Deferred means the interface is doing Carrier Sense Multiple Access/Collition Detection (CSMA/CD) and when it sensed the carrier to determine if it was already in use, it was. So the interface had to wait (defer) until the medium wasn't in use anymore. This is only relevant to half duplex.
Notice that your interfaces seem to be using half duplex and 10 Mbps, despite being FastEthernet capable. I assume that's what this line means anyway: Half-duplex, 10Mb/s, 100BaseTX/FX If it's a point-to-point link (switch-to-switch or switch-to-workstation or switch-to-server), you should fix this. It should do full, 100 Mbps. The underruns are probably related. An underrun means "the number of times the transmitter ran faster than the interface could handle." (That's what Cisco says, though admittedly I've never really been able to parse that to be honest ;-), but I bet the underruns will go away once you fix the problem with the port doing 10 Mbps instead of 100 Mbps). Did these ports autonegotiate to half 10 or are they manually set that way? _______________________________ Priscilla Oppenheimer www.troubleshootingnetworks.com www.priscilla.com Md Nazri wrote: > > Hi guys, > > need help to explain the output from 'sh int' below > 1) what is 'underruns' and 'deferred' means..? > 2)Is 'underruns' and 'deferred' indicate a router problem or a > LAN problem..? > > CustomerHQ1>sh int faste0/0 > FastEthernet0/0 is up, line protocol is up > Hardware is i82543 (Livengood), address is 0005.dcff.4800 (bia > 0005.dcff.4800) > Internet address is x.x.x.x/16 > 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) > Half-duplex, 10Mb/s, 100BaseTX/FX > 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 15:42:23 > Queueing strategy: fifo > Output queue 0/40, 0 drops; input queue 0/75, 0 drops > 5 minute input rate 47000 bits/sec, 58 packets/sec > 5 minute output rate 10000 bits/sec, 21 packets/sec > 1022186 packets input, 106037882 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 > 427949 packets output, 38329316 bytes, 0 > underruns(947/2503/0) > 0 output errors, 3450 collisions, 0 interface resets > 0 babbles, 0 late collision, 19053 deferred > 0 lost carrier, 0 no carrier > 0 output buffer failures, 0 output buffers swapped out > > CustomerHQ1>sh int faste0/0 > FastEthernet0/0 is up, line protocol is up > Hardware is i82543 (Livengood), address is 0005.dcff.4800 (bia > 0005.dcff.4800) > Internet address is x.x.x.x/16 > 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) > Half-duplex, 10Mb/s, 100BaseTX/FX > 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 15:42:31 > Queueing strategy: fifo > Output queue 0/40, 0 drops; input queue 0/75, 0 drops > 5 minute input rate 45000 bits/sec, 56 packets/sec > 5 minute output rate 9000 bits/sec, 19 packets/sec > 1022608 packets input, 106071585 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 > 428100 packets output, 38338857 bytes, 0 > underruns(948/2504/0) > 0 output errors, 3452 collisions, 0 interface resets > 0 babbles, 0 late collision, 19062 deferred > 0 lost carrier, 0 no carrier > 0 output buffer failures, 0 output buffers swapped out > > > > Thanks, > > rgds > nazri > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65708&t=65706 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
