ccna 200 301 syllabus uaeh academico udabol

ccna 200 301 syllabus uaeh academico udabol.Holdtme indicates the hold time, for example, the hold time of C6509 is 149 seconds, that is, it will disappear after 149 seconds, in fact, this neighbor device will not disappear, because the default time interval for sending CDP is 60 seconds, 149 seconds means that the last CDP packet has been received for 180-149=31 seconds, and the next CDP packet will be received after 29 seconds. Why the hold time of SW1 is 33 seconds, because the transmit interval of SW1 is set to 10 seconds and the hold time is set to 40 seconds, under normal circumstances, the hold time of SW1 will not be less than 30 seconds.C-period capability indicates the connected device, "R" for router, "RS" for switch, and "RS" for routing switch.Platfbnn indicates the specific model of the device, such as 3640, WS-C6509< 7206VXR, etc.Port ID indicates the connection interface of the remote deviceFrom the above output, the reader may wonder how the FaO/O interface of router R1 can be connected to the Gi9/36 interface of C6509 (the Gi9/36 interface of the Cisco 6509 switch that the author's laptop is connected to in the unit), the Fa2/0 interface of R2, and the FaO/O interface of R2 at the same time. The reason is that Fa0/0 of R1, Fa2/0 of R2, Fa0/0 of R2, and Gi9/36 of C6509 are all connected to SW4, which in this case is a switch, but not a Cisco switch (if it were really a Cisco switch, it would show up as an "S" in the neighbor table), and It is not a Cisco hub (if it were a Cisco hub, it would be shown as "r" in the neighbor table), and SW4 is equivalent to a transparent device for CDP protocol purposes. In fact, the CDP protocol works perfectly fine when I cascade a switch or hub of another manufacturer in the middle of the Cisco device, which means that the CDP protocol can transparently traverse other companies' switches or hubs. It can be concluded that stringing a non-Cisco switch or hub in the middle of a Cisco device does not affect the use of the CDP protocol.Based on the neighbor information displayed by CDP on router R1 above, you can draw the topology shown in Figure 4-5-1, which is consistent with the CCNA rack topology and has the additional finding that the real computer was found to be connected to the Gi9/36 interface of the Cisco 6509.Use the "showcdpneighborsdetailw command to display the details of the neighboring devices connected to this device. the following is part of the output of router R1 executing this command. which displays more information than the "showcdpneighbors" command. as explained in the italicized section.Rl#show cdp nei detailDevice ID: NJUT-6509 Figure 4-5-1 CDP Discovery TopologyEntryaddress(es):