Michael,

Please send me ifconfig wi0. Also tell me which version of dev/ic/wi.c
et cetera you are using.

Are you still seeing device timeouts?

What computer hosts the Lucent card? What AP are you using?

Packet captures taken on a wire are not as useful to me as "on-air"
captures. What I would prefer are captures taken on the sending wireless
interface and on the receiving wireless interface.

Dave

On Sat, Dec 28, 2002 at 06:32:17PM -0800, Michael Graff wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> 
> When sending large amounts of data, I get packet corruption.  This
> happens with both station firmware 8.10, 8.42.1, and 6.6.1:
> 
> wi0 at pcmcia1 function 0: Avaya Communication, Avaya Wireless PC Card, Version 01.01
> wi0: 802.11 address 00:02:2d:21:bd:93
> wi0: using Lucent Technologies, WaveLAN/IEEE
> wi0: Lucent Firmware: Station (8.42.1)
> wi0: supported rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
> 
> wi0 at pcmcia0 function 0: Lucent Technologies, WaveLAN/IEEE, Version 01.01
> wi0: 802.11 address 00:60:1d:f1:46:87
> wi0: using Lucent Technologies, WaveLAN/IEEE
> wi0: Lucent Firmware: Station (6.6.1)
> wi0: supported rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
> 
> 
> Here's a tcpdump, taken on the outgoing router (on the other side of
> the wireless hub) -- a trace made on a linux box using wireless, it
> sees the same corruption.  Note that the linux machine can transmit
> large files just fine.
> 
> - --Michael
> 
> 18:26:20.943602 10.42.93.250.49240 > 204.152.184.79.80: . [tcp sum ok] 472:472(0) ack 1288247 win 15773 <nop,nop,timestamp 36 35> (DF) (ttl 64, id 32719, len 52)
> 18:26:27.691654 10.42.93.250.49240 > 204.152.184.79.80: P [tcp sum ok] 472:994(522) ack 1288247 win 16384 <nop,nop,timestamp 50 35> (DF) (ttl 64, id 32773, len 574)
> 18:26:27.924758 204.152.184.79.80 > 10.42.93.250.49240: . [tcp sum ok] 1288247:1288247(0) ack 994 win 17520 <nop,nop,timestamp 50 50> (DF) (ttl 52, id 55112, len 52)
> 18:26:27.932332 10.42.93.250.49240 > 204.152.184.79.80: . [bad tcp cksum e95!] 994:2442(1448) ack 1288247 win 16384 <nop,nop,timestamp 50 35> (DF) (ttl 64, id 32774, len 1500)
> 18:26:27.934595 10.42.93.250.49240 > 204.152.184.79.80: . [tcp sum ok] 2442:3890(1448) ack 1288247 win 16384 <nop,nop,timestamp 50 35> (DF) (ttl 64, id 32775, len 1500)
> 18:26:28.032810 204.152.184.79.80 > 10.42.93.250.49240: . [tcp sum ok] 1288247:1288247(0) ack 994 win 17520 <nop,nop,timestamp 50 50> (DF) (ttl 52, id 55120, len 52)
> 18:26:29.430033 10.42.93.250.49240 > 204.152.184.79.80: . [bad tcp cksum e95!] 994:2442(1448) ack 1288247 win 16384 <nop,nop,timestamp 53 35> (DF) (ttl 64, id 32793, len 1500)
> 18:26:31.428976 10.42.93.250.49240 > 204.152.184.79.80: . [bad tcp cksum e95!] 994:2442(1448) ack 1288247 win 16384 <nop,nop,timestamp 57 35> (DF) (ttl 64, id 32807, len 1500)
> 18:26:35.425700 10.42.93.250.49240 > 204.152.184.79.80: . [bad tcp cksum b0f5!] 994:1494(500) ack 1288247 win 16384 <nop,nop,timestamp 65 35> (ttl 64, id 32839, len 552)
> 18:26:43.425848 10.42.93.250.49240 > 204.152.184.79.80: . [bad tcp cksum b0f5!] 994:1494(500) ack 1288247 win 16384 <nop,nop,timestamp 81 35> (ttl 64, id 32884, len 552)
> 18:26:59.427659 10.42.93.250.49240 > 204.152.184.79.80: . [bad tcp cksum b0f5!] 994:1494(500) ack 1288247 win 16384 <nop,nop,timestamp 113 35> (ttl 64, id 32974, len 552)
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-- 
David Young             OJC Technologies
dyoung@ojctech.com      Engineering from the Right Brain
                        Urbana, IL * (217) 278-3933