I have a router connected to a provider via POS and once we commissioned the link we are receiving the following logs
010091: .May 7 06:58:34.353 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface POSx/x/x, changed state to down
010092: .May 7 06:59:04.320 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface POSx/x/x, changed state to up
010093: .May 7 06:59:12.317 UTC: %ASR1000_RP_SONET_ALARM-6-SONET: ASSERT CRITICAL POSx/x/x Threshold Cross Alarm - B3
010094: .May 7 06:59:12.317 UTC: %SONET-4-ALARM: SIP0/1: POS0/1/0: B3 BER exceeds threshold, TC alert declared
The actual interface is configured as below.
interface POSXXX
no ip address
no ip redirects
no ip unreachables
encapsulation frame-relay IETF
load-interval 30
crc 32
pos framing sdh
pos scramble-atm
frame-relay lmi-type ansi
***** Show int pos xxx
POS0/1/0 is up, line protocol is up
Hardware is SPA-1XOC12-POS
MTU 4470 bytes, BW 622000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 4/255
Encapsulation FRAME-RELAY IETF, crc 32, loopback not set
Keepalive set (10 sec)
Scramble enabled
LMI enq sent 91221, LMI stat recvd 91208, 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 0/256, broadcasts sent/dropped 0/0, interface broadcasts 0
Last input 00:00:04, output 00:00:04, output hang never
Last clearing of "show interface" counters 1w3d
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 371
Queueing strategy: Class-based queueing
Output queue: 0/40 (size/max)
30 second input rate 11701000 bits/sec, 2647 packets/sec
30 second output rate 3219000 bits/sec, 2218 packets/sec
2040309131 packets input, 818819296771 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
968195 runts, 23 giants, 0 throttles
0 parity
1008516 input errors, 38377 CRC, 0 frame, 0 overrun, 0 ignored, 1921 abort
1891991396 packets output, 204838782601 bytes, 0 underruns
0 output errors, 0 applique, 0 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
*********************************************************************************************************************************************************
sh controllers pos 0/1/0
POS0/1/0
SECTION
LOF = 0 LOS = 0 BIP(B1) = 0
LINE
AIS = 0 RDI = 0 FEBE = 0 BIP(B2) = 0
PATH
AIS = 73 RDI = 127 FEBE = 33793 BIP(B3) = 295900
PLM = 1 UNEQ = 0 TIM = 0 TIU = 0
LOP = 0 NEWPTR = 408 PSE = 0 NSE = 19794119
Active Defects: None
Active Alarms: None
Alarm reporting enabled for: SF SLOS SLOF B1-TCA B2-TCA PLOP B3-TCA
Framing: SDH
APS
COAPS = 0 PSBF = 0
State: PSBF_state = False
Rx(K1/K2): 00/00 Tx(K1/K2): 00/00
Rx Synchronization Status S1 = 02
S1S0 = 02, C2 = 16
Remote aps status (none); Reflected local aps status (none)
CLOCK RECOVERY
RDOOL = 0
State: RDOOL_state = False
PATH TRACE BUFFER: STABLE
Remote hostname : v^O7kxft^Em^YNw|N^Dbue|w^VkH3^Qz^Q3j^W^F~^R
\^\D5w'
^K6^C^F^Lc^TV^DqSs^m7D^]!5
?
Remote interface: ^Qz^Q3j^W^F~^R
\^\D5w'
^K6^C^F^Lc^TV^DqSs^m7D^]!5
?
Remote IP addr : w'
^K6^C^F^Lc^TV^DqSs^m7D^]!5
?
Remote Rx(K1/K2):m/7D Tx(K1/K2): ^]!/5
BER thresholds: SF = 10e-3 SD = 10e-6
TCA thresholds: B1 = 10e-6 B2 = 10e-6 B3 = 10e-6
Clock source: line
Question : what can be the following causes ? Is it the router POS interface which is creating in payload corruption ?
