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阿里云智能接入网关OSPF状态

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当业务不通时，如果是动态路由接入，可以通过交换机，查看设备和交换机的连通性。

操作步骤

  1. 执行如下命令，登录交换机控制台。

    telnet 交换机IP

  2. 执行如下命令，查看链路邻居状态。

    show ip ospf neighbor

    系统显示类似如下，查看State值：

    OSPF process 1, 8 Neighbors, 8 is Full:
Neighbor ID     Pri   State                BFD State  Dead Time   Address         Interface
10.10.10.10       0   Full/ -              -          00:00:10    192.168.10.5    GigabitEthernet 0/13
10.10.10.10       0   Full/ -              -          00:00:10    192.168.10.21   GigabitEthernet 0/46
  3. 执行如下命令，查看OSPF配置信息。 
    configure terminal
router ospf
show this

    系统显示类似如下，查看area和network的IP： 

    Building configuration...
 !
 router-id 1.1.1.1
 area 1 nssa translator always default-information-originate no-summary
 area 2 nssa translator always default-information-originate no-summary
 area 3 nssa translator always default-information-originate no-summary
 area 17 nssa translator always default-information-originate no-summary
 area 18 nssa translator always default-information-originate no-summary
 area 81 nssa translator always default-information-originate no-summary
 area 90 nssa translator always default-information-originate no-summary
 area 91 nssa translator always default-information-originate no-summary
 network 192.168.10.0 0.0.0.3 area 1
 network 192.168.10.4 0.0.0.3 area 1
 network 192.168.10.20 0.0.0.3 area 1
 network 192.168.20.0 0.0.0.3 area 2
 network 192.168.20.4 0.0.0.3 area 2
 network 192.168.30.0 0.0.0.3 area 0
 network 192.168.67.0 0.0.0.3 area 81
 network 192.168.67.4 0.0.0.3 area 81
 network 192.168.68.4 0.0.0.3 area 81
 network 192.168.68.16 0.0.0.3 area 81
 network 192.168.90.0 0.0.0.3 area 90
 network 192.168.90.4 0.0.0.3 area 90
 network 192.168.91.0 0.0.0.3 area 91
 network 192.168.91.4 0.0.0.3 area 91
 network 192.169.17.0 0.0.0.3 area 17
 network 192.169.17.4 0.0.0.3 area 17
 network 192.169.18.0 0.0.0.3 area 18
 network 192.169.18.4 0.0.0.3 area 18
 !
end
  4. 执行如下命令，查看连接设备的接口状态。

    show ip interface brief

    • up：表示接口正常。
    • administratively down ：表示接口上配置了shutdown，执行no shutdown命令，使能shutdown。
    • down：一般表示网线没有接好，检查网线连接。

    系统显示类似如下：

    Interface                        IP-Address(Pri)      IP-Address(Sec)      Status                 Protocol
GigabitEthernet 0/2              no address           no address           down                   down
GigabitEthernet 0/7              192.168.2.7/24       no address           up                     up
GigabitEthernet 0/11             9.9.9.1/24           no address           down                   down
GigabitEthernet 0/12             192.168.11.2/24      no address           up                     up
GigabitEthernet 0/13             192.168.10.6/30      no address           up                     up
GigabitEthernet 0/15             192.168.40.2/24      no address           down                   down
GigabitEthernet 0/20             192.168.30.1/30      no address           up                     up
GigabitEthernet 0/22             192.168.20.2/30      192.169.81.2/30      up                     up
                                                      192.168.12.2/24
GigabitEthernet 0/23             192.168.20.6/30      192.169.81.6/30      up                     up
GigabitEthernet 0/27             192.169.80.2/30      no address           up                     up
GigabitEthernet 0/28             192.169.80.6/30      no address           up                     up
GigabitEthernet 0/29             192.169.17.2/30      192.168.170.2/30     up                     up
                                                      192.169.170.2/30
GigabitEthernet 0/30             192.169.17.6/30      no address           up                     up
GigabitEthernet 0/33             192.168.67.6/30      192.168.68.6/30      down                   down
GigabitEthernet 0/35             192.169.18.2/30      no address           up                     up
GigabitEthernet 0/36             192.169.18.6/30      no address           up                     up
GigabitEthernet 0/37             192.168.90.2/30      192.169.90.2/30      down                   down
                                                      192.168.90.29/30
GigabitEthernet 0/38             192.168.90.6/30      192.169.90.6/30      down                   down
GigabitEthernet 0/39             192.168.91.2/30      192.169.91.2/30      administratively down  down
                                                      192.168.91.29/30
GigabitEthernet 0/40             192.168.91.6/30      192.169.91.6/30      up                     up
GigabitEthernet 0/43             192.168.254.2/24     no address           up                     up
GigabitEthernet 0/45             192.168.67.18/30     no address           down                   down
GigabitEthernet 0/46             192.168.10.22/30     no address           up                     up
GigabitEthernet 0/48             192.168.10.106/30    no address           down                   down
Loopback 0                       no address           no address           up                     down
VLAN 1                           no address           no address           up                     down
VLAN 4                           192.168.41.1/24      no address           up                     down
VLAN 19                          192.168.19.2/30      no address           up                     down
VLAN 47                          192.168.140.2/24     no address           up                     down
VLAN 148                         172.16.18.1/24       no address           up                     up
  5. 执行如下命令，查看接口下配置的OSPF协商时间和认证等是否匹配。 
    interface GigabitEthernet 0/39
show this

    查看ospf authentication 和 ospf message-digest-key对应的认证的参数是否和设备上配置的一致，如果不一致表示设备没有认证，无法建立邻居。

    系统显示类似如下：

    Building configuration...
 !
 poe enable
 no switchport
 ip ospf network point-to-point
 ip ospf authentication message-digest
 ip ospf message-digest-key 23 md5 888
 ip ospf hello-interval 3
 ip ospf dead-interval 10
 ip ospf priority 0
 no ip proxy-arp
 ip address 192.168.91.2 255.255.255.252
 ip address 192.169.91.2 255.255.255.252 secondary
 ip address 192.168.91.29 255.255.255.252 secondary
 !
end2 secondary

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