Incrementing overrun input errors on interface

dhananjay95929 · ‎07-24-2013

Hello Support Community,

I am seeing incrementing "overrun" type of input errors on a FastEthernet interface on a Cisco 3845 series router. I am well aware of the fact that overrun errors MAY BE caused due to "input rate exceeding the rate at which the interface receiver hardware can write the packets to the hardware buffer" as per Cisco documentation. However, the input rate on this interface averages at around 1.5 Mbps and the output rate averages at around 500 kbps. Here's what the interface statistics look like from a monitoring perspective.

	Receive	Transmit
Interface Bandwidth	100.0 Mbps	100.0 Mbps
Current Traffic	1.503 Mbps	412.542 kbps
Percent Utilization	2 %	0 %
Packets per Second	849.0 pps	512.0 pps
Average Packet Size	221 bytes	101 bytes

The network topology is as follows:

[3845 router [Fa3/0]]------------[[Gi5/2] CAT4500 switch]

Speed and duplex on both sides of the link are set to 100 and full respectively. There are no errors on the CAT 4500 switch side of the link. I increased the hold-queue input size on the 3845 router side interface from the default 75 to 2048 in an effort to see if it stops the incrementing errors but it did not.

I am also seeing the total output drop counter rising gradually. The input errors counter rises much much faster than the output drop counter though.

sh int fa3/0

FastEthernet3/0 is up, line protocol is up

Hardware is AmdFE, address is 0013.7f72.6001 (bia 0013.7f72.6001)

Description: Int-to-Customer Network

Internet address is 10.0.1.251/24

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 254/255, txload 1/255, rxload 6/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

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 01:23:54

Input queue: 0/2048/0/0 (size/max/drops/flushes); Total output drops: 259

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 2424000 bits/sec, 906 packets/sec

5 minute output rate 450000 bits/sec, 535 packets/sec

4890108 packets input, 1761777920 bytes

Received 7578 broadcasts, 0 runts, 0 giants, 0 throttles

54709 input errors, 0 CRC, 0 frame, 54709 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

2920904 packets output, 313102254 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 output buffer failures, 0 output buffers swapped out

sh int fa3/0 accounting

FastEthernet3/0 Int-to-Customer Network

Protocol Pkts In Chars In Pkts Out Chars Out

Other 374 19822 1129 67740

IP 11394712 76208123 6874875 730544863

DEC MOP 0 0 20 1540

ARP 4962 297720 7 420

sh int fa3/0 switching

FastEthernet3/0 Int-to-Customer Network

Throttle count 0

Drops RP 18 SP 0

SPD Flushes Fast 66 SSE 0

SPD Aggress Fast 0

SPD Priority Inputs 56666977 Drops 0

Protocol IP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 754269402 562447667 1038407414 1891734184

Cache misses 48 - - -

Fast 985631026 3406265085 3728614892 2275699977

Auton/SSE 0 0 0 0

Protocol DEC MOP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 0 0 69246 5331942

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

Protocol ARP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 13539896 812393760 23224 1393440

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

Protocol Other

Switching path Pkts In Chars In Pkts Out Chars Out

Process 1387770 73551810 4163782 249826920

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

NOTE: all counts are cumulative and reset only after a reload.

Can anyone predict what may be causing these high number input errors and point me in the right direction? I can provide more information on the interface statistics and any other router related configuration if required.

Thanks.

Leo Laohoo · ‎07-24-2013

reliability 254/255

I think you got a cable issue. This value should ALWAYS bee 255/255 and should never go down.

dhananjay95929 · ‎07-24-2013

You have a point there regarding the cable and I will definitely look into replacing it, but....

Isn't Reliability value dropping an effect of the high number input errors and not a cause?

Reliability = total errors / total frames.

I got the below from a cisco support forum post -

"Reliability is generally used to identify whether we successfully transmit or receive a packet and it is expressed as a fraction of 255. It is calculated by summing all the packets received and transmitted and dividing that number into the sum of all input and ouput errors and expressing that as a fraction of 255. It is then exponentially weighted over five minutes so that the most current reading has greater weight than the first reading. Basic definition of reliability is errors/total frames. If your interface reads 255/255, then it means all is well."

