Re: Serial interface error.

Get the physical circuit checked with the Telco.There are way too many CRC
errors on that circuit. Will also cause your poor performance and the reason
why you can't utilize all the bandwidth.

CCIE#23962 (SP)

On May 15, 2010 6:26 PM, "Mahmoud Nossair" <mahmoud.nossair_at_gmail.com>
wrote:

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 - 18:54:10 ART