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A segment before this frame was lost

What is causing a significant amount of the message (A segment before this frame was lost) in traffic on a MPLS routed WAN. Any help is appreciated. Running IBGP on MPLS backplane. Errors only noticeable on DS3 pportion of circuit. The following is DS3 output interface info from the router:


md254coreRtr01#show int serial1/0

Serial1/0 is up, line protocol is up

Hardware is DSXPNM Serial

Description: MDG Hub to vBNS Network

Internet address is

MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec,

reliability 245/255, txload 24/255, rxload 12/255

Encapsulation PPP, LCP Open

Listen: CDPCP

Open: IPCP, crc 16, loopback not set

Keepalive set (10 sec)

Restart-Delay is 0 secs

Last input 00:00:01, output 00:00:07, output hang never

Last clearing of "show interface" counters 01:15:32 ********

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 2188000 bits/sec, 644 packets/sec

5 minute output rate 4172000 bits/sec, 677 packets/sec

3207565 packets input, 1842773719 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 1 giants, 0 throttles

496338 input errors, 496337 CRC, 205118 frame, 30919 overrun, 0 ignored, 134896 abort *******

3097407 packets output, 2038896853 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

DSU mode 0, bandwidth 44210, real bandwidth 44210, scramble 0 md254coreRtr01#



Re: A segment before this frame was lost

I think you got this type of error :

"The segment before this frame was lost" Look for one of these frames in "Frame 78". Can you send me the sniff trace of that site in particular which you had problem with over the tunnel.

The following url will help you

New Member

Re: A segment before this frame was lost

I have attached 2 filtered wireshark capture filters showing the segment errors and others.


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