Cisco 1750 路由器安装模块卡后用show ip interface brief看不到信息

“unknown”为未识别，有以下几种方案可以选择测试：
1、硬件问题：确保WIC-1ENET模块卡为正常模块，重新插拔WIC-1ENET模块卡，再观察。
2、软件问题：此IOS版本不支持此板卡，升级至支持此版本的IOS。
3、如果都不行，估计是硬件故障了。

说明你的模块没有正常添加，可以尝试注册。
正常信息如下
R1#show diag
Slot 0:
Fast-ethernet on C7200 I/O card with MII or RJ45 Port adapter, 1 port
Port adapter is analyzed
Port adapter insertion time 00:02:03 ago
EEPROM contents at hardware discovery:
Hardware revision 1.14 Board revision A0
Serial number 4294967295 Part number 73-2956-02
FRU Part Number C7200-IO-FE-MII/RJ
Test history 0x0 RMA number 00-00-00
EEPROM format version 1
EEPROM contents (hex):
0x00: 01 83 01 0E FF FF FF FF 49 0B 8C 02 00 00 00 00
0x10: 50 00 00 00 98 12 28 00 00 FF FF FF FF FF FF FF
0x20: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x30: FF FF FF FF FF FF FF FF FF FF FF FF

Slot 1:
Ethernet Port adapter, 8 ports
Port adapter is analyzed
Port adapter insertion time 00:02:02 ago
EEPROM contents at hardware discovery:
Hardware revision 1.14 Board revision A0
Serial number 4294967295 Part number 73-1556-04
FRU Part Number PA-8E=
Test history 0x0 RMA number 00-00-00
EEPROM format version 1
EEPROM contents (hex):
0x00: 01 01 01 0E FF FF FF FF 49 06 14 04 00 00 00 00
0x10: 50 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF
0x20: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x30: FF FF FF FF FF FF FF FF FF FF FF FF

R1#
R1#show ip inter bri
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES NVRAM administratively down down
Ethernet1/0 192.168.1.1 YES NVRAM up up
Ethernet1/1 unassigned YES NVRAM administratively down down
Ethernet1/2 unassigned YES NVRAM administratively down down
Ethernet1/3 unassigned YES NVRAM administratively down down
Ethernet1/4 unassigned YES NVRAM administratively down down
Ethernet1/5 unassigned YES NVRAM administratively down down
Ethernet1/6 unassigned YES NVRAM administratively down down
Ethernet1/7 unassigned YES NVRAM administratively down down
Loopback0 1.1.1.1 YES NVRAM up up
R1#