We only have one T1 left, but in my experience those errors are almost always a carrier problem. It could be a bad card as well, but I would have the carrier test the line first.
From: [email protected] [mailto:[email protected]] On Behalf Of David Mazzaccaro Sent: Wednesday, October 09, 2013 9:40 AM To: NT System Admin Issues ([email protected]) Subject: [NTSysADM] Cisco 1841 router errors after clear counters I have a T1 at a remote office where the users are complaining of lag. I get 22ms ping (which is typical) to this site, but after the clearing counters about 12 hours ago... it looks like a lot of errors. Does this typically mean something in particular to point me in the right direction? Is it possible this router (or the T1 card in it) is bad? Or is this definitely a carrier problem... who I am still waiting for a call back from. The reliability below shows 255/255, but this is constantly changing to as low as 139/255. Serial0/0/0 is up, line protocol is up Hardware is GT96K with integrated T1 CSU/DSU Description: => MPLS VPN Internet address is xxx.xxx.xxx.xxx/30 MTU 1500 bytes, BW 1500 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 22/255, rxload 39/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters 12:35:09 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: Class-based queueing Output queue: 0/1000/64/0 (size/max total/threshold/drops) Conversations 0/12/256 (active/max active/max total) Reserved Conversations 1/1 (allocated/max allocated) Available Bandwidth 15 kilobits/sec 5 minute input rate 233000 bits/sec, 106 packets/sec 5 minute output rate 134000 bits/sec, 112 packets/sec 404544 packets input, 103698359 bytes, 0 no buffer Received 4480 broadcasts, 1 runts, 1 giants, 0 throttles 1303515 input errors, 1303509 CRC, 9904 frame, 1576 overrun, 0 ignored, 900 8 abort 428375 packets output, 63850676 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up .
