Erro Abort na interface - Cisco 2811

Pessoal,

Alguém sabe o que ocasiona esse incremento de erro ABORT na interface do router, o link é de 512Kbps e está com alta utilização:

Serial0/0/0 is up, line protocol is up
Hardware is GT96K Serial
MTU 1500 bytes, BW 512 Kbit/sec, DLY 20000 usec,
reliability 255/255, txload 20/255, rxload 248/255
Encapsulation PPP, LCP Open, multilink Open
Link is a member of Multilink bundle Multilink601, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:20:27
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair [suspended, using FIFO]
FIFO output queue 0/40, 0 drops
5 minute input rate 498000 bits/sec, 154 packets/sec
5 minute output rate 42000 bits/sec, 38 packets/sec
189280 packets input, 76090527 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
29 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 29 abort 47454 packets output, 7267377 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

A melhor forma de diagnosticar é uusando o Output Interpreter da Cisco:
http://www.cisco.com/pcgi-bin/Support/OutputInterpreter/home.pl

Cola o retorno desse comando lá que ele vai te orientando no troubleshooting.
Ele faz inclusive sugestões de comandos "debug"...

Att.
Jr,