Thanks.

dhananjay95929 · ‎07-24-2013

Here's an output of show controller for that particular interface, do you think it indicates an issue with the cable itself?

show controller fa3/0

Interface FastEthernet3/0

Hardware is AMD Am79c971

ADDR: C00B0968, FASTSEND: 6023D370, MCI_INDEX: 0

DIST ROUTE ENABLED: 0

Route Cache Flag: 613

LADRF=0x0000 0x0100 0x2001 0x0002

CSR0 =0x00000072, CSR3 =0x00001044, CSR4 =0x00004B1D, CSR15 =0x00008180

CSR80 =0x00009900, CSR114=0x00000000, CRDA =0x2E0C36E0, CXDA =0x2E0C3E10

BCR9 =0x00000001 (full-duplex)

CSR5 =0x00000001, CSR7 =0x00000820, CSR100=0x0000F000, CSR125=0x00005C3C

BCR2 =0x00000000, BCR9 =0x00000001, BCR18 =0x000019E0, BCR22 =0x0000FF06

BCR25 =0x000000FF, BCR26 =0x00000080, BCR27 =0x00000010, BCR32 =0x00004480

HW filtering information:

Promiscuous Mode Enabled, PHY Addr Enabled, Broadcast Addr Enabled

PHY Addr=0013.7F72.6001, Multicast Filter=0x0000 0x0100 0x2001 0x0002

amdp2_instance=0x70285F70, registers=0x4C100000, ib=0x2D75B9C0

rx ring entries=64, tx ring entries=128

rxring=0x2E0C3540, rxr shadow=0x66CA4F50, rx_head=26, rx_tail=0

txring=0x2E0C3980, txr shadow=0xC00B1760, tx_head=73, tx_tail=73, tx_count=0

Software MAC address filter(hash:length/addr/mask/hits):

0x00: 0 ffff.ffff.ffff 0000.0000.0000 13524414

0x0F: 0 0000.0c07.ac03 0000.0000.0000 1313180569

0x5C: 0 0100.5e00.0002 0000.0000.0000 43124342

0x7E: 0 0013.7f72.6001 0000.0000.0000 389537278

0xC0: 0 0180.c200.0002 0000.0000.0000 0

0xC0: 1 0100.0ccc.cccc 0000.0000.0000 1387845

0xC5: 0 0180.c200.0007 0000.0000.0000 0

spurious_idon=0, filtered_pak=31187921, throttled=0, enabled=0, disabled=0

rx_framing_err=0, rx_overflow_err=0, rx_buffer_err=0

rx_bpe_err=0, rx_soft_overflow_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

hsrp_conf=1, need_af_check=1

tx_limited=0(64)

PHY registers:

Register 0x00: 2100 780D 7810 0003 0101 0000 0000 0000

Register 0x08: 0000 0000 0000 0000 0000 0000 0000 0000

Register 0x10: 0000 0000 4000 0000 38C8 0010 0000 0002

Register 0x18: 0001 0000 0000 0000 0000

Thanks.

karinatan · ‎04-29-2016

dhananjay95929,

I am having the same problem with a number of 2901 routers. Did you manage to resolve the issue in the end? Any solutions please suggest.

Thanks

Leo Laohoo · ‎07-24-2013

Isn't Reliability value dropping an effect of the high number input errors and not a cause?

No. Reliability is saying "How reliable is my layer 1".

do you think it indicates an issue with the cable itself?

Change the entire length of the cable OR run a full TDR test.

dhananjay95929 · ‎08-26-2013

Replaced the cable and still see the incrementing errors.

