ccnp route study notes

ccnp route study notes

Redistributing Routing Protocols 40 Route-map 55 (1) Declare the loop port 2.2.2.2224 The current status of the Port Status : Secure-up !! interface is up . Note inconsistent with err-diasble difference is, ERR-disable will disable off the entire interface, and inconsistentport is for a particular VLAN 's. Ip policy route-map x Remarks Match, and the result is that there is no match, it is directly discarded, regardless of whether there is a valid entry in the DHCP Snooping database . Activate the portfast feature for a specific interface 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. Database , this database is DHCP Snooping listens for DHCP information recorded after the interaction, inside contains the client's IP , the MAC , belongs to VLAN -related information, etc., and this information, just as ARP 's legality verification. If you try to activate port-security on an 802.1X interface, you will get an error and the port-security feature will not open. Switch# show vtp password Configured MAC Addresses : 0 !! Manually configured secure MAC address, not here * i100.0.1.0/24 But there is a loop in the second floor environment. Flex links and Port-Security are not compatible with each other R1 and R3 , R2, and R5 establish an EBGP neighbor relationship. The 10.1.10.0/25 subnet cannot be updated because the subnet and the update source interface belong to the same main class network, but the masks are different. Next Hop Again rule 11 , it seems to take effect, but this time the R3 of BGP routerID than reform R4 large, found R5 Still preferably R4 , because "If a path contains RR properties, producer ID to select the optimal path during Instead of RID ” Bridge ID ( 8 bytes) = Bridge Priority (2 bytes ) + Bridge MAC (6 bytes ) Offset-list 1 out 1 serial 0/0 As a result, R3 updates the BGP route to R4 , and next-hop will be replaced with R3 's loopback interface IP . Configuration Revision 15 NEXT_HOP on NMBA network Internal BGP Difficult case 60 0 100 0 100 i 0 100 0 100 i Y BGP , but the BGP routes ( BGP packets) between the BEs can be forwarded through the CD . For the CD , these BGP messages are regarded as normal IP packets and are directly forwarded and not viewed. Enables debugging on the DHCP client When the RR receives a route from an EBGP neighbor and passes it to the client or non- client , CLUSTER_LIST is not created . The update is sent. At this time, both parties have their own routes, but 1.1.1.1 cannot ping with 2.2.2.2 . IP Routing Table 5 At 1 o'clock, it can be considered that this address represents a broadcast address or a multicast address in the Ethernet, or represents a broadcast address or a function address in TR and FDDI . The next bit is the G/L bit (also known as U/L, where U is global). When this bit is set to 0 , it represents a global management address. 100 i Inject-map to use the route-map in 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. Switchport access vlan 100 interface fast0/24 BGP Deaggregation Ip address 192.168.100.1 255.255.255.0 In R6 connecting the R4 interface to capture found update package 11.11.11.0 prefix attribute carried AS_PATH contains 2 th content: Public Must be a zero field. 32 bits CISCO data forwarding mode 13 This command can change the properties of the aggregation route (note, only for the summary route, not for the details). IBGP is synchronized with IGP End deny any Incomplete ? Learned from other sources (confirm that the source of the route is incomplete), the re-routed origin is the tag Knowledge review OSPF re-advertises routes to IBGP Hexadecimal notation, for example, 01b7.0813.8811.66, where 01 represents the Ethernet media type. Redirection enabled Example 3 of ip community-list (strictly matching community ): Preferred routes sent by EBGP neighbors (relative to IBGP neighbors), preferred federation EBGP in federated EBGP and IBGP Note that the data exchange process is different for different products. The above process is the result of testing on the CISCO device (server). Or the above example, if we R1 on,ccnp route study notes, of ping 1.1.1.2 REPEAT size. 1 1501 , at this time, R1 due to the generation of the IP packet is larger than 1 Neighbor routing source neighbors allowas-in a few of my as numbers 10.1.13.1 The 10.1.10.0/25 subnet cannot be updated because the subnet and the update source interface belong to the same main class network, but the masks are different. The default is 180s , which can also be called expiration timer time limit timer or timeout timer. Re-routing release ( Redistributing Routing Protocols ) //Get out a summary route instead of the default route The weight of the BGP route generated by the local summary is also 32768. In the BGP table, only one route is preferred, which should be R3 (because R3 's RouterID3.3.3.3 is less than R5 's 5.5.5.5 ) All clients in the route reflection cluster should establish IBGP connections with and only with all RRs in the cluster. 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. When a router receives an update from the neighbor router indicating that the previously reachable network is now unreachable, or has a route with a larger hop count, the router marks the route as unreachable and starts a suppression timer if If the router receives a newer update of the route before the timer expires, or has a better metric than the previous record, the router identifies that the route is reachable and deletes the timer.