I've upgraded a few machines to RH 6.1 and now I get large (18%) packet loss
between the new machines (there were no problems with RH 5.2).
There is no packet loss between 2.0.35 and NT/Win98/2.0.35 machines
There is 18% packet loss between 2.0.35 and RH 6.1
There is 18% packet loss between Rh 6.1 and other 6.1 machines.
I have used a HUB and a cross-over cable and get the same results. I have
used pchar in both directions. I have changed all the cable segments.
I used pchar to test the network (pathchar gave the same results).
Any ideas? This surely is a 2.2.x network bug?
cheers
Stuart
**
** From RH 6.1 to 2.0.35, 0 loss **
**
[root@chopin pchar-1.0]# ./pchar -v godel -R 1
pchar to godel.linux.bogus (192.168.2.1) using UDP/IPv4
Packet size increments by 32 to 1500
46 test(s) per repetition
1 repetition(s) per hop
0:
Partial loss: 0 / 46 (0%)
Partial char: rtt = 0.443693 ms, (b = 0.001190 ms/B), r2 = 0.974313
stddev rtt = 0.021907, stddev b = 0.000029
Hop char: rtt = 0.443693 ms, bw = 6722.092492 Kbps
Partial queueing: avg = 0.000000 ms (0 bytes)
1: 192.168.2.1 (godel.linux.bogus)
Path length: 1 hops
Path char: rtt = 0.443693 ms, r2 = 0.974313
Path bottleneck: 6722.092492 Kbps
Path pipe: 372 bytes
Path queueing: average = 0.000000 ms (0 bytes)
**
** From RH 6.1 to RH 6.1, 18% loss **
**
[root@chopin pchar-1.0]# ./pchar -v escher -R 2
pchar to escher.linux.bogus (192.168.2.4) using UDP/IPv4
Packet size increments by 32 to 1500
46 test(s) per repetition
2 repetition(s) per hop
0:
Partial loss: 17 / 92 (18%)
Partial char: rtt = 0.468458 ms, (b = 0.001086 ms/B), r2 = 0.968096
stddev rtt = 0.022356, stddev b = 0.000030
Hop char: rtt = 0.468458 ms, bw = 7364.713939 Kbps
Partial queueing: avg = 0.000007 ms (6 bytes)
1: 192.168.2.4 (escher.linux.bogus)
Path length: 1 hops
Path char: rtt = 0.468458 ms, r2 = 0.968096
Path bottleneck: 7364.713939 Kbps
Path pipe: 431 bytes
Path queueing: average = 0.000007 ms (6 bytes)
**
** From RH 6.1 to Win 98, 0% loss **
**
[root@chopin pchar-1.0]# ./pchar -v bach -R 2
pchar to bach.linux.bogus (192.168.2.2) using UDP/IPv4
Packet size increments by 32 to 1500
46 test(s) per repetition
2 repetition(s) per hop
0:
Partial loss: 0 / 92 (0%)
Partial char: rtt = 0.526577 ms, (b = 0.001541 ms/B), r2 = 0.995469
stddev rtt = 0.011782, stddev b = 0.000016
Hop char: rtt = 0.526577 ms, bw = 5192.973853 Kbps
Partial queueing: avg = 0.000035 ms (23 bytes)
1: 192.168.2.2 (bach.linux.bogus)
Path length: 1 hops
Path char: rtt = 0.526577 ms, r2 = 0.995469
Path bottleneck: 5192.973853 Kbps
Path pipe: 341 bytes
Path queueing: average = 0.000035 ms (23 bytes)
**
** From RH 6.1 to RH 6.1 using cross-over cable, 18% loss **
**
[root@chopin pchar-1.0]# ./pchar -v escher -R 2
pchar to escher.linux.bogus (192.168.2.4) using UDP/IPv4
Packet size increments by 32 to 1500
46 test(s) per repetition
2 repetition(s) per hop
0:
Partial loss: 17 / 92 (18%)
Partial char: rtt = 0.471707 ms, (b = 0.001088 ms/B), r2 = 0.967970
stddev rtt = 0.022446, stddev b = 0.000030
Hop char: rtt = 0.471707 ms, bw = 7350.134660 Kbps
Partial queueing: avg = 0.000006 ms (5 bytes)
1: 192.168.2.4 (escher.linux.bogus)
Path length: 1 hops
Path char: rtt = 0.471707 ms, r2 = 0.967970
Path bottleneck: 7350.134660 Kbps
Path pipe: 433 bytes
Path queueing: average = 0.000006 ms (5 bytes)
**
** From RH 6.1 to 2.0.35 using cross-over cable, 0% loss **
**
[root@chopin pchar-1.0]# ./pchar -v godel -R 2
pchar to godel.linux.bogus (192.168.2.1) using UDP/IPv4
Packet size increments by 32 to 1500
46 test(s) per repetition
2 repetition(s) per hop
0:
Partial loss: 0 / 92 (0%)
Partial char: rtt = 0.439446 ms, (b = 0.001183 ms/B), r2 = 0.974038
stddev rtt = 0.021899, stddev b = 0.000029
Hop char: rtt = 0.439446 ms, bw = 6761.455352 Kbps
Partial queueing: avg = 0.000042 ms (35 bytes)
1: 192.168.2.1 (godel.linux.bogus)
Path length: 1 hops
Path char: rtt = 0.439446 ms, r2 = 0.974038
Path bottleneck: 6761.455352 Kbps
Path pipe: 371 bytes
average = 0.000042 ms (35 bytes)
**
** From RH 6.1 to yet another RH 6.1 machine, 18% loss **
**
[root@chopin pchar-1.0]# ./pchar -v shane -R 2
pchar to shane.linux.bogus (192.168.2.18) using UDP/IPv4
Packet size increments by 32 to 1500
46 test(s) per repetition
2 repetition(s) per hop
0:
Partial loss: 17 / 92 (18%)
Partial char: rtt = 0.815409 ms, (b = 0.002528 ms/B), r2 = 0.967296
stddev rtt = 0.052700, stddev b = 0.000070
Hop char: rtt = 0.815409 ms, bw = 3164.425823 Kbps
Partial queueing: avg = 0.000021 ms (8 bytes)
1: 192.168.2.18 (shane.linux.bogus)
Path length: 1 hops
Path char: rtt = 0.815409 ms, r2 = 0.967296
Path bottleneck: 3164.425823 Kbps
Path pipe: 322 bytes
Path queueing: average = 0.000021 ms (8 bytes)
[root@chopin pchar-1.0]#
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