ccnp route bgp questions

ccnp route bgp questions

Tag information set local tag: 100 The parameters and capability features are negotiated successfully. You start to send the Keepalive package and wait for the other party's Router(config)#ip dhcp excluded-address 172.16.1.100 172.16.1.103 If the aggregate-address does not contain any keywords, the details are also passed, and the summary route is also passed. Number of messages waiting to be sent to the neighbor in the outQ queue Match ip address prefix-list 1 route-map RP2 permit 10 switchport trunk encapsulation dot1q switchport mode trunk Last update from 192.168.34.3 on Serial0/1, 00:09:32 ago Routing Descriptor Blocks: Experimental results: 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 : If an external route carrying a tag is advertised on R1 and OSPF is redeployed to EIGRP on R2 , then the route is advertised. Origin IGP, metric 0, localpref 100, valid, internal, best Originator: 1.1.1.1, Cluster list: 2.2.2.2 Match ip address 1 router bgp 100 Protocol mechanism Route-map cisco permit 20 match ip address 2 set metric 20 3.3.3.3 Describe Set metric 1111 CISCO Note: The DHCP option-82 feature is supported only when DHCP snooping is globally enabled and on the VLANs to which subscriber devices using this feature are assigned. 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. !! wherein 2.2.2.2 is R2 of Router-ID , attention since 100.1.1.0 in R3 of OSPF Preferred routes sent by EBGP neighbors (relative to IBGP neighbors), preferred federation EBGP in federated EBGP and IBGP 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 . To increase the reliability and redundancy of the network, we let R1 and R2 are 100.0.1.0 and 100.0.2.0 injected into BGP , here is the simulation of a redundant environment, that we can through R1 , also by R2 Go to 100.0. 1.0 and 2.0 networks. Aggregate-address 192.168.0.0 255.255.0.0 attribute-map test // Associate route-map test works on aggregated routes Baby giant frame is larger than the standard MTU 1500 bytes, but less than 2000 bytes //The details are not released. BGP decision Vlans allowed and active in management domain Define matching criteria When an RSTP switch detects a topology change it will: All VLANs except the following no VLANs Next hop 10.1.12.2, FastEthernet0/0 valid adjacency Routing Information Protocol Access-list 1 permit 192.168.1.0 0.0.0.255 Often used with the portfast feature on the interface for connecting to the host Ip detects whether the IP address in the ARP body is invalid or unexpected, such as 0.0.0.0 , 255.255.255.255 , and multicast IP address, which are considered invalid IP . SenderIP verifies whether the message is an ARP request or response . And targetIP only if the message is the ARP response will be verified when [Start fast exchange] Route-map test permit 20 match ip address 2 It can be seen that since we configured the summary, the as-set keyword was used to make the summary route inherit the detailed partial path attribute. Therefore,ccnp route bgp questions, the generated summary route still retains the aggregate attribute, but there is no atomic-agg attribute. Obviously this attribute It is no longer necessary in the case of the as-set keyword. 100 i Hexadecimal notation, for example, 01b7.0813.8811.66, where 01 represents the Ethernet media type. Next Hop Then between R3 and R4 is the federal IBGP relationship, and between R4 and R5 is the federal EBGP relationship. Matching as long as the contents of a , b , c , d appear A VLAN divided into several separate VLAN , the VLAN use the same IP network segment. 5.5.5.5 32 bits Under normal circumstances, Rl is possible to ping through 3.3.3.3 , but if R2 f0 / 0 port agent arp turned off, then it ping nowhere outlet associated with the use of static routing, the router will route to the destination address that is the local chain Road, so send arp request for mac of 3.3.3.3 , and VLAN isolated from each other, the broadcast can not cross VLAN communication, and therefore a different VLAN devices unable to reach between the general, different VLAN need to communicate with each other between the layer 3 device BGP neighbor : When two routers establish a TCP- based BGP connection with each other , they are called neighbors or peers. When the neighbors just establish a connection, they exchange all the candidate BGP routes, but after the initial route exchange, the incremental route update is usually sent only when the network information changes, and is not periodically updated. We know that the AD value of a static route is 1. The above configuration method actually changes the AD value of the static route to 10 . In this way, we have two default routes, one for the telecom exit, the AD value is the default 1 ; the other points to the education network exit, and the AD value is 10 . Then after Note the changes here: When R2 passes the route of 30.0 to R1 , the seconday AS number is no longer inserted . Router bgp 345 R1R2 establishes an IBGP neighbor relationship and maintains two BGP connections. The local interface is used to establish a neighbor relationship with the peer directly connected interface. One of the ideal solutions is to transform the network topology: The default violation is shutdown . If it is protect , then the penalty will be gentle, for illegal data frames (such as the source of the data frame) Optional delivery At this time we look at the state of the trunk on SW1 : Ip prefix-list ABC seq 5 permit 0.0.0.0/0 le 32 After these subnet routes are passed to AS200 , R4 and R5 do route summarization, and the summary routes are passed to AS100 . At this time, if R1 wants to go to the 172.16.1.0 and 2.0 subnets, it may be to go to one side, either to R2 or R3 . This is of course not the optimal implementation. We hope to see R1 go to 1.0 subnet and go to R2. , go 2.0 subnets go R3 , then the idea is to achieve in R2 and R3 deployment BGP deaggregation , the R2 to AS100 injected Criteria breakdown 172.16.1.0/24 , R3 injection 172.16.2.