09-17-2010 05:33 AM - edited 03-06-2019 01:02 PM
Hi,all
I have two cisco 3845 routers,every router contains one HWIC-2FE card and 2GE port .
But recently ,I found that something is wrong with my HWIC-2FE card in one router.
These two FE ports does not forward data, if i reload this router ,every thing is ok ,but after
about one month,these two ports does not work again. But the other router is always normal.
I get "show interfaces",as follows:
"
FastEthernet0/0/0 is up, line protocol is up
Hardware is FastEthernet, address is 8843.e149.13ee (bia 8843.e149.13ee)
Internet address is 29.48.252.2/30
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Half-duplex, 100Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 01:16:25, output 00:00:04, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/28293/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
48586325 packets input, 1670785161 bytes
Received 7373 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
110314217 packets output, 3616246667 bytes, 0 underruns
138239 output errors, 163725 collisions, 7 interface resets
0 unknown protocol drops
0 babbles, 56277 late collision, 144719 deferred
8 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
FastEthernet0/0/1 is up, line protocol is up
Hardware is FastEthernet, address is 8843.e149.13ef (bia 8843.e149.13ef)
Internet address is 29.50.121.253/30
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 1d00h, output 00:00:02, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/44906/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
546353 packets input, 87859593 bytes
Received 48 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
978135 packets output, 127247342 bytes, 0 underruns
104 output errors, 0 collisions, 7 interface resets
1 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
8 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
"
ps:
Interface F0/0/0 connect to ISP,ISP provide 6M full duplex,
Interface F0/0/1 connect to the interface f0/0/1 of the other 3845 router,
I'm glad to see your suggestion ,thank you very much.
09-17-2010 07:02 AM
Hi,
Interface fa0/0/0 is in half duplex and fa0/0/1 is in full duplex.
Do you have the right cable for both interfaces (Cat-5)? Also, the distance can only be up to 100 Meters (328 feet).
HTH
Reza
09-17-2010 07:31 PM
Hi,Reza
Firstly,thank you for your reply.
interface fa0/0/0 is really in half duplex, but when the router run normally,this interface is in full duplex,
the distance of both cables are less than ten Meters ,and the cable for interface fa0/0/1 is provided with the product,
I'll check the the other cable soon.
In addition,if the cable pluged in the interface fa0/0/0 is bad,would it cause the other interface (interface fa0/0/1) error ?
thank you
kefeng li
09-17-2010 07:37 PM
Hi Kefeng,
It should not. The interfaces are independent from each other unless something is wrong with the HWIC module itself.
Also, what version of IOS are you running?
HTH
Reza
09-17-2010 09:54 PM
Hi,Reza
The IOS version is c3845-ipbase-mz.124-15.T10.bin,
Kefeng Li
09-18-2010 12:54 AM
Hello,
Do you know if your ISP is using hard coded speed/duplex values? If yes, can you ask them to set it to auto? If they cannot, then you might have to put an off-the-shelf switch in between the router and the ISP to make them compatible. The issue seems to be due to the compatibility between the ISP router and your router interfaces.
Regards,
NT
09-18-2010 05:15 AM
Hello,Nagaraja Thanthry
This router was not always being in half-duplex mode ,only happened after the crash. But I'll check it and try your suggestion tormorrow,
Thank you,
Kefeng Li
10-11-2010 02:25 AM
Dear all,
The error is the motherboard in 3845,after changing it ,it returns to normal.
thank you for your suggestion.
Best Regards,
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