ccnp route objectives

ccnp route objectives

UDLD This feature uses the CDP table of the device to determine the reachability of the next hop. In R2 , the energy from each R1 and R3 learning to 100.0 the EBGP route, if arranged on maximum-paths 2 Vlans in spanning tree forwarding state and not pruned Router(config)# router ospf 1 Access-list 1 permit 1.1.1.0 In the above figure, R1 and R3 will update routes 1.1.1.0 and 11.11.11.0 to R2 . Of course, by default, R2 is definitely the preferred EIGRP. By modifying LOCAL_PREF to affect the flow properties R1(config-route-map)# match ip address prefix-list list1 Routing feedback To do another test, PC1 privately modifies the IP address: / / Configure etherchannel , ID is 1 , the mode is desirable 100 Vtp pruning is off by default ? TRUNK 201 Timer verification Route summary Neighbor maximum-prefix xx restart 2 When a network is directly connected, the interface is not "activated" and attempts to establish a neighbor relationship. BGP neighbor relationships need to be manually The interface will not send BPDUs , and will also ignore received BPDUs. 10.1.25.2 Interface configuration: spanning-tree bpdufilter enable If the routes are from EBGP neighbors, it is preferred that the oldest EBGP neighbor came routing, reducing the impact of roll Ip sla monitor responder SW1#sh int trunk Corresponding hwidb fast_if_number 4 Corresponding hwidb firstsw->if_number 4 Internet address is 10.1.12.2/24 Some routes can be assigned a specific COMMUNITY attribute, and then BGP attributes can be set based on the COMMUNITY value instead of each route . The COMMUNITY attribute works for neighbors. After setting, it needs to be sent to the neighbor ( SEND ). ? 200 ? // match AS ( 100,1 ) and ( 200,1 ) There are classes and classless route lookup mode 2 : Reponse message, send all or part of its routing information, in a Response message Network 11.11.11.0 mask 255.255.255.0 Automatic summary R2#sh ip b 100.100.100.0 201 200 The RID is the largest IP address on the router and tends to be assigned to the loopback address. It can also be set manually by the bgp router-id command. If a path contains an RR attribute, the route generator ID ( originator ) will replace the RID in the optimal path selection process. The routing between the internal LOOPBACK of the AS can be learned separately. Both R1 and R3 update the route of the 100 network segment to R2 . Without any policy, the BGP routing rule will always be compared to the RID , and finally the route of R1 is preferred . Each routing table entry must include at least the following three items: Cisco CEF is the most efficient three-layer protocol. CEF uses a hardware-based platform . It not only stores data in the system buffer, but also " prestores " the entire routing table, topology table , and all next hop addresses and MAC addresses , as long as the routing table, The entries in the topology table , regardless of whether there is a data request sent to its destination address , will be pre-read in advance , pre-set the cache . Thus ,ccnp route objectives, when there is a new data request to send , the CPU is not required to query the destination interface , destination MAC Address and other information , but read directly from the cache , so the forwarding speed is greatly improved .