. 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 ,does ccnp switch renew ccna, this is the man in the middle , the middleman attack.