Erich, Check this link out.....Goes through a pretty good trouble shooting table for CRC and input errors.
http://www.cisco.com/univercd/cc/td/doc/product/voice/ics7750/tblshoot/tsser ial.htm#58873 Table 7-3: Troubleshooting Serial Line Input Errors HTH, Scott -----Original Message----- From: Erich Kuehn [mailto:[EMAIL PROTECTED]] Sent: Wednesday, January 09, 2002 10:09 AM To: [EMAIL PROTECTED] Subject: Serial Line problems [7:31426] Ive got a little problem, im hoping someone can shed some light on. I work for an isp, lately we've had a bunch of issues with some new turnups. While the circuit looks good, i.e. the pvc (frame-relay ietf) is established and standard (100 byte) pings work fine. Once we start to increase the size of the payload (to say 1500 bytes) the circuit chokes and we get dropped packets, The pvc never goes down, but performance is degraded seriously, These circuits do not have policing turned on. The statics from the interface and service module are as follows. We we question the local loop provider they say that if they can run clean to the NIU they are fine, and thus ends their responsiblilty, while this may be true, Im running the same configs on hundreds of customers with no issue, only lately have I had about a dozen of them or so do this. Has anyone seen anything similar, did you resolve it? HOW? Thanks in advance Erich Serial0 is up, line protocol is up Hardware is PQUICC with Fractional T1 CSU/DSU MTU 4000 bytes, BW 1536 Kbit, DLY 20000 usec, reliability 171/255, txload 1/255, rxload 1/255 Encapsulation FRAME-RELAY IETF, loopback not set Keepalive set (10 sec) LMI enq sent 112, LMI stat recvd 91, LMI upd recvd 0, DTE LMI up LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0 LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE FR SVC disabled, LAPF state down Broadcast queue 0/64, broadcasts sent/dropped 21/0, interface broadcasts 0 Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters 00:18:42 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: weighted fair Output queue: 0/1000/64/0 (size/max total/threshold/drops) Conversations 0/3/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) Available Bandwidth 1152 kilobits/sec 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 1085 packets input, 750046 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 52061 input errors, 51262 CRC, 660 frame, 0 overrun, 0 ignored, 139 abort 1177 packets output, 445635 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up Serial0.2 is up, line protocol is up Hardware is PQUICC with Fractional T1 CSU/DSU Internet address is x.x.x.170/30 MTU 4000 bytes, BW 1544 Kbit, DLY 20000 usec, reliability 184/255, txload 1/255, rxload 1/255 Encapsulation FRAME-RELAY IETF sh service-module s0 Module type is T1/fractional Hardware revision is 0.80, Software revision is 0.2, Image checksum is 0x70F47262, Protocol revision is 0.1 Receiver has no alarms. Framing is ESF, Line Code is B8ZS, Current clock source is line, Fraction has 24 timeslots (64 Kbits/sec each), Net bandwidth is 1536 Kbits/sec. Last module self-test (done at startup): Passed Last clearing of alarm counters 00:22:04 loss of signal : 0, loss of frame : 0, AIS alarm : 0, Remote alarm : 0, Module access errors : 0, Total Data (last 96 15 minute intervals): 24480 Line Code Violations, 24480 Path Code Violations 0 Slip Secs, 103 Fr Loss Secs, 30984 Line Err Secs, 10036 Degraded Mins 30941 Errored Secs, 22197 Bursty Err Secs, 103 Severely Err Secs, 0 Unavail Secs Data in current interval (714 seconds elapsed): 255 Line Code Violations, 255 Path Code Violations 0 Slip Secs, 2 Fr Loss Secs, 381 Line Err Secs, 12 Degraded Mins 380 Errored Secs, 311 Bursty Err Secs, 2 Severely Err Secs, 0 Unavail Secs Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31433&t=31426 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
