|
Re: [Veritas-bu] Network Connection time out (41)
2008-05-30 10:31:19
Here are the hacks
“The 10060 and 10054 errors in the NetBackup logs can
be related to dropped connections due to a timeout, which can occur quite
often under congested networks. It is possible to increase the likelihood
of keeping client connections alive in the event of temporary congestion
by increasing the value of the TcpMaxDataRetransmissions parameter in the
server registry.
1. Start Registry Editor (Regedt32.exe).
2. Locate the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
3. On the Edit menu, click Add Value , and
then add the following registry value:
Value Name: TcpMaxDataRetransmissions
Data Type: REG_DWORD
Value: 6
4. Quit Registry Editor and reboot for the changes to
take effect.
The default value for this is 5 and should gradually be
increased until you find the desired result.
It is also possible to increase the TcpMaxConnectRetransmissions.
This parameter determines the number of times TCP will retransmit a connect
request (SYN) before aborting the attempt. The retransmission timeout is
doubled with each successive retransmission in a given connect attempt.
1. Start Registry Editor (Regedt32.exe).
2. Locate the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
3. On the Edit menu, click Add Value , and
then add the following registry value:
Value Name: TcpMaxConnectRetransmissions
Data Type: REG_DWORD
Value: Default: 3 (in Windows NT)
Default: 2 (in Windows 2000)
4. Quit Registry Editor and reboot for the changes to
take effect.
This value should be increased by incrementals of
=============================
Carl Stehman
IT Distributed Services Team
Pepco Holdings, Inc.
202-331-6619
Pager 301-765-2703
ckstehman AT pepco DOT com
| "WEAVER, Simon \(external\)"
<simon.weaver AT astrium.eads DOT net>
05/30/2008 10:01 AM
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To
| <ckstehman AT pepco DOT com>, "Cornely,
David" <David_Cornely AT intuit DOT com>
|
|
cc
| <veritas-bu AT mailman.eng.auburn DOT edu>,
<veritas-bu-bounces AT mailman.eng.auburn DOT edu>
|
|
Subject
| RE: [Veritas-bu] Network Connection
time out (41) |
|
increase client timeouts perhaps
?
CLIENT_CONNECT_TIMEOUT 32000
HKey_Local_Machine\Software\Veritas\NetBackup\Current
Version\Config !
Simon
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of ckstehman AT pepco DOT com
Sent: Friday, May 30, 2008 1:30 PM
To: Cornely, David
Cc: veritas-bu AT mailman.eng.auburn DOT edu; veritas-bu-bounces AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Network Connection time out (41)
We had similar problems with some systems behind a firewall that could
not handle the backup traffic. Symantec gave us some
regristry hacks that changed how Windows handles TCP timeouts. It
solved our problem.
If you think it might help, let me know and I'll send the regristry hacks.
=============================
Carl Stehman
IT Distributed Services Team
Pepco Holdings, Inc.
202-331-6619
Pager 301-765-2703
ckstehman AT pepco DOT com
"Cornely, David"
<David_Cornely AT intuit DOT com>
Sent by: veritas-bu-bounces AT mailman.eng.auburn DOT edu
05/29/2008 04:38 PM
|
|
To
| <veritas-bu AT mailman.eng.auburn DOT edu>
|
|
cc
|
|
|
Subject
| Re: [Veritas-bu] Network Connection
time out (41) |
|
A while ago we saw similar issues with duplications, at least it was the
same “Connection reset by peer” error (although different error code).
It was fixed by changing our TCP keepalive value on the media server. Perhaps
someone changed a timeout value on the firewall. Play with this value
on the media server to see if it helps.
http://sunsolve.sun.com/search/document.do?assetkey=1-30-2876-1
For windows, probably a registry change.
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu]
On Behalf Of Jimenez, Daniel
Sent: Thursday, May 29, 2008 13:01
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Network Connection time out (41)
Hey guys
I am receiving a Network Connection time out (41) on a consistent basis
when I run a backup on two of our servers. The servers are behind a DMZ
but I have set the BPCD connect-back to use the VNETD port and it worked
for a long time but now all I receive are 41 errors. The servers do write
some data but eventually error out. I am able to telnet to port 13724 on
both servers so there is no blocking on the firewall for that port. Any
assistance would be appreciated.
