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

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Received on Sat May 15 2010 - 17:48:40 ART