请教一个双工不匹配问题
今天工作中发现一个问题请问下
交换机上显示如下LOG：
Dec 29 22:46:14: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet3/5 (not full duplex), with minghangbinguan FastEthernet0/29 (full duplex).
Dec 29 22:47:14: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet3/5 (not full duplex), with minghangbinguan FastEthernet0/29 (full duplex).
Dec 29 22:48:14: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet3/5 (not full duplex), with minghangbinguan FastEthernet0/29 (full duplex).
Dec 29 22:49:14: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet3/5 (not full duplex), with minghangbinguan FastEthernet0/29 (full duplex).
Dec 29 22:50:14: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet3/5 (not full duplex), with minghangbinguan FastEthernet0/29 (full duplex).
Dec 29 22:51:14: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet3/5 (not full duplex), with minghangbinguan FastEthernet0/29 (full duplex).
我查看了下端口的配置：
C4507R_ZHFW_MDF(config-if)#do sh int g3/5
GigabitEthernet3/5 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet Port, address is 001a.6ca3.e8f4 (bia 001a.6ca3.e8f4)
MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec,
reliability 255/255, txload 6/255, rxload 2/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Half-duplex, 100Mb/s, link type is auto, media type is 10/100/1000-TX
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:10, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 85023
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 898000 bits/sec, 277 packets/sec
5 minute output rate 2371000 bits/sec, 286 packets/sec
1117457359 packets input, 717111151160 bytes, 0 no buffer
Received 3812498 broadcasts (1343188 multicasts)
27027784 runts, 0 giants, 0 throttles
27027858 input errors, 74 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
963784518 packets output, 532338579639 bytes, 0 underruns
488 output errors, 36316131 collisions, 0 interface resets
0 babbles, 2 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
然后我修改了端口设置：
C4507R_ZHFW_MDF(config-if)#duplex full
C4507R_ZHFW_MDF(config-if)#do sh int g3/5
GigabitEthernet3/5 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet Port, address is 001a.6ca3.e8f4 (bia 001a.6ca3.e8f4)
MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec,
reliability 255/255, txload 2/255, rxload 2/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Half-duplex, 100Mb/s, link type is auto, media type is 10/100/1000-TX
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:27, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 85023
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 800000 bits/sec, 222 packets/sec
5 minute output rate 1148000 bits/sec, 186 packets/sec
1117697483 packets input, 717210726733 bytes, 0 no buffer
Received 3812682 broadcasts (1343282 multicasts)
27031006 runts, 0 giants, 0 throttles
27031080 input errors, 74 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
963994317 packets output, 532508479631 bytes, 0 underruns
488 output errors, 36323860 collisions, 0 interface resets
0 babbles, 2 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
为何还是半双工的呢？
望高手解答
该故障怎么解决……
感谢
觉得应该是速率不匹配 两边速率不匹配，导致自动协商为半双工。解决方法：两遍配置强制双工和速率，问题解决。 下面将会陆陆续续出现各种回复，帮助楼主解决问题！ 楼主试试用full-duplex命令
两边都修改下........ 支持楼上，LZ把两边都改一下哦。 -woniu2-楼主 懂了不的-woniu5- 哇 好多热心人在回答 楼主回个话呗-woniu1- 模拟器还是真机？
强制修改速率100M后再修改双工模式试一下
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