2. 计算机
  3. A network administrator is troubleshooting the OSPF configuration of routers R1 and R2． The routers cannot establish an adjacenc

A network administrator is troubleshooting the OSPF configuration of routers R1 and R2． The routers cannot establish an adjacenc

admin2019-04-08  61
问题 A network administrator is troubleshooting the OSPF configuration of routers R1 and R2． The routers cannot establish an adjacency relationship on their common Ethernet link． The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2． Based on the information in the graphic, what is the cause of this problem?
选项 A、The OSPF area is not configured properly．
B、The priority on R1 should be set higher．
C、The cost on R1 should be set higher．
D、The hello and dead timers are not configured properly．
E、A backup designated router needs to be added to the network．
答案D
解析 OSPF邻居建立过程中有几个参数是需要严格匹配的：Hello time和dead time，Area id, MTU,特殊区域标识符。然后比较图中的R1和R2的内容可以看到他们的Hello time 和dead time是不同的，因此他们的邻居关系是无法建立的。
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