Hi,
I have a cisco 2600 series router that has been functioning quite normally for a couple of years. Within the last 2-3 weeks, I've been getting %AMDP2_FE-5-EXCESSCOLL: Ethernet0/0 TDR=1, TRC=0 errors sent to my syslog. My sho int ethernet0/0 is as follows:
Ethernet0/0 is up, line protocol is up Hardware is AmdP2, address is 0002.16bb.64a0 (bia 0002.16bb.64a0) Internet address is 208.44.26.1/23 MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters never Queueing strategy: fifo Output queue 0/40, 137 drops; input queue 0/75, 30 drops 5 minute input rate 58000 bits/sec, 31 packets/sec 5 minute output rate 29000 bits/sec, 28 packets/sec 117808771 packets input, 2851115318 bytes, 0 no buffer Received 194097 broadcasts, 0 runts, 0 giants, 0 throttles 11226 input errors, 0 CRC, 0 frame, 0 overrun, 11226 ignored 0 input packets with dribble condition detected 105960040 packets output, 441677166 bytes, 0 underruns 449 output errors, 622296 collisions, 1 interface resets 0 babbles, 0 late collision, 1019742 deferred 0 lost carrier, 0 no carrier 0 output buffer failures, 0 output buffers swapped out
I have googled this, and read that excessive collisions is often caused by bad cabling/connectors. I also read that the TDR can be used to pinpoint where along the cabling the fault may lie. There is supposedly an equation that will help me figure out what the TDR=1 means as far as where a cable fault might be but I can't find that equation. Can someone help?
Thanks,
Lisa Casey