ccnp tshoot 300-135 questions

ccnp tshoot 300-135 questions

R2(config)# access-list 1 deny 192.168.3.0 R2(config)# access-list 1 permit any R2(config)# router rip Passive: passively wait for other side to ask Finally: R4#sh ip b The maximum number of secure MAC addresses allowed by default is 1 0 ? UDLD Bgp fast-external-fallover 100 i Paths: (1 available, best #1, table Default-IP-Routing-Table) Flag: 0x820 r >i1.1.1.0/24 What is the routing table for R3 ? In fact, without any impact, R3 can learn the routing of the entire network. As for why, I believe that it has been explained very clearly. SW2(config)#ip dhcp snooping database ? Recognized On: channel member without negotiation ( no protocol ) The EBGP route should be better. I saw R5 and went to see R3 : Set metric 1111 ? Once the portfast port is connected to the device, the interface can bypass the listening and learning states and enter the forwarding state directly . The BGP update is carried by the TCP protocol. The port number used is 179. Because BGP requires TCP , there must be a BGP peer . Match ip address prefix-list 1 2 STP topology change Set the interface to nonegotiate and do not send DTP frames. If the configuration is non-negotiated, you must manually configure the interface mode as access. Then according to our thinking, on the R4 should be able to see the choice of 100.0.1.0 is R3 is 3.3.3.3 , go to R2 10.1.12.2 These three representative routing re-release models. To maintain a consistent BGP topology, the RR does not modify certain BGP path attributes when it reflects routes . These attributes include NH . Network xxx mask yyy route-map zzz Next Hop BGP routing table entry for 172.16.0.0/16, version 3 Sh ip bgp neighbors {address} advertised-routes R1(config)# ip prefix-list 11 seq 5 deny 11.11.11.0/24 R1(config)# ip prefix-list 11 seq 10 permit 0.0.0.0/0 le 32 R1(config)# router bgp 100 Switch(config-if)# switchport port-security R1 is in AS100 and routes 1.1.1.0/24 to EBGP neighbor R2 . routing Other configuration The configuration of SW2 is as follows: 10.1.13.1 ? * i ! 100 Summary 29 Ip prefix-list ABC seq 5 permit 0.0.0.0/0 le 32 802.1q | Ip sla monitor responder No BGP session will be established before xxx Interface vlan 10 In the route-map in the set community TCP Switch(config-if)# switchport mode encapsulation {dot1q | ISL} 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 [Experiment 6 ] There are subnet routes, the subnet route prefix length is different (matching and mismatching), and the matching route is taken. The configuration of R1 is as follows: The vlan number supported by ISL is 1-1005 (the default is allowed to be normal), 802.1q is 1-4094 (all normal and extended by default), so mapping is required when passing through the 802.1q and ISL trunks . R1 releases 10.0 , R2 releases 20.0 , and R3 issues 30.0 routes. Next, look at the different commands (keywords) configured on R2 . These BGP routes are learned by the specific router after the AS_PATH changes: 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 BVI Bridge-Group Virtual Interface Server, however, if there is a private DHCP server in the intranet , then it will affect the network, for example, the client is private. 16 bits Exclude one or more addresses from the address pool (such as gateway IP, etc.) to avoid assignment to clients DHCP static address binding By default , Cisco routers enable fast switching or optimal switching or cef switching instead of process The VTP Server and clients synchronize the database with the highest revision number; Port-channel Ethernet Channel of interfaces Encapsulation Status // EBGP neighbor 100 i Enabled by default, if an interface DOWN up, BGP answer immediately suspended. 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 . R2#sh cef interface s0/0 policy-statistics input Serial0/0 is up (if_number 4) Other configuration commands We found that both O , O IA or with the FA 's OE2 routes are redistributed into BGP later, these BGP routes Next-hop are they in OSPF the IGP next hop. At the same time, the network segment where the OSPF direct connection port is activated locally will also be injected into BGP . After the injection, Next_Hop is the router (BGP update source IP) . Type of verification: basic configuration STP (PVST) Switch(config-if)# switchport port-security Therefore, when the deployment is re-released, this problem needs special attention. As for how to avoid the problem, I will introduce it in the following content. Path Reply to ISP1 , GW perceives through tracking , and the data is switched back to ISP1. 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 . It means for VLAN100 traffic, not to log the ARP ACL discarded packets match FastEthernet1/0 Case: Problems in the environment of education and telecommunications dual-export NAT network through PBR About the recovery of err-disable after being punished : 5 Knowledge review When a violation occurs, the interface enters the err-disable state. Both SW1 and SW2 can learn, and three-year-olds can do it. ? FastEthernet0/0 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 . LocPrf The possible values ​​for the first column are as follows: Other configuration Router(config-router)# Any parameter 5.5.5.5 V1 uses broadcast, which is sent every 30s by default , using UDP port 520 (source, destination port) 100 Windows system), at the same time reply a Gratuitous ARP response to inform the peer that there is a duplicate IP address. For Dot1Q MTU = 1522 / / See which routes are suppressed Set metric 1111 Sw1(config-if-range)#switchport mode trunk 10.1.12.2 Network 100.0.1.0 mask 255.255.255.0 Since the physical layer and the data link layer of the Ethernet are related, a specific data link layer needs to be provided for different working modes of the physical layer. This brings some inconvenience to the design and application. 20 ... (maximum 25 ) Packets Protocol mechanism Network 3.3.3.3 0.0.0.0 area 0 * i ARP ACL and relative priority of DHCP snooping database entries Adding the summary-only parameter will only pass the summary route, and the detail route will be suppressed. The summary route generated in this case will lose the AS_PATH attribute of the underlying detail route , so there may be some hidden dangers. When the router is adjacent to the host, they learn in some way. 2 : Reponse message, send all or part of its routing information, one Two-way re-release on R2 . Under normal circumstances, R1 can learn 3.3.3.0 , and R3 can learn 1.1.1.0. Ip route 0.0.0.0 0.0.0.0 192.168.23.3 Port Mode Encapsulation Status Native vlan Fa0/20 on 802.1q trunking 1 / / Map the port to pVLAN RFC1721 Note that there must be three layers between the DHCP server and the trunk interface. Because the unicast packet is relayed,ccnp tshoot 300-135 questions, the source address is the trunk interface configured with ip helper-address . Therefore, when the DHCP server returns the packet, the destination IP address of the packet. This is the interface IP of the interface configured with ip helper-address . The MAC address pool of the CISCO CATALYST switch can hold up to 1024 addresses. The model of the switch determines the number of available MAC addresses . Not all Catalyst switches can support such multiple MAC addresses. The configuration of SW2 is as follows: Layer 2 switching Redirection enabled ARP 10.1.34.0 is directly connected, Serial0/1 BGP routing table entry for 172.16.0.0/16, version 3 100 i Therefore, we still need to keep the AS_PATH of its details on the summary route. As for the order of the AS number in the AS_PATH of the reserved detailed route , it is not important, because we only need the AS number for the purpose of anti-ring. It is. Therefore , the summary route generated by R3 actually carries two AS_PATH types, one is AS_Seq , the value is 300 , the other type is AS_set , contains two AS numbers of {100,200} , and is unordered. So the AS_PATH received on R4 is 300 (100,200} combined . It is worth noting that the AS number in this bracket is only counted as one hop when performing the AS_PATH calculation. For the verification of this point, please see the section on routing rules.