Leo Laohoo · ‎08-26-2013

Post the same commands as before, plus include "sh counter interface Fast 3/0".

dhananjay95929 · ‎08-29-2013

sh int Fa3/0

FastEthernet3/0 is up, line protocol is up

Hardware is AmdFE, address is 0013.7f72.6001 (bia 0013.7f72.6001)

Description: Int-to-Customer Network

Internet address is x.x.x.x/24

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 253/255, txload 2/255, rxload 18/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

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 06:54:37

Input queue: 0/2048/0/0 (size/max/drops/flushes); Total output drops: 1534

Queueing strategy: fifo

Output queue: 0/40 (size/max)

30 second input rate 7211000 bits/sec, 1435 packets/sec

30 second output rate 821000 bits/sec, 889 packets/sec

31915418 packets input, 2934180951 bytes

Received 37501 broadcasts, 0 runts, 0 giants, 0 throttles

222060 input errors, 0 CRC, 0 frame, 222060 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

21232362 packets output, 2579907005 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 output buffer failures, 0 output buffers swapped out

sh controller fa3/0

Interface FastEthernet3/0

Hardware is AMD Am79c971

ADDR: C00B0968, FASTSEND: 6023D370, MCI_INDEX: 0

DIST ROUTE ENABLED: 0

Route Cache Flag: 613

LADRF=0x0000 0x0100 0x2001 0x0002

CSR0 =0x00000072, CSR3 =0x00001044, CSR4 =0x00004B1D, CSR15 =0x00008180

CSR80 =0x00009900, CSR114=0x00000000, CRDA =0x2E0C3570, CXDA =0x2E0C3BE0

BCR9 =0x00000001 (full-duplex)

CSR5 =0x00000001, CSR7 =0x00000820, CSR100=0x0000F000, CSR125=0x00005C3C

BCR2 =0x00000000, BCR9 =0x00000001, BCR18 =0x000019E0, BCR22 =0x0000FF06

BCR25 =0x000000FF, BCR26 =0x00000080, BCR27 =0x00000010, BCR32 =0x00004480

HW filtering information:

Promiscuous Mode Enabled, PHY Addr Enabled, Broadcast Addr Enabled

PHY Addr=0013.7F72.6001, Multicast Filter=0x0000 0x0100 0x2001 0x0002

amdp2_instance=0x70285F70, registers=0x4C100000, ib=0x2D75B9C0

rx ring entries=64, tx ring entries=128

rxring=0x2E0C3540, rxr shadow=0x66CA4F50, rx_head=3, rx_tail=0

txring=0x2E0C3980, txr shadow=0xC00B1760, tx_head=38, tx_tail=38, tx_count=0

Software MAC address filter(hash:length/addr/mask/hits):

0x00: 0 ffff.ffff.ffff 0000.0000.0000 277131

0x0F: 0 0000.0c07.ac03 0000.0000.0000 838686427

0x5C: 0 0100.5e00.0002 0000.0000.0000 681009

0x7E: 0 0013.7f72.6001 0000.0000.0000 10086656

0xC0: 0 0180.c200.0002 0000.0000.0000 0

0xC0: 1 0100.0ccc.cccc 0000.0000.0000 21918

0xC5: 0 0180.c200.0007 0000.0000.0000 0

spurious_idon=0, filtered_pak=33483715, throttled=0, enabled=0, disabled=0

rx_framing_err=0, rx_overflow_err=0, rx_buffer_err=0

rx_bpe_err=0, rx_soft_overflow_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=1, tx_late_collision_err=0, tx_loss_carrier_err=0

tx_exc_collision_err=0, tx_buff_err=0, fatal_tx_err=0

hsrp_conf=1, need_af_check=1

tx_limited=0(64)

PHY registers:

