06-08-2012 12:23 AM - edited 03-04-2019 04:36 PM
Dear All,
I have issue on Cisco Router 1841 on port F0/0 is protocol down
Router#sh ip int br
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 unassigned YES unset up down
FastEthernet0/1 unassigned YES unset up up
And i try to no shut on port F0/0 but it still donw and FDX,100 and Link don't have light.
i trty to change cable stragth and cross already but it still down, How can we know this port spoil?
Best Regards,
Rechard
06-08-2012 12:30 AM
Hi Rechard,
Check
1) Cabling - use a cable that is known to be working
2) Duplex - either Auto/Auto on both sides or hard coded for speed and duplex
3) IOS - are you using a stable IOS?
4) Change the device it is connected to on the other end to see if there is any change
Specially configure these :
Duplex full
Speed 100
Duplex half
Speed 10
Duplex half
Speed 100
Double full
Speed 10
Try this able Combination and let me know.
Please rate, if it helps.
Regards
06-08-2012 12:52 AM
Dear Sir,
I tasted already but it still problem:
1) Cabling - use a cable that is known to be working
The cable is working, if i connect this to port 0/1 is working.
2) Duplex - either Auto/Auto on both sides or hard coded for speed and duplex
i try to change Auto/Auto or halft , speed 100 or speed 10 but it still down.
3) IOS - are you using a stable IOS?
This IOS that i use : advipservicesk9-mz.124-9.T3
4) Change the device it is connected to on the other end to see if there is any change
I connected from My PC to Cisco Router .
Best Regards,
Rehcard
06-08-2012 01:14 AM
can you put your config from the router of the interface fa0/0 and the config from the other side where its is connected???
may be its a problem of trunking protocol.
REgards
06-08-2012 01:21 AM
Dear Sir,
This config that i done :
interface FastEthernet0/0
ip address 192.168.7.4 255.255.255.0
speed 100
full-duplex
!
Router#sh ip int br
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.7.4 YES manual up down
FastEthernet0/1 unassigned YES NVRAM up down
Router#
Now port F0/0 connecting to other devide.
it still down, how can we know this port spoil or problem? i think may be it hardware (port f0/0) but i dont reference for this port spoil or not....
Best Regards,
Rechard
06-08-2012 01:30 AM
can you give me the out put of this coomand on router: sh interface fa0/0
and other output from the other device where this interface connected:sh int _
Regards
06-08-2012 01:42 AM
Dear Sir,
Router#sh int f0/0
FastEthernet0/0 is up, line protocol is down
Hardware is Gt96k FE, address is 64a0.e7e3.a38e (bia 64a0.e7e3.a38e)
Internet address is 192.168.7.4/24
MTU 1500 bytes, BW 100000 Kbit, 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 never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (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
0 packets input, 0 bytes
Received 0 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
127 packets output, 8547 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
06-08-2012 01:44 AM
where this port connected -....to .....-------------------------> pc
..........................> switch ?
Regards
06-08-2012 02:01 AM
Dear Sir,
I test only one port, i mean port f0/0 connect to PC, and also i connect port f0/0 to switch ( normal switch and not cisco)
and it still not work.
Best Regards,
Rechard
06-08-2012 02:07 AM
Hi ,
Just try
1. use new crossover cable to connect to pc or switch.
2. if you are conneting with switch then please check the port setting on switch: should be Full-duplex, 100Mb/s.
3. if you are connecting with a pc then please go and check the NIC setting:
NIC SETTING. my computer properties>hardware>device manager>network adaptor properties>link speed duplex mode should be full and speed 100Mbs.
Regards
rate it if it helps.
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