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Packet discards on tunnel interface

Hi everyone,

I have a router ISR 4331 on which I have created a tunnel interface and loopback interface as a source interface of tunnel connected with my remote site. Recently I have started seeing packet discards on my tunnel interface. My MPLS provider is giving 75 MB link on both side of my offices. Kindly find below output results of tunnel interface if anything is missconfigured.

RT01#show interfaces Gi0/0/2.1201

GigabitEthernet0/0/2.1201 is up, line protocol is up

  Hardware is ISR4331-3x1GE, address is

  Description: *** PRI Link  ***

  Internet address is

  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation 802.1Q Virtual LAN, Vlan ID  1201.

  ARP type: ARPA, ARP Timeout 04:00:00

  Keepalive not supported

  Last clearing of "show interface" counters never





RT01#show interfaces tunnel 150

Tunnel150 is up, line protocol is up

  Hardware is Tunnel

  Internet address is

  MTU 9976 bytes, BW 100 Kbit/sec, DLY 50000 usec,

     reliability 255/255, txload 255/255, rxload 255/255

  Encapsulation TUNNEL, loopback not set

  Keepalive set (10 sec), retries 30

  Tunnel linestate evaluation up

  Tunnel source, destination

  Tunnel protocol/transport GRE/IP

    Key disabled, sequencing disabled

    Checksumming of packets disabled

  Tunnel TTL 255, Fast tunneling enabled

  Tunnel transport MTU 1476 bytes

  Tunnel transmit bandwidth 8000 (kbps)

  Tunnel receive bandwidth 8000 (kbps)

  Last input never, output never, output hang never

  Last clearing of "show interface" counters 8w5d

  Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 9252882

  Queueing strategy: fifo

  Output queue: 0/0 (size/max)

  5 minute input rate 2013000 bits/sec, 375 packets/sec

  5 minute output rate 2294000 bits/sec, 369 packets/sec

     688153682 packets input, 487757675447 bytes, 0 no buffer

     Received 0 broadcasts (0 IP multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     674136197 packets output, 569157823426 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 unknown protocol drops

     0 output buffer failures, 0 output buffers swapped out