CRC errors

Hello,

I have a cisco 2821 with a HWIC-1ADSL running.

When I give a "show interface atm0/0/0" command I see CRC-errors (about

30/min): (also note that there are no input errors)

router#sh int atm0/0/0 ATM0/0/0 is up, line protocol is up Hardware is HWIC-DSLSAR (with Alcatel ADSL Module) MTU 4470 bytes, sub MTU 4470, BW 1016 Kbit, DLY 500 usec, reliability 255/255, txload 1/255, rxload 40/255 Encapsulation ATM, loopback not set Encapsulation(s): AAL5 AAL2, PVC mode 23 maximum active VCs, 256 VCs per VP, 1 current VCCs VC Auto Creation Disabled. VC idle disconnect time: 300 seconds Last input never, output 00:00:00, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 153 Queueing strategy: Per VC Queueing 5 minute input rate 162000 bits/sec, 1 packets/sec 5 minute output rate 1000 bits/sec, 2 packets/sec 88183 packets input, 125414082 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 29 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 48726 packets output, 3586484 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out

But when I give the command "show atm pvc 8/48" now I don't see them:

router#sh atm pvc 8/48 Description: N/A ATM0/0/0: VCD: 1, VPI: 8, VCI: 48, Connection Name: 0 UBR, PeakRate: 1016 (2397 cps) AAL5-MUX, etype:0x9, Flags: 0xC24, VCmode: 0x0, Encapsize: 4 OAM frequency: 0 second(s), OAM retry frequency: 1 second(s) OAM up retry count: 3, OAM down retry count: 5 OAM END CC Activate retry count: 3, OAM END CC Deactivate retry count: 3 OAM END CC retry frequency: 30 second(s), OAM SEGMENT CC Activate retry count: 3, OAM SEGMENT CC Deactivate retry count: 3 OAM SEGMENT CC retry frequency: 30 second(s), OAM Loopback status: OAM Disabled OAM VC Status: Not Managed ILMI VC status: Not Managed InARP DISABLED InPkts: 89329, OutPkts: 50188, InBytes: 126197123, OutBytes: 3856946 InPRoc: 1942, OutPRoc: 293, Broadcasts: 0 InFast: 87386, OutFast: 48232, InAS: 0, OutAS: 0 InPktDrops: 0, OutPktDrops: 226/0/226 (holdq/outputq/total) CrcErrors: 0, SarTimeOuts: 0, OverSizedSDUs: 0, LengthViolation: 0, CPIErrors: 0 Out CLP=1 Pkts: 0 OAM cells received: 0 F5 InEndloop: 0, F5 InSegloop: 0, F5 InEndcc: 0, F5 InSegcc: 0, F5 InAIS: 0, F5 InRDI: 0 F4 InEndloop: 0, F4 InSegloop: 0, F4 InAIS: 0, F4 InRDI: 0 OAM cells sent: 0 F5 OutEndloop: 0, F5 OutSegloop: 0, F5 OutEndcc: 0, F5 OutSegcc: 0, F5 OutAIS: 0, F5 OutRDI: 0 F4 OutEndloop: 0, F4 OutSegloop: 0, F4 OutRDI: 0 OAM cell drops: 0 Status: UP PPP: Virtual-Access2 from Dialer0 PPPoA Current State = VACCESS_ATTACHED PPPoA Latest Event = Vaccess Up PPPoA Latest Error = None PPPoA Session ID = 0 PPPoA Handle = 0x03000001, SSS Handle = 0x00000000 Switch Handle = 0x00000000, PPP Handle = 0x00000000 AAA Unique ID = 0x00000000, AIE Handle = 0x00000000

Any suggestions about what the problem can be? I already tried another IOS, but that makes no difference.

