步骤4、检查互联双方的速率双工的配置是否一致
通常建议使用默认设置自动协商速率双工，但在以下情况需要进行调整：
·
对方设备不支持自动协商，例如光电收发器，则需要在我端交换机上指定速率双工和流控
·
安装的光模块速率和接口速率不一致，例如在支持万兆速率的SFP接口上插入Mini-GBIC千兆光模块，则需要指定速率
·
对方设备配置了强制速率和双工，则我端需要配置成一样
参考如下操作过程：
Ruijie#show run int te 1/2
Building configuration...
Current configuration : 46 bytes
!
interface TenGigabitEthernet 1/2
speed 10G
Ruijie#
Ruijie#config t
Enter configuration commands, one per
line. End with CNTL/Z.
Ruijie(config)#int te 1/2
Ruijie(config-TenGigabitEthernet 1/2)#speed
10g -->
指定接口速率
Ruijie(config-TenGigabitEthernet 1/2)#duplex
full -->
指定全双工
Ruijie(config-TenGigabitEthernet
1/2)#flowcontrol off -->
指定流控
Ruijie(config-TenGigabitEthernet 1/2)#end
Ruijie#show run int te 1/2
Building configuration...
Current configuration : 60 bytes
!
interface TenGigabitEthernet 1/2
duplex full
speed 10G
Ruijie#
两端光口速率和双工各种配置和最终Link状态如下表所示：
|
Port A Speed/Duplex |
Port B Speed/Duplex |
Port A Status |
Port B Status |
|
auto/auto |
auto/auto |
up |
up |
|
auto/auto |
auto/full |
up |
up |
|
auto/auto |
auto/half |
up |
up |
|
auto/auto |
1000/auto |
down |
up |
|
auto/auto |
1000/full |
down |
up |
|
auto/auto |
1000/half |
down |
up |
|
|
|
|
|
|
1000/full |
1000/full |
up |
up |
|
1000/full |
1000/half |
up |
up |
|
1000/full |
1000/auto |
up |
up |
|
1000/full |
auto/full |
up |
down |
|
1000/full |
auto/half |
up |
down |
|
|
|
|
|
|
1000/half |
1000/half |
up |
up |
|
1000/half |
1000/auto |
up |
up |
|
1000/half |
auto/full |
up |
down |
|
1000/half |
auto/half |
up |
down |
|
|
|
|
|
|
auto/full |
auto/full |
up |
up |
|
auto/full |
auto/half |
down |
Down |
|
auto/full |
1000/auto |
down |
up |
|
|
|
|
|
|
auto/half |
auto/half |
up |
up |
|
auto/half |
1000/auto |
down |
up |
|
|
|
|
|
|
1000/auto |
1000/auto |
up |
up |