RH 7.3 Networking Issues
 

Hi All,

For some odd reason, the powers that be decided that we have to use RH 7.3 for a particualar app deployment.

I have successfully configured a Dell 1750 with Broadcom 5700 ethernet NICs to work. I am having one problem though.

When I try to SSH to the box from a windows based client (putty in my case) I get connected, but after a few minutes (2 to 5) get disconnected. Infact if I leave the screen alone or keep on pounding the keys does not make one bit of difference. The end result is the same.

If I ssh into this same box from another linux box then the connection remains open for as long as I want. I am at a loss as to explain this behaviour. I do not see any error messages either. I have captured some of Putty ssh data in a log and it is not helpful either. I have it excerpted below if you need it.

Any and all help in identifying and fixing the problem is greatly appreciated. ThanX much for your help in advance.

- Regards.
- SM

you are for sure that the problem is your red hat box and that the problem is not @ your windows ?
or at your router or something cause this sounds indeed very odd.

Well, I am not sure where the problem lies exactly. It is the same Putty client that I use on Windows to connect to atleast 50 odd other linux and UNIX/AIX servers. I do not have any issues with them. This is the only instance where this odd behaviour is seen.

Please look at the excerpt below:
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 16 1b 5d 30 3b 72 6f 6f 74 .........]0;root
00000010 40 74 75 72 70 6d 2d 70 72 6f 64 3a 7e 07 @turpm-prod:~.
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 16 ........
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 18 5b 72 6f 6f 74 40 74 75 ........[root@tu
00000010 72 70 6d 2d 70 72 6f 64 20 72 6f 6f 74 5d 23 20 rpm-prod root]#
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 18 ........
Outgoing packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 00 00 00 00 00 01 64 ........d
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 01 64 ........d
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 01 ........
Outgoing packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 00 00 00 00 00 01 66 ........f
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 01 66 ........f
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 01 ........
Outgoing packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 00 00 00 00 00 01 0d .........
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 02 0d 0a ..........
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 02 ........
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 44 46 69 6c 65 73 79 73 74 .......DFilesyst
00000010 65 6d 20 20 20 20 20 20 20 20 20 20 20 31 6b 2d em 1k-
00000020 62 6c 6f 63 6b 73 20 20 20 20 20 20 55 73 65 64 blocks Used
00000030 20 41 76 61 69 6c 61 62 6c 65 20 55 73 65 25 20 Available Use%
00000040 4d 6f 75 6e 74 65 64 20 6f 6e 0d 0a Mounted on..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 44 .......D
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 3b 2f 64 65 76 2f 73 64 61 .......;/dev/sda
00000010 31 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 1 2
00000020 30 31 36 30 31 36 20 20 20 20 31 32 34 30 33 36 016016 124036
00000030 20 20 20 31 37 38 39 35 36 38 20 20 20 37 25 20 1789568 7%
00000040 2f 0d 0a /..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 3b .......;
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 3f 2f 64 65 76 2f 73 64 61 .......?/dev/sda
00000010 31 30 20 20 20 20 20 20 20 20 20 20 20 20 31 30 10 10
00000020 30 38 30 34 38 38 20 20 20 20 20 33 32 38 32 38 080488 32828
00000030 20 20 20 39 35 33 35 35 39 32 20 20 20 31 25 20 9535592 1%
00000040 2f 61 70 70 6c 0d 0a /appl..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 3f .......?
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 3f 2f 64 65 76 2f 73 64 61 .......?/dev/sda
00000010 32 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 2
00000020 32 30 32 32 32 36 20 20 20 20 20 31 33 38 37 32 202226 13872
00000030 20 20 20 20 31 37 37 39 31 32 20 20 20 38 25 20 177912 8%
00000040 2f 62 6f 6f 74 0d 0a /boot..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 3f .......?
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 40 2f 64 65 76 2f 73 64 61 .......@/dev/sda
00000010 39 20 20 20 20 20 20 20 20 20 20 20 20 20 32 30 9 20
00000020 31 36 31 31 37 32 20 20 20 20 20 33 32 38 32 38 161172 32828
