ccnp route global knowledge

ccnp route global knowledge

IP Routing Overview The configuration of R4 is as follows: Switch(config-if)# spanning-tree [ vlan vlan-id ] cost cost description The greater the weight , the more priority Router ospf 100 Then between R3 and R4 is the federal IBGP relationship, and between R4 and R5 is the federal EBGP relationship. Other solutions, we will continue to introduce in the following experiments Canonical Format Indicator , which is 1 bit long, indicates whether the MAC address is a classic format. . Bgp default local-preference 500 // Modify the default lp value of the route originating locally Defaut-network takes precedence and becomes the default gateway gateway of last resort . However, if the network specified by ip defaut-network is learned from a dynamic routing protocol, ip route 0/0 takes precedence. The election of the root bridge will not be said. Next, look at the two interfaces of RP and SW2, and both will receive the BPDU , and the BPDU received by the interface connected to the root will be received . Other configuration ? Add redundant routing 9 O IA C 14 200 Ip dhcp snooping vlan 10 Interface fast0/1 Holddown timer expired Note: If it is an EIGRP environment, you need to implement unicast update, then the route update interface can not be PASSIVE (this is different from RIP ), directly use the neighbor command to specify the neighbor. If the interface is PASSIVE , even if the neighbor is manually specified , the EIGRP neighbor relationship cannot be established normally . 10.1.13.1 Bgp confederation identifier 345 neighbor 4.4.4.4 remote-as 64512 neighbor 4.4.4.4 update-source Loopback0 After receiving the Gratuitous ARP message, the peer knows that the user of the IP address already exists on the intranet, and then an alarm is generated. Network VTP Operating Mode : Server Maximum VLANs supported locally 1005 Establish BGP neighbors The default bridge priority of the switch is increased to a higher value than the default ( 32768->49152 ) so that the switch does not become Root. Ip default-network 192.168.1.0 BGP Policy Accounting Route Dampening Invalid timer protocol The network already exists in the routing table. An entry stored in the log buffer can represent multiple packets. For example, the switch receives the same ARP from the same interface and the same VLAN. Router bgp 123 IP Ip policy route-map PBR Aggregate-address 192.168.0.0 255.255.0.0 as-set advertise-map adv When an RSTP switch receives a BPDU with the TC bit set , it will: Obviously this method is too poorly scalable. Path Y In the above figure, there is a Layer 2 link between the customer and the carrier network. If the client's device is elected as the root bridge for some reason, it is troublesome. Therefore, the rootguard feature can be used to connect the client to the interface of the carrier. Deploy on. Then when these interfaces receive better from the customer Route-map overview Use the dynamically learned MAC address to form a secure address entry. Enabled by default, if an interface DOWN up, BGP answer immediately suspended. Neighbor maximum-prefix 300 90% warning-only 100 ? Network Next Hop Metric LocPrf Weight Path If the local BGP advertiser becomes the next hop address, the next hop field in the local BGP RIB is 0.0.0.0. About Ethernet RouterA passes the route 100.100.100.0/24 to C , and the NEXT_HOP remains unchanged. Is 2 , 3 with AS the first comparison, 2 is MED small it is preferable; 2 with a further comparison, since the opening of the always-compare-med s> 172.16.2.0/24 If R1 starts auto-summary and introduces 1.1.1.0/24 in the way of re-distribution direct connection , the subnet will be automatically summarized to R2. Match community 11 exact-match // strict match 300, ( aggregated by 300 3.3.3.3 ) The secure address entry can be configured by using the MAC ( SecureDynamic ) dynamically learned by the port , or by manually configuring the interface ( SecureConfigured ) and the sticy MAC address ( SecureSticky ). The case of RSTP : // in R3 is only 1.1.1.0 route, that distribute-list 1 out here this command, all externally injected into the 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 PC2 is a new host access, arranged 192.168.0.1 address, the address after the completion of the configuration, PC2 transmits to the network a Gratuitous ARP , to prevent someone within the network using the same IP address, the Gratuitous ARP is senderIP and target IP All are themselves, senderMAC is its own MAC . 100 i Neighbor 10.1.35.5 unsuppress-map unsupp Community The default is 32 Tiao At this time we look at the state of the trunk on SW1 : Metric Path The range of TAG values ​​in the external LSA Configure no switchport ( routed port ) Layer 3 interface (for forwarding delay), this TC will last for 35s ( 20+15 ) In the above figure, if both ends of the PC belong to vlan10d , if the fa0/23 port of SW1 will vlan10remove off, then the PC will definitely not be able to communicate. Route-map WT1 permit 10 match ip address prefix-list 1 set weight 200 Switching, and store the information in the cache, all subsequent data packets , you can not interrupt the system processor to perform queries and other operations , directly from Data ( DATA ) ? Switch(config)# mls rate-limit layer2 port-security rate_in_pps [burst_size] The port enters the forwarding state, and the bridge already has the designated port. As mentioned above, a route is allowed to carry multiple community values ​​to form a community list. If you want to delete one or several community values, for example, Route summary technology background In an Ethernet environment,ccnp route global knowledge, nodes communicate with each other and need to know each other's MAC address. Local origin Marker : for detecting BGP loss of synchronization between peers, the message authentication, and in the case of supporting an authentication function if the message type is open or open message does not contain authentication message flag field is set to all 1 , PS : In Ethernet, due to the conflict, two hosts on the shared medium send frames at the same time , which will cause conflicts. According to a specific algorithm, the minimum length of a frame in Ethernet is 64 bytes. Configuration Example Network 10.1.25.0 0.0.0.255 area 0 In the BGP process: neighbor xxx default-originate to pass the default route to a specific neighbor. This configuration does not require a default route in the routing table. A bit like OSPF 's default-originate always Hardware-address hardware-address type Distance vector routing protocol 8.1 Overview 91 Configuration view and verification Port-Security and Sticky MAC Address 10.1.13.1 Router bgp 100 In the outbound direction, the distribution list can only work on the ASBR that performs the route redistribution action , and can only work on externally imported routes. Because OSPF performs re-release, these external routes are actually imported in the form of routes. Therefore, the distribution list can work normally in this case, but if it is not a local originating external route or an internal OSPF route, the out direction The distribution list is at a loss.