Register 0x00: 2100 780D 7810 0003 0101 0000 0000 0000

Register 0x08: 0000 0000 0000 0000 0000 0000 0000 0000

Register 0x10: 0000 0000 4000 0000 38C8 0010 0000 0002

Register 0x18: 0001 0000 0000 0000 0000

sh int fa3/0 accounting

FastEthernet3/0 Int-to-Customer Network

Protocol Pkts In Chars In Pkts Out Chars Out

Other 302 16006 907 54420

IP 8997487 2398365672 6249085 949233080

DEC MOP 0 0 15 1155

ARP 3981 238860 1 60

sh int fa3/0 switching

FastEthernet3/0 Int-to-Customer Network

Throttle count 0

Drops RP 123 SP 0

SPD Flushes Fast 74 SSE 0

SPD Aggress Fast 0

SPD Priority Inputs 61174368 Drops 0

Protocol IP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 827218827 2329207405 1136910030 2216013801

Cache misses 48 - - -

Fast 508035336 28232545 1619944066 3467603049

Auton/SSE 0 0 0 0

Protocol DEC MOP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 0 0 74403 5729031

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

Protocol ARP

Switching path Pkts In Chars In Pkts Out Chars Out

Process 14838705 890322300 24881 1492860

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

Protocol Other

Switching path Pkts In Chars In Pkts Out Chars Out

Process 1491007 79023371 4473800 268428000

Cache misses 0 - - -

Fast 0 0 0 0

Auton/SSE 0 0 0 0

NOTE: all counts are cumulative and reset only after a reload.

sh int fa3/0 stats

FastEthernet3/0

Switching path Pkts In Chars In Pkts Out Chars Out

Processor 302885 25285101 411720 55758990

Route cache 9293267 2909400397 6183285 924543723

Total 9596152 2934685498 6595005 980302713

sh int fa3/0 summary

*: interface is up

IHQ: pkts in input hold queue IQD: pkts dropped from input queue

OHQ: pkts in output hold queue OQD: pkts dropped from output queue

RXBS: rx rate (bits/sec) RXPS: rx rate (pkts/sec)

TXBS: tx rate (bits/sec) TXPS: tx rate (pkts/sec)

TRTL: throttle count

Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL

------------------------------------------------------------------------

* FastEthernet3/0 0 0 0 136 7578000 1438 739000 867 0

Leo Laohoo · ‎08-29-2013

reliability 253/255, txload 2/255, rxload 18/255

Nope. Still faulty cable.

dhananjay95929 · ‎09-05-2013

Ok, I failed over to the secondary router and made it the primary now. Replaced the cable 3 times. Moved the other end of the cable from the CAT 4500 switch number 1 to CAT 4500 switch number 2 on a different blade. Changed both ends of the connection (CAT and router) speed and duplex to auto / auto. There are no errors on the CAT switch end. The IOS on the routers is 12.4(15)T1.

Still see the same input errors. As you said though the reliabilty is 255/255 now.

sh int fa3/0

FastEthernet3/0 is up, line protocol is up

Hardware is AmdFE, address is x.x.x (bia x:x:x)

Description: Int-to-Customer Network

Internet address is x.x.x.x/24

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 15/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

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 12:16:43

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 446

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 6215000 bits/sec, 1163 packets/sec

5 minute output rate 647000 bits/sec, 759 packets/sec

64960035 packets input, 302868023 bytes

Received 65287 broadcasts, 0 runts, 0 giants, 0 throttles

20316 input errors, 0 CRC, 0 frame, 20316 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

40228479 packets output, 4289802996 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 output buffer failures, 0 output buffers swapped out

sh controller fa3/0

Interface FastEthernet3/0

Hardware is AMD Am79c971

ADDR: 66F34824, FASTSEND: 6023D370, MCI_INDEX: 0

DIST ROUTE ENABLED: 0

Route Cache Flag: 613

LADRF=0x0000 0x0100 0x2001 0x0002

CSR0 =0x00000072, CSR3 =0x00001044, CSR4 =0x00004B1D, CSR15 =0x00008180

CSR80 =0x00009900, CSR114=0x00000000, CRDA =0x2E0C3740, CXDA =0x2E0C3D50

BCR9 =0x00000001

CSR5 =0x00000001, CSR7 =0x00000820, CSR100=0x0000F000, CSR125=0x00005C3C

BCR2 =0x00000000, BCR9 =0x00000001, BCR18 =0x000019E0, BCR22 =0x0000FF06

BCR25 =0x000000FF, BCR26 =0x00000080, BCR27 =0x00000010, BCR32 =0x00004480

HW filtering information:

Promiscuous Mode Enabled, PHY Addr Enabled, Broadcast Addr Enabled

PHY Addr=001D.7038.6421, Multicast Filter=0x0000 0x0100 0x2001 0x0002

amdp2_instance=0x66F358CC, registers=0x4C100000, ib=0x2D75B9C0

rx ring entries=64, tx ring entries=128

rxring=0x2E0C3540, rxr shadow=0x66F35EB8, rx_head=32, rx_tail=0

txring=0x2E0C3980, txr shadow=0x66F35FEC, tx_head=61, tx_tail=61, tx_count=0

Software MAC address filter(hash:length/addr/mask/hits):

0x00: 0 ffff.ffff.ffff 0000.0000.0000 18312

0x0F: 0 0000.0c07.ac03 0000.0000.0000 65147725

0x51: 0 001d.7038.6421 0000.0000.0000 459815

0x5C: 0 0100.5e00.0002 0000.0000.0000 46458

0xC0: 0 0180.c200.0002 0000.0000.0000 0

0xC0: 1 0100.0ccc.cccc 0000.0000.0000 1494

0xC5: 0 0180.c200.0007 0000.0000.0000 0

spurious_idon=0, filtered_pak=35497, throttled=0, enabled=0, disabled=0

rx_framing_err=0, rx_overflow_err=0, rx_buffer_err=0

rx_bpe_err=0, rx_soft_overflow_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

hsrp_conf=1, need_af_check=1

tx_limited=0(64)

PHY registers:

Register 0x00: 1000 782D 7810 0003 01E1 CDE1 000B 0000

Register 0x08: 0000 0000 0000 0000 0000 0000 0000 0000

Register 0x10: 0000 0000 4000 0000 38C8 0010 0000 0002

Register 0x18: 0001 0000 0000 0000 0000

dhananjay95929 · ‎09-05-2013

I am also investigating buffer issues because I am seeing a lot of misses. Here's the output.

show buffers

Buffer elements:

1115 in free list (1119 max allowed)

60723871 hits, 0 misses, 619 created

Public buffer pools:

Small buffers, 104 bytes (total 148, permanent 50, peak 240 @ 07:14:29):

112 in free list (20 min, 150 max allowed)

43720721 hits, 11417 misses, 4403 trims, 4501 created

4638 failures (0 no memory)

Middle buffers, 600 bytes (total 27, permanent 25, peak 97 @ 2w0d):

25 in free list (10 min, 150 max allowed)

22696413 hits, 4115 misses, 2035 trims, 2037 created

3099 failures (0 no memory)

Big buffers, 1536 bytes (total 53, permanent 50, peak 53 @ 2w0d):

52 in free list (5 min, 150 max allowed)

20854107 hits, 2970 misses, 1235 trims, 1238 created

2462 failures (0 no memory)

VeryBig buffers, 4520 bytes (total 4, permanent 10, peak 203 @ 1d22h):

3 in free list (0 min, 100 max allowed)

43437529 hits, 2446 misses, 744 trims, 738 created

2094 failures (0 no memory)

Large buffers, 5024 bytes (total 1, permanent 0, peak 3 @ 1w1d):

1 in free list (0 min, 10 max allowed)

42 hits, 2052 misses, 150 trims, 151 created

2052 failures (0 no memory)

Huge buffers, 18024 bytes (total 1, permanent 0, peak 3 @ 1w1d):

1 in free list (0 min, 4 max allowed)

42 hits, 2010 misses, 150 trims, 151 created

2010 failures (0 no memory)

Interface buffer pools:

Syslog ED Pool buffers, 600 bytes (total 150, permanent 150):

118 in free list (150 min, 150 max allowed)