And here is the output of a "show dsl interface atm0/0/0":

router# sh dsl int atm0/0/0 ATM0/0/0 Alcatel 20190 chipset information ATU-R (DS) ATU-C (US) Modem Status: Showtime (DMTDSL_SHOWTIME) DSL Mode: ITU G.992.5 (ADSL2+) Annex A ITU STD NUM: 0x03 0x2 Chip Vendor ID: 'STMI' 'BDCM' Chip Vendor Specific: 0x0000 0x618F Chip Vendor Country: 0x0F 0xB5 Modem Vendor ID: 'CSCO' ' ' Modem Vendor Specific: 0x0000 0x0000 Modem Vendor Country: 0xB5 0x00 Serial Number Near: FOC10200R83CISCO73993205 Serial Number Far: Modem Version Near: 12.4(11)T Modem Version Far: Capacity Used: 100% 100% Noise Margin: 8.0 dB 7.5 dB Output Power: 17.0 dBm 12.0 dBm Attenuation: 39.0 dB 12.0 dB Defect Status: None None Last Fail Code: None Watchdog Counter: 0x79 Watchdog Resets: 0 Selftest Result: 0x00 Subfunction: 0x00 Interrupts: 3869 (0 spurious) PHY Access Err: 0 Activations: 1 LED Status: OFF LED On Time: 0 LED Off Time: 0 Init FW: init_AMR-R-2.5.042_no_bist.bin Operation FW: AMR-R-2.5.042.bin FW Source: embedded FW Version: 2.5.42

DS Channel1 DS Channel0 US Channel1 US Channel0 Speed (kbps): 0 13607 0 1016 Cells: 0 2759202 0 5858271 Reed-Solomon EC: 0 0 0 0 CRC Errors: 0 135 0 0 Header Errors: 0 83 0 0 Total BER: 0E-0 2158E-10 Leakage Average BER: 0E-0 2158E-10 Interleave Delay: 0 19 0 0

LOM Monitoring : Disabled

DMT Bits Per Bin

000: 0 0 0 0 0 0 0 6 8 A A B B C C C 010: C C C C D C C C C B B B A A A A 020: 0 2 4 4 6 7 8 8 9 9 9 A A A 9 9 030: 9 A A A 9 B C C C C C C C C C C 040: C B B C B B B B B B B B B B B B 050: B B B B B B B 2 B B B B B B B B 060: B B B B B B B B B B B B B B B A 070: A A A A A A A A A A A A A A A A 080: A A A A A A A A A A A A A A A A 090: A A A 9 9 A 9 9 9 9 9 9 9 9 9 9 0A0: 9 9 9 9 9 A 9 9 9 9 9 9 9 9 9 9 0B0: 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 0C0: 9 8 9 9 9 8 8 9 8 8 8 8 8 8 8 9 0D0: 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 0E0: 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 0F0: 9 9 8 A 8 8 8 8 8 8 8 8 8 8 8 8 100: A 9 9 9 9 8 8 7 6 5 4 4 0 8 8 8 110: 8 9 9 9 9 A A A A A A A B A A A 120: B A A A A A 8 A A A A A A A A A 130: A A A A A A A 8 A A A A A A 9 9 140: A A A 9 9 9 9 9 9 9 8 9 9 9 9 8 150: 4 8 8 9 9 9 9 8 8 8 8 8 8 8 8 8 160: 8 8 8 8 8 8 8 8 8 7 7 7 7 7 7 7 170: 7 7 7 7 7 7 7 7 7 7 7 7 7 6 6 7 180: 7 7 6 7 6 7 6 6 6 6 6 6 6 6 6 6 190: 6 6 6 6 6 6 6 6 6 6 6 6 6 5 5 5 1A0: 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 1B0: 5 5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 1C0: 4 4 3 4 4 4 4 4 4 4 4 4 3 3 3 3 1D0: 3 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2 1E0: 2 2 2 2 2 2 2 2 0 0 0 0 0 0 0 0 1F0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

DSL: Training log buffer capability is not enabled router#

Thanks in advance for the suggestions!

Roel

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Mike jones

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