ccna 200 301 syllabus design in elton

ccna 200 301 syllabus design in elton.FastEthernet0/0 unassigned YES unsetadministrativelydowndownmanual Seriall/0 172,16.7.6 YES administrativelydowndownmanualup Seriall/1 172.16.7.10 YES unsetadministrativelydownunsetadministrativelyChapter 8 OSPFdown**up*08Seriall/2 unassigned YES downunsetadministrativelydownmanualup up Seriall/3 unassigned YES down W FastEthernet2/0 unassigned YES downLoopbackO 10.10.6.1 YESFrom the above output, you can see that the S1/0 interface status of Router R2 is administratively down, because the administrator did not activate the interface with the .noshutdown command. Open the S1/0 interface of Router R2 and use the "show running-config" command to further check the subnet mask of the interface.command to check the subnet mask of the interface and whether there are other unrelated configurations under the interface, and found that they are normal.You can successfully ping through the direct interfaces of R1 and R3 on R2. The fault that R1 cannot ping through R2's direct port is ruled out here. Check the interface IP address, subnet mask, and interface status on router R3 are normal, and there is no extra configuration under the interface. You can successfully ping through the direct ports of R1 and R2 on R3.Step 6: Troubleshoot network layer routing protocolsUse the "showip protocolsw command, "showip ospfneighborw command to view the configuration of each router routing protocol, and use theshowiproute command to see if the routing table of each router is correct. The average reader may prefer to use the "'showrunning-configw command to