ccnp route questions and answers

ccnp route questions and answers

Router bgp 100 When OSPF to IBGP when routes are heavy, because the OSPF of AD than IBGP of AD should be small, so there is no problem of sub-optimal routing path or loop: If the local end has this feature enabled, the next-hop device does not support CDP , then switch to the next next-hop . If there is no next-hop , skip the PBR. : 000a.8a07.8280 EIGRP is run between R1 and R2 . At the same time, R1 and R2 announce their respective LOOPBACK interfaces in the EIGRP process. Message interaction process ^a.$ 5.5.5.5 Topology change process AS_CONFED_SEQUENCE and AS_CONFED_SET Open Shortest Path First (OSPF) Routing Information Protocol (RIP) Route map reference Virtual-PPP Virtual PPP interface Experiment continued, after the above configuration, R4 has passed BGP learned from the R1 two of BGP routes. Switchport mode private-vlan host Dhcp-bindings permit —Logs DHCP-binding permitted packets. In the establish state, the status prompt is not displayed, and a number indicating PfxRcd is displayed , that is, the prefix entry received from the neighbor. Metric Before the DAI is deployed , if the ARP spoofing behavior occurs on the intranet , for example, the PC sends an invalid ARP packet, the switch cannot detect and defend the defensive action. The switch receives a DHCP packet, the discovery packet of option82 information precisely, the switch from locally originated option82 after information is removed, the DHCP packets forwarded to the DHCP Client . Number_of_messages will also become 0 . [Case] ​​routing flipping Metric BackboneFast Switch(config-if)# switchport mode access FastEthernet FastEthernet IEEE 802.3 When the GW loses the route to 10.1.12.2 and the connection to ISP2 is also lost, then the default route is taken. On: channel member without negotiation ( no protocol ) For example, if a route is flipped, the penalty value is 1000. In this case, there is a half-life ( 15 minutes). After 15 minutes (if the route is not flipped again), the penalty value is reduced to half 500 , and after 15 minutes, it becomes 250. At this time, if the route has another jitter, the penalty value is increased by 1000 and becomes 1250. Before this, the route is used normally. If they shake once, it becomes 2250 , exceeding the threshold 2000 , this route will be suppressed,ccnp route questions and answers, nor not updated. After 15 minutes, if it is no longer flipped, it is reduced to half 1125 (but still suppressed), so it goes through several half-lives until it is reduced to 750 (re-use limit) and the route is enabled again.