39086 hits, 0 misses

CD2430 I/O buffers, 1536 bytes (total 0, permanent 0):

0 in free list (0 min, 0 max allowed)

0 hits, 0 fallbacks

IPC buffers, 4096 bytes (total 2, permanent 2):

2 in free list (1 min, 8 max allowed)

0 hits, 0 fallbacks, 0 trims, 0 created

0 failures (0 no memory)

Header pools:

Header buffers, 0 bytes (total 768, permanent 768):

256 in free list (128 min, 1024 max allowed)

512 hits, 0 misses, 0 trims, 0 created

0 failures (0 no memory)

512 max cache size, 512 in cache

63835 hits in cache, 0 misses in cache

Particle Clones:

1024 clones, 4 hits, 0 misses

Public particle pools:

F/S buffers, 256 bytes (total 768, permanent 768):

256 in free list (128 min, 1024 max allowed)

512 hits, 0 misses, 0 trims, 0 created

0 failures (0 no memory)

512 max cache size, 512 in cache

4 hits in cache, 0 misses in cache

CRYPTO_HW buffers, 1548 bytes (total 1536, permanent 1536):

0 in free list (0 min, 1536 max allowed)

1536 hits, 0 misses

1536 max cache size, 1024 in cache

512 hits in cache, 0 misses in cache

Normal buffers, 1676 bytes (total 3840, permanent 3840):

3840 in free list (128 min, 4096 max allowed)

676 hits, 0 misses, 0 trims, 0 created

0 failures (0 no memory)

Private particle pools:

IDS SM buffers, 240 bytes (total 128, permanent 128):

0 in free list (0 min, 128 max allowed)

128 hits, 0 fallbacks

128 max cache size, 128 in cache

0 hits in cache, 0 misses in cache

AIM-VPN/HPII-PLUS buffers, 544 bytes (total 768, permanent 768):

0 in free list (0 min, 768 max allowed)

768 hits, 676 fallbacks

768 max cache size, 256 in cache

219478220 hits in cache, 676 misses in cache

FastEthernet3/0 buffers, 1548 bytes (total 192, permanent 192):

0 in free list (0 min, 192 max allowed)

192 hits, 0 fallbacks

192 max cache size, 128 in cache

95580571 hits in cache, 0 misses in cache

FastEthernet3/1 buffers, 1548 bytes (total 192, permanent 192):

0 in free list (0 min, 192 max allowed)

192 hits, 0 fallbacks

192 max cache size, 128 in cache

3235854 hits in cache, 0 misses in cache

FastEthernet4/0 buffers, 1548 bytes (total 192, permanent 192):

0 in free list (0 min, 192 max allowed)

192 hits, 0 fallbacks

192 max cache size, 128 in cache

5678829 hits in cache, 0 misses in cache

FastEthernet4/1 buffers, 1548 bytes (total 192, permanent 192):

0 in free list (0 min, 192 max allowed)

192 hits, 0 fallbacks

192 max cache size, 128 in cache

10353498 hits in cache, 0 misses in cache

GigabitEthernet0/0 buffers, 1664 bytes (total 768, permanent 768):

0 in free list (0 min, 768 max allowed)

768 hits, 0 fallbacks

768 max cache size, 512 in cache

64302736 hits in cache, 0 misses in cache

14 buffer threshold, 0 threshold transitions

GigabitEthernet0/1 buffers, 1664 bytes (total 768, permanent 768):

0 in free list (0 min, 768 max allowed)

768 hits, 0 fallbacks

768 max cache size, 512 in cache

1790387 hits in cache, 0 misses in cache

14 buffer threshold, 0 threshold transitions

paolo bevilacqua · ‎09-05-2013

Leo Laohoo wrote:

reliability 253/255, txload 2/255, rxload 18/255

Nope. Still faulty cable.

Actually that is not due to faulty cabling.

Router counts overruns as errors, even if they are valid packets on the wire.

And any error decreases reliability

paolo bevilacqua · ‎09-05-2013

Update IOS.