Hello,
About two weeks ago I made some small changes to my router config that adjusted the ospf link cost on two interfaces to better balance some traffic. Ever since then multiple interfaces will sporadically (several times an hour) register ignored packets and queue flushes. These ignored packets seem to be occurring at the same time on different interfaces across the router.
From what I understand these are due to SPD drops. But is there only one SPD queue, or multiple queues per interface? If theres only one SPD queue for the RP, then I guess that could explain the simultaneous errors.
Can anyone provide any tips or shed any light on whats going on here?
Thanks in advance,
~jerry
Router#sh int f1/0
FastEthernet1/0 is up, line protocol is up
Hardware is DEC21140, address is 0001.9799.0c1c (bia 0001.9799.0c1c)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 98/255, rxload 171/255
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 6d08h
Input queue: 0/256/0/14148 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 67105000 bits/sec, 9996 packets/sec
5 minute output rate 38600000 bits/sec, 15520 packets/sec
3812152843 packets input, 3518844419 bytes
Received 458 broadcasts, 0 runts, 0 giants, 45 throttles
672121 input errors, 0 CRC, 0 frame, 0 overrun, 644384 ignored
0 watchdog
0 input packets with dribble condition detected
1341997684 packets output, 2254340484 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
Router#sh int f1/0 switching
FastEthernet1/0
Throttle count 45
Drops RP 0 SP 0
SPD Flushes Fast 14148 SSE 0
SPD Aggress Fast 5878
SPD Priority Inputs 364738 Drops 0
Protocol IP
Switching path Pkts In Chars In Pkts Out Chars Out
Process 1562854 464514691 894021 60224151
Cache misses 0 - - -
Fast 3818204887 591790070 1352576135 1524795816
Auton/SSE 0 0 0 0
Protocol ARP
Switching path Pkts In Chars In Pkts Out Chars Out
Process 460 27600 463 27780
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 0 0 54907 3294420
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.
Router#sh ip spd
Current mode: normal.
Queue min/max thresholds: 73/199, Headroom: 100, Extended Headroom: 75
IP normal queue: 1, priority queue: 0.
SPD special drop mode: aggressively drop bad packets
Router#sh ver
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-IS-M), Version 12.3(23), RELEASE SOFTWARE (fc5)
