ccnp switch dumps

ccnp switch dumps

( Well-known ) The ORF feature is very simple, that is, R2 pushes this list to R1 , so that this strategy performs filtering on the R1 side, as shown below. If the output is too much, you can use the pipe character: sh cef interface s0/0 policy-statistics input | in 30 3.3.3.3 The port mac of the Layer 2 switch is used here :) Forward Port-Security deployment considerations Feature VLAN: 8 bits Ftp: Database agent URL Neighbor 10.1.23.3 remote-as 300 neighbor 10.1.23.3 route-map test out Path attribute BEGIN Both R1 and R2 inject 100.0.1.0 and 100.0.2.0 into BGP using network . We look R5 are BGP table: Port Network Ip prefix-list huizong permit 172.16.0.0/16 ip prefix-list mingxi permit 172.16.1.0/24 ip prefix-list xiayitiao permit 10.1.24.4/32 route-map RP_mingxi permit 10 The election of the Root Bridge will not be said. The configuration of R4 is as follows: Come to the same topology change. There are 2 forwarders (1 active) RIP Version 2 Protocol Analysis BGP table When we set the number of MAC addresses allowed on the interface to 1 and set a secure address for the interface, then this interface will only be for that MAC. R1 and R2 run RIP ; R2 and R3 establish OSPF neighbor relationships. In the initialization case, there are four entries in the routing table of R2 , as shown in the figure above, and there are only two entries in the routing table of R1 , that is, two direct links. So now, we do the re-release action on R2 , and redistribute the OSPF route to RIP , then the configuration is as follows: R2#sh ip b 100.100.100.0 Using ICMP protocol to detect 10.1.1.2 reachability (source address 10.1.1.1 to ping10.1.1.2 ) Track Object 's ID is 1 , associated to ip sla monitor 1 If an OSPF in- process route cannot be summarized: 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? ? Fast switching type 1, interface type 18 IP CEF switching enabled Redundant RR environment Configure RIP unicast updates: Communicates with only promiscuous ports Routing, then: The process of processing a VLAN frame by a trunk port is as follows: Path control ? Ip community-list 11 permit 100:11 The ETHERNET_SNAP standard was developed by the IEEE 802.1 committee to ensure interoperability between IEEE 802.3 LAN and Ethernet. It can contain up to 25 routing entries. BGP table on R6 : Note that the above two configurations are invalid for manually configuring the secure address of switchport port-security mac-address 00b0.9999.9999 . That is, the static security address entry configured by the above method never times out. 100 i Cause: After the ARP Request is sent , the ARP Reply is prepared for a large number of reasons: scanning on the same network segment (host), scanning across network segments (network device) In the nogotiate permanent link aggregation mode, the neighbor must be manually configured as a trunk gate and no DTP frame is sent . Generally used when the peer device does not support DTP . We restore the experimental environment to the basic configuration: BGP neighbor relationships are as follows 100 Port Vlans in spanning tree forwarding state and not pruned The election of the Root Bridge will not be said. ^10. Ip as-path access-list 1 permit _1$ / / Used to match the BGP neighbors passed to my summary route , here is the IP of R4 Port SW3#sh vtp st AD value and back door ! Rl , R2 , R3 running the OSPF , R3 routing table is as follows: Client-identifier unique-identifier R2#sh cef interface s0/0 policy-statistics input Serial0/0 is up (if_number 4) Route-map test permit 10 match ip address 1 R4 knows that to go to the destination, it needs to go to AS100 via AS300 to get the purpose. DAI configuration policy Two-point two-way routes redistributed problems External BGP BGP * i Interface f0/3 Ip as-path access-list 1 deny _600$ Must be zero Set traffic-index 30 Therefore, in fact, the ORF is a feature of the route-filtering by means of the prefix-list . The prefix-list is pushed locally to the peer to allow the peer to perform routing prefix filtering. 