[c-nsp] Router 7500 internal buffers Errors

[Alexandra Alvarado]

Hello,


When I put the "show interface gigabitethernet 0/0/0" output command in the
Cisco Output Interpreter I get the next message:

"WARNING: 59753 packets have been 'ignored' by the interface because the
interface hardware ran low on internal buffers"

But when I put the 'show buffers' command output I get: No Significant
Errors to report.

Today I had to reload the router because the network went down, how I can
solve the problem?

Do I need to apply Buffer Tuning?

Thanks

Alexandra Alvarado


# show interfaces GigabitEthernet 0/0/0
GigabitEthernet0/0/0 is up, line protocol is up 
  Hardware is cyBus GigabitEthernet Interface, address is 0002.7eae.5000
(bia 0002.7eae.5000)
  Description: VLAN2_Gye
  Internet address is 10.201.12.243/29
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, 
     reliability 255/255, txload 11/255, rxload 33/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, link type is autonegotiation, media type is SX
  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 01:16:28
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 13
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 130694000 bits/sec, 26914 packets/sec
  30 second output rate 43999000 bits/sec, 22908 packets/sec
     130060243 packets input, 300056432 bytes, 0 no buffer
     Received 3298 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 1994 overrun, 59753 ignored
     0 watchdog, 2111 multicast, 0 pause input
     0 input packets with dribble condition detected
     113173132 packets output, 2723023159 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     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

# show buffers
Buffer elements:
     498 in free list (500 max allowed)
     1460835 hits, 0 misses, 0 created

Public buffer pools:
Small buffers, 104 bytes (total 960, permanent 960):
     934 in free list (20 min, 2000 max allowed)
     1446638 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Middle buffers, 600 bytes (total 720, permanent 720):
     718 in free list (20 min, 1600 max allowed)
     267618 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Big buffers, 1536 bytes (total 720, permanent 720):
     720 in free list (10 min, 2400 max allowed)
     2967028 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
VeryBig buffers, 4520 bytes (total 80, permanent 80):
     80 in free list (5 min, 2400 max allowed)
     0 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Large buffers, 5024 bytes (total 80, permanent 80):
     80 in free list (3 min, 240 max allowed)
     0 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
Huge buffers, 18024 bytes (total 5, permanent 0, peak 5 @ 04:14:00):
     4 in free list (3 min, 104 max allowed)
     0 hits, 1 misses, 2 trims, 7 created
     0 failures (0 no memory)

Interface buffer pools:
IPC buffers, 4096 bytes (total 624, permanent 624):
     624 in free list (208 min, 2080 max allowed)
     3015708 hits, 0 fallbacks, 0 trims, 0 created
     0 failures (0 no memory)