From: David Duncon (david_ccie@hotmail.com)
Date: Tue Aug 03 2004 - 10:18:25 GMT-3
Hi Group,
One of our multi vlan Spoke router is displaying unusually large number of
*ignored packets*. There are two things happening here, in the absence of a
L3 switch, we are using this router as a Router on a Stick config and making
this Router to do the job of intervlan routing as well. Secondly this site
do have some historical cabling issues and at some stage my syslog box used
to get bombarded by *late collisions* errors from Router's Ethernet int. But
since we replaced the longer Cat 6 fly lead to with a shorter one,
understandably the late collisions have disappeared.
But lately we are running in to this sort of large number of "ignored
packets".
Can any one drill further on this aspect and advise me on the following.
- What are the likely causes?
- How can I eliminate them ?
- What number is acceptable/expected ?
Router1#sh int fa0/0
FastEthernet0/0 is up, line protocol is up
Hardware is AmdFE, address is 000b.beae.ac00 (bia 000b.beae.ac00)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
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 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 09:09:40
Input queue: 0/75/147/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 82000 bits/sec, 131 packets/sec
30 second output rate 284000 bits/sec, 267 packets/sec
11182341 packets input, 2002862830 bytes
Received 566627 broadcasts, 0 runts, 0 giants, 0 throttles
42680467 input errors, 0 CRC, 0 frame, 0 overrun, 42680467 ignored
????????????????????
0 watchdog
0 input packets with dribble condition detected
14471291 packets output, 3377013099 bytes, 0 underruns
0 output errors, 0 collisions, 5 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Thanks,
David.
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