We're seeing all PVC's drop and then reappear in less than a minute on our frame-relay T3. Verizon is seeing the T3 drop also, but can't find a problem - they've tested up to the demarc, and everything appears to be fine (so they say - we've all been here before, haven't we??) Is there a way we can test the T3 interface in our 7206 to prove that the interface is or is not a part of the problem. Interface statistics appear fine, but the PVC's keep changing...very high carrier transition count looks suspect and points to Verizon.
Any comments?
Serial3/0 is up, line protocol is up
Hardware is M1T-T3+ pa
Description:
MTU 1500 bytes, BW 44210 Kbit, DLY 200 usec,
reliability 255/255, txload 5/255, rxload 2/255
Encapsulation FRAME-RELAY IETF, crc 16, loopback not set
Keepalive set (10 sec)
LMI enq sent 49821, LMI stat recvd 49768, LMI upd recvd 0, DTE LMI up
LMI enq recvd 48, LMI stat sent 0, LMI upd sent 0
LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE
FR SVC disabled, LAPF state down
Broadcast queue 0/4096, broadcasts sent/dropped 2035223/0, interface broadcasts 1802445
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 5d22h
Queueing strategy: fifo
Output queue 0/40, 12099 drops; input queue 0/75, 0 drops
5 minute input rate 496000 bits/sec, 397 packets/sec
5 minute output rate 937000 bits/sec, 355 packets/sec
70467825 packets input, 1993888542 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 332 giants, 0 throttles
0 parity
1582 input errors, 1582 CRC, 0 frame, 0 overrun, 554 ignored, 0 abort
68073515 packets output, 1811138611 bytes, 0 underruns
0 output errors, 0 applique, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
652 carrier transitions
rxLOS inactive, rxLOF inactive, rxAIS inactive
txAIS inactive, rxRAI inactive, txRAI inactive
interface Serial3/0
mtu 1500
bandwidth 44210
no ip address
encapsulation frame-relay IETF
no ip mroute-cache
framing c-bit
cablelength 400
dsu bandwidth 44210
frame-relay traffic-shaping
frame-relay lmi-type ansi
frame-relay broadcast-queue 4096 256000 2048
frame-relay qos-autosense
end
