ccnp route guide download

ccnp route guide download

Origin codes: i - IGP, e - EGP, ? - incomplete neighbor RC-ip the EBGP Multihop- 2 // jump between them number 2 Network 192.168.254.0 0.0.0.255 area 1 Ip address 192.168.10.254 255.255.255.0 When the router performs a classless route lookup (by default, ip classless ), it does not pay attention to the class of the destination address. It performs the longest match between the destination address and all known routes bit by bit . supplement: 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 . Policy-list feature Protocol Interface Redistribute rip subnets route-map test Ip address 192.168.100.254 255.255.255.0 Neighbor 1.1.23.2 route-map test out Provides access to physical links. O E2 1.1.1.0 [110/20] via 10.1.23.2, 00:06:40, Serial0/0 RIPv2 35 200 When thinking about the route reflector, consider the cluster as a logical whole. RR and client together form a reflection cluster, but only RR. 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. / / Kill 11.0 release all details except 11.0 Bgp inject-map RP_mingxi exist-map RP_huizong copy-attributes R1 and R3 , R2, and R5 establish an EBGP neighbor relationship. Ip dhcp snooping Redistribution between different OSPF processes R3 Exit Link-level data transmission: Receive data from the LLC sub-layer, attach the MAC address and control information, and send the data to the physical link; provide verification and other functions in this process. 10.1.13.3 In summary, for IBGP to work properly, you must implement one of the following configuration options: Bgp-policy accounting input Neighbor 3.3.3.3 update-source Loopback0 Neighbor 3.3.3.3 remote-as 345 Configuration command: In interface mode, you must configure the interfaces on both ends of the link. After the completion, you can show ip rip database to view the routing details. By default, only the MED values of BGP routes from the same neighbor AS are compared , that is, if the two routes of the same destination are from different 200 15 Match one of 123 plus any character plus one of 7 to 9 , such as 167 , 3 spaces 7, etc. Then IOS will automatically change the command to Set ip next-hop ip1 ip2 ...... Use clear port-security dynamic command to clear all port-security interface by dynamically learned secure address entry using clear port-security sticky command to clear all sticky secure address entries Understanding Port-Security or: Run RIPv2 , the default R1 update 1.0.0.0/8 is summarized to R2 , and the automatic summary is closed on R1 , then R2 learns to 1.1.1.0/24 , and since it still starts automatic summarization, the update to R3 is 1.0.0.0. /8 . This time if R2 on ip route 1.1.1.0 255.255.255.0 null0 , then R2 is routed on the table 1.1.1.0 becomes static static routing, and the R2 is no longer to R3 updated RIP 's Neighbor 5.5.5.5 ebgp-multihop 3 Neighbor 1.1.23.3 distribute-list 1 out Used in route-map , when some of the matching entry, and using the set command, the route-map used in a neighbor (e.g., out time direction),ccnp route guide download, then to update the route to a neighbor, the BGP of MED properties will Inherit the metric value of these routes in the local IGP Next Hop The idea of ​​configuration is that on R2 , you want to grab the fast0/0 port (that is, the one sent by R1 ) and go to the traffic of 30.30.30.0/24 . Access-list 11 deny 192.168.1.0 In summary, for IBGP to work properly, you must implement one of the following configuration options: Note that for sticky mac address , the aging time of the secure address is invalid. Sw1(config-if)#ip address 172.16.10.1 255.255.255.0 Sw1(config-if)#no shu Port DHCP option 82 , also known as DHCP relay agent information option ( Relay Agent Information the Option ), is the DHCP option in the packet, which numbered 82 3.3.3.3 (metric 65) from 3.3.3.3 (3.3.3.3) Summary of 192.168.0.0/16 on R2 Revoked route Set local-preference 300 For more detailed BGP state machine and neighbor relationship establishment process, please see the note document: " BGP State Machine and Neighbor Relationship Establishment Process" Neighbor 5.5.5.5 weight 100 Transparent mode VTP configuration revision number is always 0 or In R2 opened on loopback interfaces 2.2.2.0/24 , R2 both redistributed RIP into OSPF , they redistribute directly connected into OSPF Optional non-delivery, generally used between AS to affect routing. One point and one asterisk, match all, any Destination Address (Route Prefix): This is the destination network number associated with the route entry. A complete route prefix consists of: network number + prefix length The route weight generated by the local network is 32768. 0 100 0 100 i Different prefixes (network number + mask, indispensable), belonging to different routes in the routing table Process exchange MAC address allocation and reduction Ip community-list standard del permit no-export route-map test permit 10 Matches the network number and prefix length in the route prefix to enhance the accuracy of the match. Network, which is consistent with topology expectations, but the underlying cause is still due to the learning of R2 compared to IBGP routes from R3 . R2(config-router)# redistribute os 1 metric 100000 100 255 1 1500 In the federal scope, the member AS number is pushed into the AS_PATH , but not published outside the federation, and the AS_PATH of TYPE3 , 4 is used . Bridge using these 4 steps to save each port received the " best " of the BPDU a copy. When each BPDU arrives, it will check according to this 4- step decision step to see if it has a better BPDU saved on the port . If it is, it will be updated. Dhcp-snooping / / Start bgp dampening , the default is valid for all EBGP routes, you can also add route-map In CEF , there are two main types of load balancing, based on messages and based on purpose. It means for VLAN100 traffic, not to log the ARP ACL discarded packets match 10.1.13.1 Address family identifier. When the value is 2 , it indicates the IP protocol. RR self-originated route On a specific interface, if no BPDUs are received for three consecutive cycles (or max-age timeout), the STP data on the interface will age rapidly. As a result, the BPDUs are somewhat similar to the keep-alive mechanism between switches . This fast aging mechanism helps to respond quickly to topology changes. Ip route 172.16.0.0 255.255.0.0 192.168.23.3 R3 and R4 establish IBGP neighbor relationship, and R3 on the OSPF routes redistributed into BGP At this time, he himself will still forward if he receives the data packet to 3.0.0.0 , but will not forward to other rips. The case of RSTP : Interface fa1/0 ipAddress --------------- 192.168.10.1 RIPv1 RIP message format 31 R1(config-router)#distribute-list 1 out ? When a router is directly connected through a point-to-point link, only one neighbor exists on each interface. After completing the configuration, R2 show ip route 0 ? A standard ACL can only match the route prefix and cannot match the prefix length of the route. For example, if you want to fetch the 192.168.1.0/24 route and use access-list 1 permit 192.168.1.0 , the route is matched, but at the same time, 192.168.1.0/25 , /26 ... are also matched because the ACL cannot match the mask, or the prefix length. Furthermore, when using a standard ACL to fetch routes, it is recommended not to add an anti-mask, otherwise the range of matching route entries will be larger and less accurate.