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NMS says HighDiscardRate on an interface (I don't see an issue on the router)

My NMS (SMARTS) shows the following active alarm. I don't see any indication of a problem on the router but maybe I'm not using the right commands to see the problem.

Can someone help me understand this?

 

Alarm:

IF-*my router* /3 [Gi0/1]
HighDiscardRate
Interface_Performance_MIB2

 

Model and IOS

2951

c2951-universalk9-mz.SPA.151-4.M2.bin

 

CLI:

my router#sh int g0/1
GigabitEthernet0/1 is up, line protocol is up
  Hardware is PQ3_TSEC, address is 5057.a8ca.0131 (bia 5057.a8ca.0131)
  Description: to a 3560
  MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation 802.1Q Virtual LAN, Vlan ID  1., loopback not set
  Keepalive set (10 sec)
  Full Duplex, 10Mbps, media type is RJ45
  output flow-control is unsupported, input flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 23:50:01
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: Class-based queueing
  Output queue: 0/1000/0 (size/max total/drops)
  30 second input rate 1000 bits/sec, 1 packets/sec
  30 second output rate 1000 bits/sec, 1 packets/sec
     110395 packets input, 26697272 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 watchdog, 0 multicast, 0 pause input
     92573 packets output, 21760527 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

 

my router#sh controllers g0/1 | sec Internal Driver
Internal Driver Information:
 throttled=0, enabled=0, disabled=0
 rx_coalesce_failed=0, rx_framing_err=0, rx_overflow_err=0, rx_buffer_err=0
 rx_no_enp=0, rx_discard=0
 tx_one_col_err=0, tx_more_col_err=0, tx_no_enp=0, tx_deferred_err=0
 tx_underrun_err=0, tx_late_collision_err=0, tx_loss_carrier_err=0
 tx_exc_collision_err=0, tx_buff_err=0, fatal_tx_err=0

 

 

 

 

 

 

 

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Re: NMS says HighDiscardRate on an interface (I don't see an issue on the router)

Discards almost always indicate bandwidth issue. But there is almost no traffic running through that interface.

 

Any event log messages being generated by the switch. To see if its just a temporary high discards?

 

 

 

Re: NMS says HighDiscardRate on an interface (I don't see an issue on the router)

 

This router handles management only. That's why the traffic level is low. There are no messages from the connected switch.

This has been active in my NMS for two weeks.

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