[Linux-decnet-user] DECnet packet size
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[Linux-decnet-user] DECnet packet size
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From: Alan K. <ala...@mi...> - 2006-10-04 20:10:55
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Hi,
I have discovered a flaw in the decnet code I'm not quite sure where it is
but here are the
tcpdumps from our network. The network is segmented with L1 routes between
segments.
segment 1 nodes 1.43,1.42 OpenVMS
L1 router 1.405
segment 2 nodes 1.30 Linux 2.6.18
1.25,1.31,1.33 OpenVMS
L1 Router 1.401
1.401 is connected to 1.405
the problem is with the Linux packet length being less than the Ethernet
minimum of 60 octets
which prevents it from crossing the routers I think.
This concussion is from being able to 'dnping (ncp loop node)' local nodes
but not remotes from Linux
Where as from VMS I can 'dnping (ncp loop node )' any where
08:49:10.455860 1.43 > 1.42 49 conn-initiate 24792>0 ver 4.1 segsize 1459
3100 812e 0000 aa00 0400 2a04 0000 aa00
0400 2b04 0000 0000 1800 00d8 6001 03b3
0500 1902 00a8 2100 0004 5354 4d38 2700
0000 00
08:49:10.485026 1.43 > 1.42 33 link-service 24792>8614 ack 0 seg 1 dat seg
count 0
2100 8126 0000 aa00 0400 2a04 0000 aa00
0400 2b04 0000 0000 10a6 21d8 6000 8001
0000 0000 0000 0000 0000 0000 0000
08:49:10.485026 1.43 > 1.42 71 data 24792>8614 ack 0 seg 1
4700 8126 0000 aa00 0400 2a04 0000 aa00
0400 2b04 0000 0000 60a6 21d8 6000 8001
1000 5555 5555 5555 5555 5555 5555 5555
5555 5555 5555 5555 5555 5555 5555 5555
5555 5555 5555 5555 55
08:49:10.485026 1.43 > 1.42 29 ils-ack 24792>8614 ack 1
1d00 8126 0000 aa00 0400 2a04 0000 aa00
0400 2b04 0000 0000 14a6 21d8 6001 8000
0000 0000 0000 0000 0000 0000 0000
08:49:10.493359 1.43 > 1.42 30 disconn-initiate 24792>8614 object rejected
connect
1e00 8126 0000 aa00 0400 2a04 0000 aa00
0400 2b04 0000 0000 38a6 21d8 6000 0000
0000 0000 0000 0000 0000 0000 0000
15:48:23.620618 1.30 > 1.31 35 link-service 8197>24665 ack 1 ackdat 8 seg
2017 dat seg count 0
0x0000: 2300 8126 0000 aa00 0400 1f04 0000 aa00 #..&............
0x0010: 0400 1e04 0000 0000 1059 6005 2001 8008 .........Y`.....
0x0020: a0e1 0700 00 .....
15:48:23.623771 1.31 > 1.30 29 ils-ack 24665>8197 ack 2017
0x0000: 1d00 8126 0000 aa00 0400 1e04 0000 aa00 ...&............
0x0010: 0400 1f04 0000 0000 1405 2059 60e1 8700 ...........Y`...
0x0020: 0000 0000 0000 0000 0000 0000 0000 ..............
15:48:26.193445 endnode-hello endnode vers 2 eco 0 ueco 0 src 1.33 blksize
1498 rtr 0.0 hello 0 data 0
0x0000: 2200 0d02 0000 aa00 0400 2104 03da 0500 ".........!.....
0x0010: 0000 0000 0000 0000 aa00 0400 9105 0f00 ................
0x0020: 0002 aaaa 0000 0000 0000 0000 0000 ..............
15:48:26.720649 endnode-hello endnode vers 2 eco 0 ueco 0 src 1.30 blksize
1498 rtr 0.0 hello 0 data 0
0x0000: 2200 0d02 0000 aa00 0400 1e04 03da 0500 "...............
0x0010: 0000 0000 0000 0000 aa00 0400 9105 0a00 ................
0x0020: 0002 aaaa ....
15:48:27.332669 1.30 > 1.26 35 link-service 8199>8430 ack 1 ackdat 0 seg
2019 dat seg count 0
0x0000: 2300 8126 0000 aa00 0400 1a04 0000 aa00 #..&............
0x0010: 0400 1e04 0000 0000 10ee 2007 2001 8000 ................
0x0020: a0e3 0700 00 .....
15:48:27.333512 1.26 > 1.30 29 ils-ack 8430>8199 ack 2019
0x0000: 1d00 8126 0000 aa00 0400 1e04 0000 aa00 ...&............
0x0010: 0400 1a04 0000 0000 1407 20ee 20e3 8700 ................
0x0020: 0000 0000 0000 0000 0000 0000 0000 ..............
15:48:27.575012 endnode-hello endnode vers 2 eco 0 ueco 0 src 1.27 blksize
1498 rtr 0.0 hello 0 data 0
0x0000: 2100 0d02 0000 aa00 0400 1b04 03da 0500 !...............
0x0010: 0000 0000 0000 0000 aa00 0400 9105 1e00 ................
0x0020: 0001 aa20 2000 0081 9200 00ff 534d 4225 ............SMB%
0x0030: 0000 ..
15:48:29.982596 endnode-hello endnode vers 2 eco 0 ueco 0 src 1.25 blksize
1498 rtr 0.0 hello 0 data 0
0x0000: 2200 0d02 0000 aa00 0400 1904 03da 0500 "...............
0x0010: 0000 0000 0000 0000 aa00 0400 9105 0f00 ................
0x0020: 0002 aaaa 0000 0000 0000 0000 0000 ..............
15:48:30.570235 endnode-hello endnode vers 2 eco 0 ueco 0 src 1.26 blksize
1498 rtr 0.0 hello 0 data 0
0x0000: 2200 0d02 0000 aa00 0400 1a04 03da 0500 "...............
0x0010: 0000 0000 0000 0000 aa00 0400 9105 0f00 ................
0x0020: 0002 aaaa 0000 0000 0000 0000 0000 ..............
15:48:33.620813 1.30 > 1.31 35 link-service 8197>24665 ack 1 ackdat 8 seg
2018 dat seg count 0
0x0000: 2300 8126 0000 aa00 0400 1f04 0000 aa00 #..&............
0x0010: 0400 1e04 0000 0000 1059 6005 2001 8008 .........Y`.....
0x0020: a0e2 0700 00 .....
15:48:33.625205 1.31 > 1.30 29 ils-ack 24665>8197 ack 2018
0x0000: 1d00 8126 0000 aa00 0400 1e04 0000 aa00 ...&............
0x0010: 0400 1f04 0000 0000 1405 2059 60e2 8700 ...........Y`...
0x0020: 0000 0000 0000 0000 0000 0000 0000 ..............
15:48:34.838871 endnode-hello endnode vers 2 eco 0 ueco 0 src 1.31 blksize
1498 rtr 0.0 hello 0 data 0
0x0000: 2200 0d02 0000 aa00 0400 1f04 03da 0500 "...............
0x0010: 0000 0000 0000 0000 aa00 0400 9105 0f00 ................
0x0020: 0002 aaaa 0000 0000 0000 0000 0000 ..............
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