ccnp route dumps 2018

ccnp route dumps 2018

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal, r RIB-failure, S Stale The configuration of R4 is as follows: Configure BPDUs Note that the neighbor 1.1.1.1 filter-list x weight yyy command can be used multiple times for a neighbor, that is, set different weights for different routes . But the neighbor 1.1.1.1 filter-list 1 command, in the same neighbor in or out direction, can only be used once, these two commands are very different FastEthernet0/0 Update timer update timer 201 200 100 When the packet enters the router, the router strips the Layer 2 information and then looks up the destination IP address in the CEF table for forwarding. The result of the forwarding decision will point to a neighboring entry in the adjacency list, in which the second layer of character letters that need to be rewritten can be found. Vlans allowed and active in management domain 3 : MD5 verification. 10.1.23.3 from 10.1.23.3 (3.3.3.3) 100 i Access-list 1 permit 1.1.1.0 No synchronization no auto-summary Configuring DAI logging Match ad , abcd , aaabcd, etc. 0 100 0 Half-life: 15 minutes On: channel member without negotiation ( no protocol ) Show ip route dhcp Displays routes added to the routing table by DHCP SW3#sh vtp status VTP Version capable VTP version running VTP Domain Name VTP Pruning Mode Paths: (1 available, best #1, table Default-IP-Routing-Table) Not advertised to any peer BGP must be identifiable and the update message must contain Put all the routing entries + mask into the TCAM entry, which is the "row" in the figure. The binary 0 and 1 must match, and x does not matter. When I look for a destination, for example, look for " 01101 ": 1 * 172.16.0.0/16 is variably subnetted, 4 subnets, 2 masks S* 172.16.0.0/16 [1/0] via 172.16.3.0 * The configuration of R2 is as follows: [Results] There is only 1.1.1.0 route in the routing table on R2 . EIGRP also supports tags . Ip address 10.1.45.5 255.255.255.0 BGP routing table entry for 172.16.0.0/16, version 4 The "original Ethernet frame" is up to 1518 bytes, the IP MTU of 1500 , plus the source destination MAC address is 12 , the type field is 2 , CRC4 , plus 30 bytes of ISL encapsulation, which is 1548 bytes. Switchport port-security maximum 1 UDP About the recovery of err-disable after being punished : Route summary technology background But what if the A route is an OSPF external route? Port BGP routing rules Compatibility Fast switching is superior to process switching, it uses a route cache ( route cache ) for storing information about a stream of data (Flow) specific information , Gateway redundancy technology It is used to preferentially send packets with high priority when the switch is blocked. 200 The DHCP server got an illegal address and eventually the PC could not access the Internet. Show ip b rib-failure 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. Experimental verification The data is two-way. When considering traffic, pay attention to the round trip of traffic. Frame check sequence FCS Then, the situation is different for RSTP . After receiving the sub-optimal BPDU , C will immediately send back its own BPDU , so that B can understand the topology. This mechanism is very similar to BackboneFast . Information, so that ISP1 is hanging, so the data of the PC accessing the 100 network is switched to ISP2 , and the network is constantly When no BPDU is received for a period of time and the lifetime reaches MAX age , the bridge considers that the port is connected. 5.5.5.5 If the output is too much, you can use the pipe character: sh cef interface s0/0 policy-statistics input | in 30 Passive-interface *> 100.0.2.0/24 Neighbor maximum-prefix xx restart 2 Priority , which is 3 bits long, indicates the priority of the frame. The value ranges from 0 to 7. The larger the value, the higher the priority. Topology change mechanism Maximum life Set ip next-hop verify-availability [ next-hop-address sequence track object ] // to ignore 1.0 of 100 Show interface | include bia Experimental verification When a route oscillates (continuously fails, recovers), it is assigned a penalty value. The more the swing, the larger the penalty value and the constant accumulation. Configuration example 0 packets, 0 bytes switched through the prefix tmstats: external 0 packets, 0 bytes A macro command that specifies the interface mode as access and enables the portfast feature. Bindings are just special address pools. There is no limit on the number of manual bindings,ccnp route dumps 2018, but you can only configure one manual binding per host pool. Experiment 1 5.5.5.5 Metric ...... Pipe character, logical or 1 command) only sends and receives v1 messages, v2 only sends and receives v2 messages by default . Not used (set to all 0s ) Sw1(config)#interface range fastEthernet 0/1 – 2 10.1.23.3, from 10.1.23.3, 00:07:30 ago Configuration and implementation Neighbor 3.3.3.3 update-source Loopback0 neighbor 5.5.5.5 remote-as 64513 ! BGP routing rules Note that for a link-state routing protocol such as OSPF , the message passed between routers is no longer routing information, but LSA , and the distribution list cannot filter LSAs . Therefore, to deploy the distribution list in the link state protocol, you need to be aware of: C Network Layer Reachable Information ( NLRI ) One or more (length, prefix) binary groups used to advertise IP address prefixes and prefix lengths To summarize on R3 , use aggregate-address summary-only as-set , then the BGP table on R3 : 100 Neighbor 10.1.13.3 remote-as 345 neighbor 10.1.13.3 route-map test out no auto-summary The ethernet , fast ethernet , and serial interfaces of the Cisco 1600 , 1700 , 2500 , and 2600 series routers use fast switching by default . Solution 1 , modify the default AD value of BGP so that its EBGP route AD value is greater than RIP to achieve the preferred purpose, but this solution may not be appropriate, because he will have an impression on all BGP routes, if only hope for 1.1.1.0 And 2.2.2.0 has an impact? (1) Declare the loop port 2.2.2.2224 : Disabled Port-Security Overview Interface mode, configure the interface as DAI trusted , the default is untrusted The election of the Root Bridge will not be said. This mode is the most worthy of reference . It is based entirely on other switching modes. The focus is on billing, monitoring, and network management of packets flowing through . For example, to fetch the 192.168.1.0/24 route, access-list 100 permit ip 192.168.1.0 0.0.0.0 255.255.255.0 On R2 : Show ip bgp summary Acl-match matchlog —Logs packets based on the DAI ACL configuration. If you specify the Router ospf 100 BGP stipulates that routes learned through one IBGP are not propagated to all other IBGP neighbors. This is the horizontal split rule of BGP . FIG fancy, initial condition, C interface is elected non-designated port is Block , B sent from the designated port BPDU to C . Let us first consider the case of 802.1D . When the link between Root and B fails, since the interface connected to B on C is BLOCK , it does not send BPDU to B. Therefore, B considers itself to be Root at this moment , so it goes to C. Send yourself a BPDU for Root . Because at this time , the interface of C also stores the BPDU sent by B to the previous B , and this BPDU is compared with the BPDU sent by B to B.It is better, so C ignores these suboptimal BPDUs directly . Until the Max-Age timeout, the BPDUs sent by the previous B stored on the interface of C will be aged. At this time, the interface enters LST and starts to send BPDUs , indicating that the root is Root. . At this point, B accepts the facts and sets the interface that connects itself to C as the root port.