ospf路由器LSA的验证问题????

fc841202

度量值是怎么计算出来的,请讲解.谢谢.\r\nr2#show ip route\r\nCodes: C - connected, S - static, R - RIP, M - mobile, B - BGP\r\n       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area \r\n       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2\r\n       E1 - OSPF external type 1, E2 - OSPF external type 2\r\n       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2\r\n       ia - IS-IS inter area, * - candidate default, U - per-user static route\r\n       o - ODR, P - periodic downloaded static route\r\n\r\nGateway of last resort is not set\r\n\r\nC    200.200.200.0/24 is directly connected, Serial0/1\r\n     1.0.0.0/32 is subnetted, 1 subnets\r\nO       1.1.1.1 [110/65] via 100.100.100.1, 00:15:50, Serial0/0\r\n     2.0.0.0/24 is subnetted, 1 subnets\r\nC       2.2.2.0 is directly connected, Loopback0\r\n     100.0.0.0/24 is subnetted, 1 subnets\r\nC       100.100.100.0 is directly connected, Serial0/0\r\nr2#show ip od\r\nr2#show ip os\r\nr2#show ip ospf da\r\nr2#show ip ospf database \r\n\r\n            OSPF Router with ID (2.2.2.2) (Process ID 2)\r\n\r\n                Router Link States (Area 0)\r\n\r\nLink ID         ADV Router      Age         Seq#       Checksum Link count\r\n1.1.1.1         1.1.1.1         974         0x80000003 0x004CD5 3\r\n2.2.2.2         2.2.2.2         973         0x80000002 0x00EB2E 3\r\nr2#show ip osp\r\nr2#show ip ospf da\r\nr2#show ip ospf database route\r\n\r\n            OSPF Router with ID (2.2.2.2) (Process ID 2)\r\n\r\n                Router Link States (Area 0)\r\n\r\n  LS age: 986\r\n  Options: (No TOS-capability, DC)\r\n  LS Type: Router Links\r\n  Link State ID: 1.1.1.1\r\n  Advertising Router: 1.1.1.1\r\n  LS Seq Number: 80000003\r\n  Checksum: 0x4CD5\r\n  Length: 60\r\n  Number of Links: 3\r\n\r\n    Link connected to: a Stub Network\r\n     (Link ID) Network/subnet number: 1.1.1.1\r\n     (Link Data) Network Mask: 255.255.255.255\r\n      Number of TOS metrics: 0\r\n       TOS 0 Metrics: 1\r\n\r\n    Link connected to: another Router (point-to-point)\r\n     (Link ID) Neighboring Router ID: 2.2.2.2\r\n     (Link Data) Router Interface address: 100.100.100.1\r\n      Number of TOS metrics: 0\r\n       TOS 0 Metrics: 64\r\n\r\n    Link connected to: a Stub Network\r\n     (Link ID) Network/subnet number: 100.100.100.0\r\n     (Link Data) Network Mask: 255.255.255.0\r\n      Number of TOS metrics: 0\r\n       TOS 0 Metrics: 64\r\n\r\n\r\n  LS age: 987\r\n  Options: (No TOS-capability, DC)\r\n  LS Type: Router Links\r\n  Link State ID: 2.2.2.2\r\n  Advertising Router: 2.2.2.2\r\n  LS Seq Number: 80000002\r\n  Checksum: 0xEB2E\r\n  Length: 60\r\n  Number of Links: 3\r\n\r\n    Link connected to: a Stub Network\r\n     (Link ID) Network/subnet number: 2.2.2.2\r\n     (Link Data) Network Mask: 255.255.255.255\r\n      Number of TOS metrics: 0\r\n       TOS 0 Metrics: 1\r\n\r\n    Link connected to: another Router (point-to-point)\r\n     (Link ID) Neighboring Router ID: 1.1.1.1\r\n     (Link Data) Router Interface address: 100.100.100.2\r\n      Number of TOS metrics: 0\r\n       TOS 0 Metrics: 64\r\n\r\n    Link connected to: a Stub Network\r\n     (Link ID) Network/subnet number: 100.100.100.0\r\n     (Link Data) Network Mask: 255.255.255.0\r\n      Number of TOS metrics: 0\r\n       TOS 0 Metrics: 64

ssffzz1

10^8/接口带宽=度量值\r\n\r\n度量值累加即可得知到目的网络总的代价。

fc841202

O       1.1.1.1 [110/65] via 100.100.100.1, 00:15:50, Serial0/0\r\nLink connected to: a Stub Network\r\n     (Link ID) Network/subnet number: 1.1.1.1\r\n     (Link Data) Network Mask: 255.255.255.255\r\n      Number of TOS metrics: 0\r\n       TOS 0 Metrics: 1\r\n\r\n    Link connected to: another Router (point-to-point)\r\n     (Link ID) Neighboring Router ID: 2.2.2.2\r\n     (Link Data) Router Interface address: 100.100.100.1\r\n      Number of TOS metrics: 0\r\n       TOS 0 Metrics: 64\r\n\r\n    Link connected to: a Stub Network\r\n     (Link ID) Network/subnet number: 100.100.100.0\r\n     (Link Data) Network Mask: 255.255.255.0\r\n      Number of TOS metrics: 0\r\n       TOS 0 Metrics: 64\r\n\r\n度量值65是那个64+1得出的.请告诉我为什么选择这个?

ssffzz1

哦，你也没说网络结构。\r\n但是OSPF选择那条的主要依据是度量值，另外区域内的优先于区域间的。