Protocl error notevoli su seriale FR

[Rizio]

Ragazzi, ho una seriale FrameRelay che mi stà collezionando una serie notevole di "protocol error", ogni volta che faccio uno sh int li vedo incrementati notevolmente, cosa indicano secondo voi?

La situazione è la seguente:
-ROUTER 1-

Codice: Seleziona tutto

Serial0/0/0 is up, line protocol is up
  Hardware is GT96K Serial
  MTU 1500 bytes, BW 2048 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 70/255, rxload 41/255
  Encapsulation FRAME-RELAY IETF, loopback not set
  Keepalive set (10 sec)
  CRC checking enabled
  LMI enq sent  83, LMI stat recvd 83, LMI upd recvd 0, DTE LMI up
  LMI enq recvd 0, LMI stat sent  0, LMI upd sent  0
  LMI DLCI 0  LMI type is ANSI Annex D  frame relay DTE  segmentation inactive
  FR SVC disabled, LAPF state down
  Broadcast queue 0/64, broadcasts sent/dropped 714/0, interface broadcasts 714
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 00:13:43
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 35
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/35 (size/max total/threshold/drops)
     Conversations  0/155/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1536 kilobits/sec
  5 minute input rate 334000 bits/sec, 315 packets/sec
  5 minute output rate 567000 bits/sec, 322 packets/sec
     245216 packets input, 35173920 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     247407 packets output, 55520719 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     53 unknown protocol drops
     622169 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

-ROUTER 2-

Codice: Seleziona tutto

Serial0/0/0 is up, line protocol is up
  Hardware is GT96K Serial
  MTU 1500 bytes, BW 2048 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 27/255, rxload 26/255
  Encapsulation FRAME-RELAY IETF, loopback not set
  Keepalive set (10 sec)
  CRC checking enabled
  LMI enq sent  75, LMI stat recvd 75, LMI upd recvd 0, DTE LMI up
  LMI enq recvd 0, LMI stat sent  0, LMI upd sent  0
  LMI DLCI 0  LMI type is ANSI Annex D  frame relay DTE  segmentation inactive
  FR SVC disabled, LAPF state down
  Broadcast queue 0/64, broadcasts sent/dropped 325/0, interface broadcasts 325
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 00:12:31
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 215000 bits/sec, 165 packets/sec
  30 second output rate 219000 bits/sec, 166 packets/sec
     202508 packets input, 24743455 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     205006 packets output, 26899811 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     18 unknown protocol drops
     481689 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

I 2 router sono collegati alla rete del provider da una Frame Relay su Ponte Radio.
Ho diversi DLCI configurati su quelle seriali, uno dei quali connette il ROUTER1 al ROUTER2, come faccio a sapere se eventualmente i protocol error sono relativi solo ad un DLCI?

Grazie
Rizio

[Rizio]

Mettendo in debug l'interfaccia vedo solo passare questi:

Codice: Seleziona tutto

Dec 19 11:24:45.387: Serial0/0/0(out): StEnq, myseq 159, yourseen 106, DTE up
Dec 19 11:24:45.391: Serial0/0/0(in): Status, myseq 159, pak size 14

ongi 10 secondi che immagino siano i keep alive lmi, mi confermate l'ipotesi o c'è qualcosa di strano?

Qual'è il debug migliore per verificare i protocol drop?

Grazie
Rizio

[Rizio]

Ho cercato un pò in giro e gli unknown protocol dicono siano imputabili al CDP o altri protocolli non riconosciuti dal router (anche solo perchè non sono abilitati), però, anche dopo aver disabilitato il CDP sulle macchine "vicine" al router che mi interessa i counter incrementano ancora.... cosa può essere?

A qualcuno viene in mente qualcosa?

Rizio