combo口的电口接线不亮 combo模式协商问题，可以强制电口

华为路由器ar2240今天升级之后是成功的，我重启一下ok。之后为了确保，我再重启一下，发现之前连接网线的那个GE1（代号g0/0/1）一直不亮了，物理状态down。进入设备重启接口也不行。是因为combo口模式协商问题，可以强制电口看看！

[ZD-AR2240]dis int g0/0/1
GigabitEthernet0/0/1 current state : DOWN
Line protocol current state : DOWN
Description:HUAWEI, AR Series, GigabitEthernet0/0/1 Interface
Route Port,The Maximum Transmit Unit is 1500
Internet Address is 10.30.0.2/28
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 4482-e5b9-d1c4
Last physical up time : -
Last physical down time : 2018-07-11 17:06:02
Current system time: 2018-07-11 17:14:03
Port Mode: AUTO
Speed : 1000, Loopback: NONE
Duplex: FULL, Negotiation: ENABLE
Mdi : AUTO, Clock : -
Last 300 seconds input rate 0 bits/sec, 0 packets/sec
Last 300 seconds output rate 0 bits/sec, 0 packets/sec
Input peak rate 0 bits/sec,Record time: -
Output peak rate 0 bits/sec,Record time: -

Input: 0 packets, 0 bytes
Unicast: 0, Multicast: 0
Broadcast: 0, Jumbo: 0
Discard: 0, Total Error: 0

CRC: 0, Giants: 0

[ZD-AR2240]dis int g0/0/1
GigabitEthernet0/0/1 current state : DOWN
Line protocol current state : DOWN
Description:HUAWEI, AR Series, GigabitEthernet0/0/1 Interface
Route Port,The Maximum Transmit Unit is 1500
Internet Address is 10.30.0.2/28
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 4482-e5b9-d1c4
Last physical up time : -
Last physical down time : 2018-07-11 17:06:02
Current system time: 2018-07-11 17:17:19
Port Mode: AUTO
Speed : 1000, Loopback: NONE
Duplex: FULL, Negotiation: ENABLE
Mdi : AUTO, Clock : -
Last 300 seconds input rate 0 bits/sec, 0 packets/sec
Last 300 seconds output rate 0 bits/sec, 0 packets/sec
Input peak rate 0 bits/sec,Record time: -
Output peak rate 0 bits/sec,Record time: -

Input: 0 packets, 0 bytes
Unicast: 0, Multicast: 0
Broadcast: 0, Jumbo: 0
Discard: 0, Total Error: 0

CRC: 0, Giants: 0

[ZD-AR2240]int g0/0/1
[ZD-AR2240-GigabitEthernet0/0/1]undo negotiation auto
Error: This port or this mode doesn't support this command.

[ZD-AR2240-GigabitEthernet0/0/1]combo-port ?
auto Self identifiable
copper Copper
fiber Fiber
[ZD-AR2240-GigabitEthernet0/0/1]combo-port cop
[ZD-AR2240-GigabitEthernet0/0/1]combo-port copper
Info: This operation may cause the interface to be Up/Down.
[ZD-AR2240-GigabitEthernet0/0/1]
Jul 11 2018 17:19:06+00:00 ZD-AR2240 %%01IFPDT/4/IFSTATE(l)[0]:Interface GigabitEthernet0/0/1 has turned into UP state.
[ZD-AR2240-GigabitEthernet0/0/1]
Jul 11 2018 17:19:06+00:00 ZD-AR2240 %%01IFNET/4/LINKSTATE(l)[1]:The line protocol IP on the interface GigabitEthernet0/0/1 has entered the UP state.
[ZD-AR2240-GigabitEthernet0/0/1]
[ZD-AR2240-GigabitEthernet0/0/1]
[ZD-AR2240-GigabitEthernet0/0/1]
[ZD-AR2240-GigabitEthernet0/0/1]
[ZD-AR2240-GigabitEthernet0/0/1]qui
[ZD-AR2240]qui

Current system time: 2018-07-11 17:45:27
Port Mode: FORCE COPPER
Speed : 1000, Loopback: NONE
Duplex: FULL,

当然正常时候应该是自协商成电口的 如下：
AR2240>dis int g0/0/1
GigabitEthernet0/0/1 current state : DOWN
Line protocol current state : DOWN
Description:HUAWEI, AR Series, GigabitEthernet0/0/1 Interface
Route Port,The Maximum Transmit Unit is 1500
Internet protocol processing : disabled
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 4482-e5b9-d1c4
Last physical up time : 2018-07-11 17:29:33
Last physical down time : 2018-07-11 17:32:57
Current system time: 2018-07-11 17:44:33
Port Mode: AUTO COPPER
Speed : 100, Loopback: NONE
Duplex: FULL, Negotiation: ENABLE
Mdi : AUTO, Clock : -
Last 300 seconds input rate 0 bits/sec, 0 packets/sec
Last 300 seconds output rate 0 bits/sec, 0 packets/sec
Input peak rate 2240 bits/sec,Record time: 2018-07-11 17:30:01
Output peak rate 560 bits/sec,Record time: 2018-07-11 17:32:41