ccnp tshoot exam questions pdf

ccnp tshoot exam questions pdf

This can indeed avoid the suboptimal path problem, but it leaves a hidden danger: In this way, the entire network is interconnected. Note that when redistributing routes to OSPF , redistribute rip subnets , this subnets Neighbor xxx password xxx Access-list 1 permit 10.1.1.0 Neighbor 1.1.1.1 route-reflector-client Fa0/22 1-4094 Set local-preference 300 After a few seconds, D receive this the BPDU , Block out port P1 If R1 turns on auto-summary and network 1.0.0.0 , R2 can learn summary route 1.0.0.0/8 ------------------ 00:B0:64:04:09:99 (64512) 1 i In half-duplex mode, the CSMA/CD access method is adopted . Switchport port-security mac-address sticky 00b0.1111.2222 When UDLD detects a unidirectional link failure, it administratively shuts down the interface and prompts the user. Unidirectional links can cause various problems, including spanning-tree topology loops Origin IGP, metric 0, localpref 100, valid, external,ccnp tshoot exam questions pdf, multipath , best PS : It should be noted that there will be class and classless route lookup methods, which are distinguished from classful and classless routing protocols. Look at the above picture, the gray space 172.16.0.0/16 , this network number, we call the main class network number , the so-called main class network number, meaning the network number, according to the IP address category to which it belongs , corresponding to The network number obtained after the default subnet mask length. Such as 172.16.0.0 this is a 1,20,30 FIG fancy, initial condition, C interface is elected non-designated port is Block , B sent from the designated port BPDU to C . Let us first consider the case of 802.1D . When the link between Root and B fails, since the interface connected to B on C is BLOCK , it does not send BPDU to B. Therefore, B considers itself to be Root at this moment , so it goes to C. Send yourself a BPDU for Root . Because at this time , the interface of C also stores the BPDU sent by B to the previous B , and this BPDU is compared with the BPDU sent by B to B.It is better, so C ignores these suboptimal BPDUs directly . Until the Max-Age timeout, the BPDUs sent by the previous B stored on the interface of C will be aged. At this time, the interface enters LST and starts to send BPDUs , indicating that the root is Root. . At this point, B accepts the facts and sets the interface that connects itself to C as the root port.