ccnp route ppt

ccnp route ppt

Metric There is indeed no atomic_aggregate . Observe for a while, what will happen to R2 ? Why is there such a failure? A sends a data frame to B requesting to establish a reliable connection-oriented connection. The command distribute-list out works only on the routes being redistributed by the Autonomous System Boundary Routers (ASBRs) into OSPF. It can be applied to external type 2 and external type 1 routes, but not to intra-area and interarea routes. At the same time, the penalty value is reduced at a certain rate. At the end of each half-life, the penalty value becomes half of the original value (if the route is no longer flipped) Ip prefix-list FILTER deny 1.1.1.0/24 ip prefix-list FILTER permit 802.1q Router bgp 345 Ip arp inspection limit {rate pps [burst interval seconds ] | none} The lower the value is set, the higher the protection level for the CPU . This value takes effect before and after the penalty action occurs. Of course, this value cannot be set too low. At least the legal traffic must be processed. Generally less than 1000 is almost the same. !! This is the direct link between R1-R3 Modify the TAG of the summary LSA of the ASBR notification A single RR may have a single point of failure problem, so from the perspective of redundancy, there can be multiple RRs in a cluster , Client and each Address For example, change the COMM value of a route of AS12 to 10000 , and the RFC uses hexadecimal to indicate the COMMUNITY attribute, while CISCO Weight After receiving the packet check, R2 finds that this is the IP of the same subnet as the interface that accepts the update package , so accept this update. Therefore, this test, although the interface masks on both sides are different, but can accept each other's updates, and can also ping between 1.1.1.1 and 2.2.2.2 . Ip route 1.1.1.0 255.255.255.0 serial 0/0 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. VLAN works on the second layer of the OSI reference model Len : Number of bytes of Sub-option Value , excluding two bytes of SubOpt and Len fields Set the outgoing interface of the data Then, in order for R3 to dynamically learn the routing of production and office servers, it is now necessary to redistribute these two static routes into OSPF . Of course, there are tricks when re-publishing. Community number in aa:nn format Add to the existing community Origin codes: i - IGP, e - EGP, ? - incomplete Y 100 However, we found that R4 did not pass these two routes to R5 , which is because of the effect of IBGP 's horizontal splitting principle. According to the IBGP split horizon principle, a BGP router, if it learns BGP routes from its IBGP neighbors , will not be able to pass these BGP routes to other IBGP neighbors. The reason for setting this rule is that BGP anti-ring needs to resort to ? Note that for sticky mac address , the aging time of the secure address is invalid. 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,ccnp route ppt, B accepts the facts and sets the interface that connects itself to C as the root port.