link id: 30.0.0.3                           /*网段中DR的接口地址*/
data : 30.0.0.1                             /*本接口的地址*/
type : TransNet (2)                         /*类型*/
metric : 50                                 /*花费*/

/*DR (6.6.6.6) 生成的LSA:*/
Net mask : 255.255.255.0
Attached 30.0.0.1 router
Attached 30.0.0.2 router
Attached 30.0.0.3 router