lمشکل پورت روتر

من یک روتر 7200 دارم که با fast ethernet به سوییچ 2950 وصل شده و تا قبل از این بدون مشکل خاصی کار میکرد
جدیدا روی پورت collision بوجود آمده و led آن سبز بوده و برای چند لحظه نارنجی می شود .
به نظر شما مشکل چطور حل می شود کابل رو هم عوض کردم نشد
router:
MTU 1500 bytes, BW 72000 Kbit, DLY 100 usec,
reliability 255/255, txload 111/255, 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 00:00:01, output 00:00:00, output hang never
Last clearing of "show interface" counters 03:23:00
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 2000 bits/sec, 3 packets/sec
30 second output rate 31481000 bits/sec, 4262 packets/sec
25905 packets input, 2350165 bytes
Received 3272 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
55152934 packets output, 3402558427 bytes, 5459 underruns
[B][COLOR=darkorange]5459 output errors, 5459 collisions, 0 interface resets[/COLOR][/B]
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
switch port :

FastEthernet0/2 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 0017.9512.c802 (bia 0017.9512.c802)
Description: "Connect to as6-rtr-01 port fas0/3"
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 82/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 100BaseTX
input flow-control is unsupported output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:50, output 00:00:01, output hang never
Last clearing of "show interface" counters 03:28:36
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 32277000 bits/sec, 4296 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
55485929 packets input, 3979944849 bytes, 0 no buffer
Received 2973 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
[B][SIZE=2][COLOR=darkorange] 5456 input errors, 5456 CRC, 0 frame, 0 overrun, 0 ignored[/COLOR][/SIZE][/B]
0 watchdog, 2971 multicast, 0 pause input
0 input packets with dribble condition detected
33553 packets output, 2961185 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out

مگه رو روتر و سوييچ هم collision ميشه؟!

[LEFT]Check the Patch cord
use the commands DUPLEX FULL & SPEED 100 to hard code uplex nad speed on both device. te problem is auto negotiation on the devices[/LEFT]

روی پورت روتر چه پروتکلی کانفیگ کردی؟
این پورتی که به روتر وصله از برودکست جدا کردی؟