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. If R1 turns off auto-summary and network 1.1.1.0 , the declaration is unsuccessful because there is no mask for class declaration. Note that although R4 passes the route 400 {100 , 200} , the AS in the braces is only calculated as an AS in the AS_PATH calculation. Therefore , the two EBGP routes received on R6 have the same AS_PATH length. Finally, R6 The route of the oldest EBGP neighbor will be preferred . BGP Design and Implementation Recommended Reading Next turn on DAI on SW1 : The TAG field ( 32bits ) is only present in the external LSA . Route metric is 0, traffic share count is 60 Store the result of the CRC cyclic redundancy check Then when PC1 receives this Gratuitous ARP , because the senderIP conflicts with itself, then a bubble pops up locally (if it is description Multilink Multilink-group interface After the above configuration is implemented, R1 will filter out the 3.0 route. Tag rewrite with Fa0/0, 10.1.12.2, tags imposed: {} After PK , there is no doubt that the default route pointing to telecommunications appears in the routing table, and points to the default route of the education network, "wacky" to hide. When the default route to the telecom is invalid, it disappears from the routing table. At this time, the default route to the education network is "floated". Then the NH of this BGP route is the interface IP of the announcer . EBGP neighbors generally use the other party's direct interface IP to refer to the neighbor . However, if the EBGP neighbor is established by using the LOOPBACK interface , the NH is the update source address of the EBGP neighbor. (Of course,ccnp switch dumps, the EBGP neighbor does not use the LOOPBACK interface to establish a neighbor.) //trunk package protocol is dot1q Solution: Modify the routing protocol administrative distance Metric 10.1.13.1 Ip community-list 11 permit 100:11 route-map test permit 10 DHCP Snooping Binding Database Network That is, a site address, the MAC address, is reserved at this level to identify the only site on the network. Figure 1 R1 , R3 while the R2 release 13.13.13.0 of BGP routing, do not have any strategy RFC1724 That is to say, R5 goes to 100.0.1. and 2.0 each has two paths, which are through 10.1.25.2 and 3.3.3.3 , and finally R5. Federal configuration and implementation Bgp confederation identifier 345 neighbor 4.4.4.4 remote-as 64512 What is an invalid arp entry: Set the interface cost Directional strategy. Matches the network number and prefix length in the route prefix to enhance the accuracy of the match. Then, if an OSPF process (this sentence may not be rigorous, everyone understands what I mean), the route can not be summarized, such as the following figure. ip route 172.16.1.0 255.255.255.0 192.168.12.1 !! go subnet route Bgp dampening half-life reuse limit limit limit maximum inhibition time Basic VLAN communication principle The DHCP server receives the DHCP message. If the server can identify option82 , it will assign an IP address to the client according to the information carried in option82 and select the corresponding policy. The server then responds with a DHCP packet, which also contains option82 information. 20 . 246 1 i *> 11.11.11.0/24 EBGP load balancing is verified. Only when the routes originate from different EBGP neighbors in the same AS and meet the equivalent load balancing, you can configure the maximum-paths x to implement load balancing. For example , the configuration is based on different ASs . The command is also invalid 100 Access-list 11 permit any route-map adv permit 10 match ip address 11 router bgp 12 Write multiple commums in the same line, such as ip community-list 1 permit no-export 12:1111 does not take effect, can not delete these two values 15 5.5.5.5 In the one local BGP routes advertised to EBGP the Peer time, whether they carry MED values , need to be determined under the following conditions ( not EBGP 1.1.1.1 (metric 129) from 2.2.2.2 (2.2.2.2) Shows all routes received from the specified neighbor (a subset of the previous command, shown here is the route remaining after the inbound policy is executed) These three representative routing re-release models. 20 4 Match ip address prefix-list The route weight generated by the local network is 32768. Represents a range. Matches only one of the characters contained in the range. If there is a tag , it is determined whether the trunk port allows the VLAN frame to enter. Allow the next step, otherwise discard the frame. Two-point bidirectional routing re-release implementation 98 16 bits Revision record Mapping is only valid locally Network 11.11.11.0 mask 255.255.255.0 Routing Protocols Ip dhcp snooping vlan 10 Interface fast0/1 R2 Ip address 192.168.10.254 255.255.255.0 MED : 100 It is worth noting that we can manually modify the management distance of the routing protocol in the specific protocol process on R4 , so as to affect the routing of the router itself. For example, on R4 , we will default the administrative distance of OSPF to external routes. 110 , modified to 130 , greater than the RIP management distance of 120 , so that R4 in this environment, for 192.168.1.0 will optimize the RIP route, you can avoid the problem of sub-optimal path and routing feedback .