00000030 20 20 31 39 31 30 34 32 30 34 20 20 20 31 25 20 19104204 1%
00000040 2f 62 75 69 6c 64 0d 0a /build..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 40 .......@
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 3f 2f 64 65 76 2f 73 64 61 .......?/dev/sda
00000010 38 20 20 20 20 20 20 20 20 20 20 20 20 20 32 30 8 20
00000020 31 36 31 31 37 32 20 20 20 20 20 33 32 38 32 38 161172 32828
00000030 20 20 31 39 31 30 34 32 30 34 20 20 20 31 25 20 19104204 1%
00000040 2f 68 6f 6d 65 0d 0a /home..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 3f .......?
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 3e 2f 64 65 76 2f 73 64 61 .......>/dev/sda
00000010 31 32 20 20 20 20 20 20 20 20 20 20 20 20 20 32 12 2
00000020 30 31 36 30 31 36 20 20 20 20 20 33 32 38 32 38 016016 32828
00000030 20 20 20 31 38 38 30 37 37 36 20 20 20 32 25 20 1880776 2%
00000040 2f 6f 70 74 0d 0a /opt..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 3e .......>
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 42 6e 6f 6e 65 20 20 20 20 .......Bnone
00000010 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 31 1
00000020 39 33 37 36 35 32 20 20 20 20 20 20 20 20 20 30 937652 0
00000030 20 20 20 31 39 33 37 36 35 32 20 20 20 30 25 20 1937652 0%
00000040 2f 64 65 76 2f 73 68 6d 0d 0a /dev/shm..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 42 .......B
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 3e 2f 64 65 76 2f 73 64 61 .......>/dev/sda
00000010 31 31 20 20 20 20 20 20 20 20 20 20 20 20 20 31 11 1
00000020 30 31 31 39 32 38 20 20 20 20 20 31 36 34 37 32 011928 16472
00000030 20 20 20 20 39 34 34 30 35 32 20 20 20 32 25 20 944052 2%
00000040 2f 74 6d 70 0d 0a /tmp..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 3e .......>
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 3e 2f 64 65 76 2f 73 64 61 .......>/dev/sda
00000010 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 34 5 4
00000020 30 33 32 30 39 32 20 20 20 31 33 38 37 39 32 38 032092 1387928
00000030 20 20 20 32 34 33 39 33 34 30 20 20 33 37 25 20 2439340 37%
00000040 2f 75 73 72 0d 0a /usr..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 3e .......>
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 44 2f 64 65 76 2f 73 64 61 .......D/dev/sda
00000010 36 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 6 2
00000020 30 31 36 30 31 36 20 20 20 20 20 33 32 39 31 36 016016 32916
00000030 20 20 20 31 38 38 30 36 38 38 20 20 20 32 25 20 1880688 2%
00000040 2f 75 73 72 2f 6c 6f 63 61 6c 0d 0a /usr/local..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 44 .......D
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 3e 2f 64 65 76 2f 73 64 61 .......>/dev/sda
00000010 37 20 20 20 20 20 20 20 20 20 20 20 20 20 20 33 7 3
00000020 30 32 38 30 38 30 20 20 20 20 20 36 34 31 34 34 028080 64144
00000030 20 20 20 32 38 31 30 31 31 36 20 20 20 33 25 20 2810116 3%
00000040 2f 76 61 72 0d 0a /var..
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 3e .......>
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 16 1b 5d 30 3b 72 6f 6f 74 .........]0;root
00000010 40 74 75 72 70 6d 2d 70 72 6f 64 3a 7e 07 @turpm-prod:~.
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 16 ........
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 18 5b 72 6f 6f 74 40 74 75 ........[root@tu
00000010 72 70 6d 2d 70 72 6f 64 20 72 6f 6f 74 5d 23 20 rpm-prod root]#
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 18 ........
Outgoing packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 00 00 00 00 00 01 0d .........
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 02 0d 0a ..........
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 02 ........
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 16 1b 5d 30 3b 72 6f 6f 74 .........]0;root
00000010 40 74 75 72 70 6d 2d 70 72 6f 64 3a 7e 07 @turpm-prod:~.
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 16 ........
Incoming packet type 94 / 0x5e (SSH2_MSG_CHANNEL_DATA)
00000000 00 00 01 00 00 00 00 18 5b 72 6f 6f 74 40 74 75 ........[root@tu
00000010 72 70 6d 2d 70 72 6f 64 20 72 6f 6f 74 5d 23 20 rpm-prod root]#
Outgoing packet type 93 / 0x5d (SSH2_MSG_CHANNEL_WINDOW_ADJUST)
00000000 00 00 00 00 00 00 00 18 ........
Event Log: Network error: Software caused connection abort


The last line makes me believe that some thing is not right with the linux box and it could be a very simple thing that I am missing.

Again thanQ for all your help.

- SM