[c-nsp] Incrementing input errors and ignored counters on POS OC48interface

[Aaron Daubman]

Hi Oli,

> you don't seem to receive a single valid packet ("Last input 1d03h"),
> all of them are dropped, right? can you check "exec slot 0 show
> controller event" why they are dropped? Can you check the ixia and the
> ONS setup and make sure you receive valid packets?
> What type of LC engine are you using?

Thanks for the pointers.  I completely missed the 'Last input' timer.
Yes, it appears all packets are being dropped.

I'm including two outputs each from 'exec slot 0 show controller
events' and 'show interfaces pos0/0:1 controller' separated by about
30 min.  As you can see, there are 23,003,714 more ignored packets in
the second show int, however the controller events counters haven't
changed.

My next step will be to take the GSR out of the picture and connect an
additional OC48 on the ixia directly to the ONS to verify the
integrity of the traffic.  In the mean time, is there anything else to
look at on the GSR to help determine the cause of the ignores?

--snip--

GSR-1#exec slot 0 show controller events
========= Line Card (Slot 0) =========

Drop Counters
Packets punt to RP: 186815
HW engine punt: 142368
HW engine reject: 1271402
Rate limit HW rejects: 867719
Gen4 Packet Sanity Check (Warning): 37

RX HW Engine Reject Counters
Runt packet: 1114383
Unrecognized Protocol ID: 114919
Unrecognized L2 Frame: 42100

----------------------------------------------------------------------------------------------------------

GSR-1#show interfaces pos0/0:1 controller
POS0/0:1 is up, line protocol is up
  Hardware is Packet over SONET
  MTU 4470 bytes, BW 2488000 Kbit, DLY 100 usec, rely 255/255, load 1/255
  Encapsulation HDLC, crc 32, loopback not set
  Keepalive not set
  Scramble enabled
  Carrier delay is 0 msec
  Last input 1d23h, output 00:00:36, output hang never
  Last clearing of "show interface" counters 20:06:57
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
        Available Bandwidth 2395851 kilobits/sec
  30 second input rate 0 bits/sec, 0 packets/sec
  30 second output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
              0 parity
     724017673 input errors, 0 CRC, 0 frame, 0 overrun, 724017673
ignored, 0 abort
     1207 packets output, 423657 bytes, 0 underruns
     0 output errors, 0 applique, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions

POS0/0:1
PATH
  AIS = 0          RDI    = 0          FEBE = 0          BIP(B3) = 0
  LOP = 0          NEWPTR = 0          PSE  = 0          NSE     = 0

Active Defects: None
Active Alarms:  None
Alarm reporting enabled for: PLOP B3-TCA

  S1S0 = 00, C2 = 16
PATH TRACE BUFFER : STABLE
  Remote hostname :
  Remote interface:
  Remote IP addr  :
  Remote Rx(K1/K2):   /    Tx(K1/K2):   /

BER thresholds:  B3 = 10e-6

---snip---

GSR-1#exec slot 0 show controller events
========= Line Card (Slot 0) =========

Drop Counters
Packets punt to RP: 186815
HW engine punt: 142368
HW engine reject: 1271402
Rate limit HW rejects: 867719
Gen4 Packet Sanity Check (Warning): 37

RX HW Engine Reject Counters
Runt packet: 1114383
Unrecognized Protocol ID: 114919
Unrecognized L2 Frame: 42100

----------------------------------------------------------------------------------------------------------

GSR-1#show interfaces pos0/0:1 controller
POS0/0:1 is up, line protocol is up
  Hardware is Packet over SONET
  MTU 4470 bytes, BW 2488000 Kbit, DLY 100 usec, rely 255/255, load 1/255
  Encapsulation HDLC, crc 32, loopback not set
  Keepalive not set
  Scramble enabled
  Carrier delay is 0 msec
  Last input 2d00h, output 00:00:53, output hang never
  Last clearing of "show interface" counters 20:45:14
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
        Available Bandwidth 2395851 kilobits/sec
  30 second input rate 0 bits/sec, 0 packets/sec
  30 second output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
              0 parity
     747021387 input errors, 0 CRC, 0 frame, 0 overrun, 747021387
ignored, 0 abort
     1245 packets output, 436995 bytes, 0 underruns
     0 output errors, 0 applique, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions

POS0/0:1
PATH
  AIS = 0          RDI    = 0          FEBE = 0          BIP(B3) = 0
  LOP = 0          NEWPTR = 0          PSE  = 0          NSE     = 0

Active Defects: None
Active Alarms:  None
Alarm reporting enabled for: PLOP B3-TCA

  S1S0 = 00, C2 = 16
PATH TRACE BUFFER : STABLE
  Remote hostname :
  Remote interface:
  Remote IP addr  :
  Remote Rx(K1/K2):   /    Tx(K1/K2):   /

BER thresholds:  B3 = 10e-6
---snip---

Thanks again,
     ~Aaron