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CCNA Exploration _part10

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CCNA Exploration giao thức định tuyến và các khái niệm: OSPF Lab 11.6.1: Phòng thí nghiệm Cấu hình OSPF cơ bản Xin chào do trong 00:00:00 Index 1 / 1, chiều dài hàng đợi lũ lụt 0 Tiếp theo 0x0 (0) / 0x0 (0) Lần lũ quét chiều dài là 1, tối đa là 1 lũ quét | CCNA Exploration Routing Protocols and Concepts OSPF Lab 11.6.1 Basic OSPF Configuration Lab Hello due in 00 00 00 Index 1 1 flood queue length 0 Next 0x0 0 0x0 0 Last flood scan length is 1 maximum is 1 Last flood scan time is 0 msec maximum is 0 msec Neighbor Count is 2 Adjacent neighbor count is 2 Adjacent with neighbor 192.168.31.33 Designated Router Adjacent with neighbor 192.168.31.22 Backup Designated Router Suppress hello for 0 neighbor s R1 Step 3 Use the show ip ospf neighbors command in global configuration mode to view information about the other routers in the OSPF area. Notice that R3 is the DR and R2 is the BDR. R1 show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 192.168.31.22 1 FULL BDR 00 00 35 192.168.1.2 FastEthernet0 0 192.168.31.33 1 FULL DR 00 00 30 192.168.1.3 FastEthernet0 0 Task 7 Use the OSPF Priority to Determine the DR and BDR Step 1 Use the ip ospf priority interface command to change the OSPF priority of the R1 router to 255. This is the highest possible priority. R1 config interface fastEthernet0 0 R1 config-if ip ospf priority 255 R1 config-if end Step 2 Use the ip ospf priority interface command to change the OSPF priority of the R3 router to 100. R3 config interface fastEthernet0 0 R3 config-if ip ospf priority 100 R3 config-if end Step 3 Use the ip ospf priority interface command to change the OSPF priority of the R2 router to 0. A priority of 0 causes the router to be ineligible to participate in an OSPF election and become a DR or BDR. R2 config interface fastEthernet0 0 R2 config-if ip ospf priority 0 R2 config-if end Step 4 Shut down and re-enable the FastEthernet0 0 interfaces to force an OSPF election. The FastEthernet0 0 interfaces of each of the routers can be shut down and re-enabled to force an OSPF election. Shut down the FastEthernet0 0 interface on each of the three routers. Notice that as the interfaces are shut down the OSPF adjacencies are lost. All contents are Copyright 1 -iSSysiSInctr i .