From: Brown, Patrick (NSOC-OCF} (PBrown4@chartercom.com)
Date: Sat Feb 22 2003 - 01:17:40 GMT-3
This increments as part of selective packet discard It only applies to process switched traffic.
The purpose of SPD is so routing updates, keepalives, and etc are not dropped when the IP input queue is full. Normal IP packets are dropped based on a drop probability. The random drops are SPD flushes.
"show int switching" will give you more detail stats about SPD.
You also have a lot of throttles due to process switched traffic. The router temporarily disables the interface to give the interface time to catch up and process the already enqueued packets.
Tx,
Patrick
-----Original Message-----
From: Charles Huang [mailto:routing@icharles.no-ip.com]
Sent: Friday, February 21, 2003 6:05 PM
To: CCIE
Subject: Interface Flushes
Hi All,
I have 701876 flushes on show interface command. Does anyone know what
'flushes' mean? Can someone point out a link or explain in detail on what
does the counter for ? was the packet lost/dropped/forwarded ?
Thanks
Charles
FastEthernet0/1 is up, line protocol is up
Hardware is DEC21140A, address is 0001.c937.1e01 (bia 0001.c937.1e01)
Internet address is 172.20.49.18/30
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 10/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Half-duplex, 100Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:03, output hang never
Last clearing of "show interface" counters 1d02h
Input queue: 0/500/0/701876 (size/max/drops/flushes); Total output drops:
0
Queueing strategy: fifo
Output queue :0/40 (size/max)
30 second input rate 426000 bits/sec, 136 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
30785609 packets input, 2617627636 bytes
Received 30785576 broadcasts, 0 runts, 0 giants, 49 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
18559 packets output, 1295812 bytes, 0 underruns
0 output errors, 38 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
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