CLIENT BPBKAR LOG:
12:28:31.007 PM: [648.3824] <16> dtcp_write: TCP - failure: send
socket (1864) (TCP 10054: Connection reset by peer)
12:28:31.038 PM: [648.3824] <16> dtcp_write: TCP - failure: attempted
to send 125 bytes
12:28:31.038 PM: [648.3824] <16> dtcp_write: TCP - failure: send
socket (1864) (TCP 10054: Connection reset by peer)
12:28:31.038 PM: [648.3824] <16> dtcp_write: TCP - failure: attempted
to send 171 bytes
12:28:31.569 PM: [648.3824] <16> dtcp_write: TCP - failure: send
socket (1864) (TCP 10054: Connection reset by peer)
12:28:31.569 PM: [648.3824] <16> dtcp_write: TCP - failure: attempted
to send 171 bytes
12:28:31.757 PM: [648.3824] <16> dtcp_read: TCP - failure: recv socket
(376) (TCP 10053: Software caused connection abort)
12:28:31.804 PM: [648.3824] <2> tar_base::V_vTarMsgW: FTL - tar file
write error (40)
12:28:31.804 PM: [648.3824] <16> dtcp_write: TCP - failure: send
socket (1864) (TCP 10054: Connection reset by peer)
12:28:31.804 PM: [648.3824] <16> dtcp_write: TCP - failure: attempted
to send 6 bytes
12:28:31.804 PM: [648.3824] <16> dtcp_write: TCP - failure: send
socket (1864) (TCP 10054: Connection reset by peer)
12:28:31.804 PM: [648.3824] <16> dtcp_write: TCP - failure: attempted
to send 26 bytes
12:28:31.866 PM: [648.3824] <2> tar_base::V_vTarMsgW: INF - EXIT
STATUS 14: file write failed
12:28:31.866 PM: [648.3824] <16> dtcp_write: TCP - failure: send
socket (1864) (TCP 10054: Connection reset by peer)
12:28:31.866 PM: [648.3824] <16> dtcp_write: TCP - failure: attempted
to send 6 bytes
12:28:31.866 PM: [648.3824] <16> dtcp_write: TCP - failure: send
socket (1864) (TCP 10054: Connection reset by peer)
12:28:31.866 PM: [648.3824] <16> dtcp_write: TCP - failure: attempted
to send 34 bytes
12:28:31.882 PM: [648.3824] <4> tar_backup::backup_done_state: INF
- Not waiting for server status
12:28:31.929 PM: [648.3824] <16> dtcp_write: TCP - failure: send
socket (1864) (TCP 10054: Connection reset by peer)
12:28:31.929 PM: [648.3824] <16> dtcp_write: TCP - failure: attempted
to send 6 bytes
12:28:31.929 PM: [648.3824] <16> dtcp_write: TCP - failure: send
socket (1864) (TCP 10054: Connection reset by peer)
12:28:31.929 PM: [648.3824] <16> dtcp_write: TCP - failure: attempted
to send 33 bytes
12:28:37.585 PM: [648.3824] <4> OVStopCmd: INF - EXIT - status =
0
12:28:39.726 PM: [648.3824] <2> ov_log::V_GlobalLog: INF - BEDS_Term()
Enter InitFlags:0x1
12:28:40.351 PM: [648.3824] <16> dtcp_read: TCP - failure: recv socket
(376) (TCP 10053: Software caused connection abort)
12:28:40.366 PM: [648.3824] <4> OVShutdown: INF - Finished process
12:28:40.366 PM: [648.3824] <4> WinMain: INF - Exiting C:\Program
Files\VERITAS\NetBackup\bin\bpbkar32.exe
12:28:42.382 PM: [648.3824] <4> ov_log::OVClose: INF - Closing log
file: C:\Program Files\VERITAS\NetBackup\logs\BPBKAR\052908.LOG
Daniel Jimenez
Systems Analyst II
Data Protection Team
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