ccnp switch chapter 6

ccnp switch chapter 6

100 4 Initially, R3 can learn three loopback routes from R1 and 192.168.12.0/24 routes. Now we don't want R3 to learn the route to 192.168.3.0/24 , then we can configure it on R2 as follows: Also pay attention to the sending conditions of ICMP redirects here . At the same time, note that this default route on R3 , if configured to associate with the outbound interface, can not observe the phenomenon of redirection, as for the reason, you know, proxy ARP . !! vlan10 activates DHCP snooping Ip route 0.0.0.0 0.0.0.0 serial s0/2 The secure address formed by the dynamically learned MAC is valid. If the MAC is in a failed state within 50 minutes (for example,ccnp switch chapter 6, the host is offline), the secure address is cleared after the aging time expires. Protocol overview 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. RIP redistribute default route Switchport access vlan 10 interface fast0/24 1 network entries using 117 bytes of memory 1 path entries using 52 bytes of memory Origin IGP, metric 0, localpref 100, valid, external, atomic-aggregate , best Network 5.5.5.5 0.0.0.0 area 0 DHCP Snooping Binding Database Interface vlan 100 R2 (2) By default, the routing entry of 1.0.0.0 updated by R1 is ignored. After configuring ip rip receive v 1 on S0, you can learn. 2 : RIP-2 . Reissued by an early agreement like EGP Ip dhcp snooping vlan 10 BEGIN R1(config-router)#distribute-list 1 out ? Configure the maximum number of secure addresses allowed for Port-Security . 2 : Reponse message, send all or part of its routing information, in a Response message DAI configuration policy 200 You can not route the network , but the origin of the route, configure a summary static, and then network the summary route, this method is not recommended. [Experiment 3 ] Cancel detailed route suppression for a specific neighbor Ip prefix-list 1 permit 1.1.1.0/24 route-map test Flex links and Port-Security are not compatible with each other This is the ICMP redirect message sent by R1 to R3 . Note that the Gateway address field in the header is filled with the next hop IP that is closer to the destination than the destination . Dhcp snooping binding database . as follows: Neighbor 10.1.23.2 route-map setCommu in The maximum number of secure addresses, the upper limit allowed by different software platforms is different, but the default is 1 . * i100.0.1.0/24 *>i100.0.2.0/24 .* Enables debugging on the DHCP client Y Below is an example: In R2 opened on loopback interfaces 2.2.2.0/24 , R2 both redistributed RIP into OSPF , they redistribute directly connected into OSPF For the same BGP connection, the passwords must be the same; different neighbors can set different passwords. After the authentication is configured, all data segments transmitted through the TCP connection between the peers are verified. The MAC sublayer is physically layer-dependent, that is, different physical layers have different MAC sublayers for access. In Ethernet, there are two main types of MAC : Default seed metric The switch receives a DHCP packet, the discovery packet of option82 information precisely, the switch from locally originated option82 after information is removed, the DHCP packets forwarded to the DHCP Client . Experimental example: Calling in the distribution list 100 i After this time has elapsed, the route entry will become 16 hops, marking the unreachable route possibly down . Gateway of last resort is not set Destination address: The address of the host or network. port-security does not support etherchannel the port-channel interfaces 100 i Conduct a three-layer forwarding decision. The CEF table maintains core information extracted from the routing table, which is used to perform forwarding decisions on received messages, including IP prefixes, recursive next hop addresses, and outbound interfaces. An important feature of the CEF table is its ability to make immediate decisions about recursive prefixes. Route tag 13 2) Activate TC while timer , and then send the TC- set BPDU out from all non-edge designated ports and root ports . In this way, topology change information quickly floods the network. Below we summarize some of the key points of the router about route lookup: 200 Elect a root bridge in a switched network V Through MED affect route choice 18 The adjacency list in the CEF component is used for MAC or Layer 2 rewrite information. R2 20 In doing polymerization route, using as-set produced after AS-Path list {} in the AS length number only count a AS length number within the Union AS-Path list () in the AS number length Calculate basis Prefix-list Set community none router bgp 3 1.0.0.0/8 route Associate the static route of the next hop Run RIP between R1 , R2 , and R3 , and R1 and R2 are injected into their respective loopback ports. Forwarding delay Distribute-list 1 out rip Community Router bgp 11 Match ip address 1 Soft reset You can not route the network , but the origin of the route, configure a summary static, and then network the summary route, this method is not recommended. R2# sh ip ro 100.100.100.0 Data forwarding mode Corresponding hwidb fast_if_number 4 Corresponding hwidb firstsw->if_number 4 BGP policy accounting on input is enabled. Origin IGP, metric 0, localpref 100, valid, internal Originator: 1.1.1.1, Cluster list: 4.4.4.4, 3.3.3.3 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 . internal If you only want to detect the reachability of some next-hop devices, you can configure different route-map serial numbers to selectively use this feature (in the same route-map ). 1,10,20,30 Use ip community-list to match the community value SW1 (config-if) # glbp 1 priority 120 Idle DHCP static address binding The mapped ethernet vlan will be blocked Origin IGP, metric 0, localpref 100, valid, external, multipath , best When R5 is updated to EBGP neighbor R2 BGP route 5.5.5.0 , NEXT_HOP =192.168.25.5 , this attribute will always be followed by this BGP route in AS234 . At this time, for R4 and R3 , I don't know how to go to 192.168. 25.5 , so the 5.5.5.0 route cannot be properly loaded into the routing table. One solution is to R2 in the IGP injection route 25.0 This external routes, the other is R2 its IBGP neighbors using the Next-Hop-Self , modify this prefix NEXT_HOP properties.