ccnp tshoot topics

ccnp tshoot topics

After the trigger update is enabled, the routers at both ends of the link no longer send routing updates periodically. Of course, another problem arises. If the route in the routing table expires, it will hang, so it is necessary to trigger the update. It must be configured on both interfaces of the link, so that the routing update will be marked permanent for permanent. ( 0xFFFF0000-0xFFFFFFFF ) is a reserved community value. In addition to these values, several well-known values ​​such as no-export , local-as, etc. are defined. For specific values, see RFC . EBGP non-equivalent load balancing The default keyword has a lower priority than the detail route. *>i100.0.1.0/24 Select the route with the smallest neighbor IP address ( the address of the neighbor in the neighbor configuration of BGP , that is, the update source IP of the neighbor ) Note that there must be three layers between the DHCP server and the trunk interface. Because the unicast packet is relayed, the source address is the trunk interface configured with ip helper-address . Therefore, when the DHCP server returns the packet, the destination IP address of the packet. This is the interface IP of the interface configured with ip helper-address . Management VLAN in a Layer 3 switch environment Known via "bgp 200", distance 20, metric 0 Tag 13, type external Dynamic routing protocol port number or protocol number 7 200 100 5.5.5.5 As a result, on R2 , the OSPF route 1.1.1.0 in the routing table and the 192.168.12.0 directly connected network segment that is declared into the OSPF process are all announced to RIP , and R1 can learn the two routes through RIP. ,ccnp tshoot topics, as shown in the red bold part below. Local origin Longest match principle 10 A route-map containing a set of match statements can be defined in advance as a list of commands called a policy-list. EtherChannel supports load balancing in the same port-channel link 5.5.5.5 OPEN message Network 11.11.11.0 mask 255.255.255.0 Then R2 introduced locally 1.1.1.0 of BGP routes, and inherits from OSPF learned 1.1.1.0 of Metric 2 , then R3 on If the DHCP discovery message sent by the client does not contain the client-identifier , the hardware address can be used to identify the terminal device. The configuration commands are as follows: Port-Security and Sticky MAC Address Switchport PVST+ has been improved in this respect. PerVLAN means that a VLAN corresponds to a spanning tree. In this way, the switch will calculate the spanning tree based on the VLAN . We can adjust the priority and other related parameters by using a separate VLAN spanning tree, thus affecting Spanning tree calculations ultimately achieve reasonable link bandwidth utilization. For example, in the above figure, there are two VLANs , 10 and 20 on the intranet . Let SW1 become the primary root of VLAN10 (the lowest priority of the whole network switch), SW2 becomes the secondary root of VLAN10 , and SW3 has the highest priority, so we will BLOCK off. SW3 is connected to the upper port of SW3 . In contrast, VLAN 20 is also the most specific adjustment. In this way, the user of VLAN 10 will go out to the left link, the user of VLAN 20 will go to the right, and the link is properly used to achieve load balancing.