[c-nsp] Throttles on an interface

[Roy]

Data below.  The machine has two fast E interfaces active (Fa0/0 and Fa
6/0) plus a few T1s.

Roy

Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-IK9S-M), Version 12.2(15)T5,  RELEASE
SOFTWARE (fc1)
Image text-base: 0x60008954, data-base: 0x61DE0000

ROM: System Bootstrap, Version 12.1(20000710:044039) [nlaw-121E_npeb
117], DEVELOPMENT SOFTWARE
BOOTLDR: 7200 Software (C7200-BOOT-M), Version 12.0(23)S1, EARLY
DEPLOYMENT RELEASE SOFTWARE (fc1)

mushroom uptime is 15 weeks, 4 days, 7 hours, 16 minutes
System returned to ROM by reload at 00:47:30 PDT Sun Jun 8 2008
System restarted at 00:49:23 PDT Sun Jun 8 2008
System image file is "disk1:c7200-ik9s-mz.122-15.T5"
Last reload reason: Reload Command

cisco 7206VXR (NPE400) processor (revision A) with 491520K/32768K bytes
of memory.
Processor board ID 16067072
R7000 CPU at 350Mhz, Implementation 39, Rev 3.2, 256KB L2, 4096KB L3 Cache
6 slot VXR midplane, Version 2.0

Last reset from power-on
Bridging software.
X.25 software, Version 3.0.0.
Primary Rate ISDN software, Version 1.1.
2 FastEthernet/IEEE 802.3 interface(s)
8 Serial network interface(s)
4 Channelized T1/PRI port(s)
125K bytes of non-volatile configuration memory.

16384K bytes of Flash PCMCIA card at slot 0 (Sector size 128K).
250880K bytes of ATA PCMCIA card at slot 1 (Sector size 512 bytes).
4096K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x2102FastEthernet6/0 is up, line protocol is up
  Hardware is DEC21140, address is 0001.6388.00a8 (bia 0001.6388.00a8)
  Internet address is 1.1.1.1/30
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 15/255, rxload 68/255
  Encapsulation 802.1Q Virtual LAN, Vlan ID  1., loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 02:00:00
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 09:26:40
  Input queue: 0/150/171/15119 (size/max/drops/flushes); Total output
drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 26780000 bits/sec, 4339 packets/sec
  5 minute output rate 6272000 bits/sec, 2042 packets/sec
     111824180 packets input, 2348806646 bytes
     Received 320815 broadcasts, 0 runts, 25 giants, 149 throttles
     40174 input errors, 0 CRC, 0 frame, 0 overrun, 40136 ignored
     0 watchdog
     0 input packets with dribble condition detected
     48129003 packets output, 2732343828 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

Rodney Dunn wrote:
> Can you post the 'sh int' and 'sh ver'?
>
> I posted a ressponse just yesterday or the day before
> about input drops can result in throttles.
>
> If it's microburst the 72xx may not can handle the
> rate.
>
> On Wed, Sep 24, 2008 at 06:46:06PM -0700, Roy wrote:
>   
>> I have a PA-FE on a 7206VXR.  "show int" gives
>>
>> Received 7798 broadcasts, 0 runts, 0 giants, 17 throttles
>>      393 input errors, 0 CRC, 0 frame, 0 overrun, 393 ignored
>>
>> The throttles seems to be related to the input errors.  I also see
>> throttles with no input errors.  We have double checked (and replaced)
>> the cable and the ports without success.  Is there some sort of buffer
>> tuning that would affect this?
>>
>> Roy
>>
>>     
>
>