Re: Serial interface error.

From: Scott Morris <swm_at_emanon.com>
Date: Sat, 15 May 2010 20:24:56 -0400

 Have you considered then that you are looking at a long time? :)

"Last clearing of 'show interface' counters never"

So in five years, I would view those errors as "no big deal".... You can
do a "show version" to see your uptime to get a better idea of how long
those counts are around for.

But if you are having bandwidth problems, I'd lean more towards your 256K
circuit and potentially lack of QoS/prioritization on your configuration!

Cheers,

Scott

Mahmoud Nossair wrote:

  This line is working for more than 5 years.

  Best Regards,
  
  ==============================
  Mahmoud Nossair

  -----Original Message-----
  From: GAURAV MADAN [ mailto:gauravmadan1177_at_gmail.com ]
  Sent: Saturday, May 15, 2010 9:25 PM
  To: Mahmoud Nossair
  Cc: ccielab_at_groupstudy.com Subject: Re: Serial interface error.
  
  I will be interseted in knowing if this line evr worked fine .. i mean
  does this started all of sudden .
  Or Is this a new line from telco ?
  
  Gaurav
  
  2010/5/15 Mahmoud Nossair <mahmoud.nossair_at_gmail.com> :

    So did you mean that the problem may be physically, like an interference

  or

    something like that? Causing all the errors.

    Best Regards,
    
    ==============================
    Mahmoud Nossair

    -----Original Message-----
    From: GAURAV MADAN [ mailto:gauravmadan1177_at_gmail.com ]
    Sent: Saturday, May 15, 2010 9:08 PM
    To: Mahmoud Nossair
    Cc: rdarsey_at_gmail.com ; ccielab_at_groupstudy.com Subject: Re: Serial interface error.
    
    Guess .. this is not a clock issue .
    This is a V.35 cable .. can go high speeds ( unlike RS232 ) and also
    if there is a clocking problem .. it shd have shown clock not recieved
    ..
    
    DCE is probably configured for 256kbps and DTE is approximately getting

  that

    .
    
    Thnx
    Gaurav Madan
    CCIE
    
    On Sat, May 15, 2010 at 11:26 PM, Mahmoud Nossair <mahmoud.nossair_at_gmail.com> wrote:

      Please find the "Show controllers serial 1/3"
      
      M4T: show controller:
      PAS unit 3, subunit 3, f/w version 1-45, rev ID 0x2800001, version 3
      idb = 0x6256E6E4, ds = 0x625704EC, ssb=0x625708A0
      Clock mux=0x0, ucmd_ctrl=0xC, port_status=0x74
      Serial config=0x8, line config=0x200
      maxdgram=1608, bufpool=78Kb, 120 particles
          DCD=up DSR=up DTR=up RTS=up CTS=up
      line state: up
      cable type : V.35 DTE cable, received clockrate 255840
      
      base0 registers=0x3D000000, base1 registers=0x3D002000
      mxt_ds=0x626EF858, rx ring entries=78, tx ring entries=128
      rxring=0x3B6CE20, rxr shadow=0x62576E94, rx_head=0
      txring=0x3B6D0C0, txr shadow=0x62577268, tx_head=34, tx_tail=34,

    tx_count=0

      throttled=0, enabled=0
      halted=0, last halt reason=0
      Microcode fatal errors=0
      rx_no_eop_err=0, rx_no_stp_err=0, rx_no_eop_stp_err=0
      rx_no_buf=0, rx_soft_overrun_err=0, dump_err= 0, bogus=0, mxt_flags=0x0
      tx_underrun_err=1, tx_soft_underrun_err=1, tx_limited=1(2)
      tx_fullring=13147591, tx_started=17925099 mxt_flush_count=0
      rx_int_count=34348762, tx_int_count=31081383
      
      Best Regards,
      
      ==============================
      Mahmoud Nossair

      -----Original Message-----
      From: rdarsey_at_gmail.com [ mailto:rdarsey_at_gmail.com ]
      Sent: Saturday, May 15, 2010 8:49 PM
      To: Mahmoud Nossair; ccielab_at_groupstudy.com Subject: Re: Serial interface error.
      
      What does a "show controllers" show? Any slips? If so clocking may be

  an

      issue. Verify that clock is either provided by the ISP or in the case of

    a

      point to point circuit that one side is set to clock source internal and

    one

      is set to clock source line.
      
      Rick
      -----Original Message-----
      From: "Mahmoud Nossair" <mahmoud.nossair_at_gmail.com> Date: Sat, 15 May 2010 19:24:31
      To: <ccielab_at_groupstudy.com> Subject: Serial interface error.
      
      Dear Experts
      
      We have some branches connecting to the Head Quarter through a telecom
      company, when I running "show interface serial 1/3" I found there are

  many

      errors,
      
      I know that there is an errors on the fastethetnet interfaces happens

  from

      collisions duplex mismatch, but I am wondering what is the kind of the
      errors will be occurred on the serial interfaces .
      
      There is one thing also , we never reach the maximum bandwidth, although

    we

      are suffering from a congestion.

      Here is show interface output:

      ======================================
      
      Serial1/3 is up, line protocol is up
      
       Hardware is M4T
      
       Internet address is x.x.x.x/30
      
       MTU 1500 bytes, BW 2000 Kbit, DLY 20000 usec,
      
          reliability 255/255, txload 21/255, rxload 16/255
      
       Encapsulation HDLC, crc 16, loopback not set
      
       Keepalive set (10 sec)
      
       Restart-Delay is 0 secs
      
       Last input 00:00:00, 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:
      1154031
      
       Queueing strategy: weighted fair
      
       Output queue: 0/1000/64/1154031 (size/max total/threshold/drops)
      
          Conversations 0/36/256 (active/max active/max total)
      
          Reserved Conversations 0/0 (allocated/max allocated)
      
          Available Bandwidth 1900 kilobits/sec
      
       30 second input rate 133000 bits/sec, 245 packets/sec
      
       30 second output rate 165000 bits/sec, 134 packets/sec
      
          31407760 packets input, 2687152838 bytes, 0 no buffer
      
          Received 41308 broadcasts, 0 runts, 0 giants, 0 throttles
      
          27636 input errors, 27635 CRC, 0 frame, 1 overrun, 0 ignored, 0 abort
      
          16397297 packets output, 3885690293 bytes, 1 underruns
      
          1 output errors, 0 collisions, 3 interface resets
      
          0 output buffer failures, 0 output buffers swapped out
      
          4 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up
      
      ==============================================================

      Please any help regarding this issue.
      
      Thanks in advance.

      Best Regards,
      
      Mahmoud Nossair

      Blogs and organic groups at http://www.ccie.net
      _______________________________________________________________________
      Subscription information may be found at: http://www.groupstudy.com/list/CCIELab.html
      
      Blogs and organic groups at http://www.ccie.net
      _______________________________________________________________________
      Subscription information may be found at: http://www.groupstudy.com/list/CCIELab.html

  Blogs and organic groups at http://www.ccie.net
  _______________________________________________________________________
  Subscription information may be found at: http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Sat May 15 2010 - 20:24:56 ART

This archive was generated by hypermail 2.2.0 : Tue Jun 01 2010 - 07:09:53 ART