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| Date: | Tue, 26 Sep 2006 11:29:52 -0600 |
| Content-Type: | text/plain |
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on one of our e3000's sometime Sunday mornings the network stops working.
emails do not go out ( they get queued) ftp transfers fail to connect to
remove server and ftp inbound fails. to correct this problem we stop and
start the network
stop commands
nscontrol stop
continue
netcontrol stop;net=loop
continue
netcontrol stop;net=lan1
start commands
netcontrol start;net=lan1
CONTINUE
netcontrol start;net=loop
CONTINUE
nscontrol start
this past Sunday it occurred sometime between 4:24 and 9:30 am. that is
to say that email sent at 4:24 was sent just fine and email sent at 9:30
was queued. there was no email sent between these times so it is
difficult to find specific times that the failure i am trying to locate a
more precise time so i turn to network logging. I'm not sure i have my
logging set right but it is not taking very much disk space so it does not
seem to set to badly. in looking at the log files i find this kind of a
record.
**********************************************************************
* SUN, SEP 24, 2006, 4:25:25.1 AM NETXPORT(3) *
*--------------------------------------------------------------------*
* Event : INFORMATIVE *
* Entity : TCP *
* Internal Event : Statistics *
* Log Class : Statistics *
* Port ID/PIN/KSO : $880041A0 *
* Location : 19901 Parameter : $00000000 *
* Info Section (hex): *
* 0000: 0067 001C 0051 4DBD 8800 41A0 0006 0000 *
* 0008: 0000 0001 *
*--------------------------------------------------------------------*
* Statistics: *
* IPC Port ID : $B8220019 *
* Bytes sent : 2130706433 Bytes received : 2130706433 *
* User pkts sent : 17 User pkts recd : 6 *
* PM pkts sent : 11 PM pkts recd : 6 *
* Cn asy pkts sent: 0 Cn asy pkts recd: 0 *
* User sends : 0 User receives : 20 *
* Pkts discarded : 0 Pkts rtx'ed : 6612 *
* Checksum errors : 12 Smooth R/T delay: 8 *
* Init recv window: 0 Init send window: 0 *
* Recv burst size : 0 Send burst size : 0 *
* Max send size : 0 Max recv size : 7 *
* Local SAP : 0 Remote SAP : 6 *
* Flags : $0000 Flags1 : $0000 *
* Flags2 : $0000 ICMP msgs recd : 0 *
* Local IP addr : 0.0.0.0 Remote IP addr : 0.0.0.0 *
* Source quenches : 0 *
* Data Section (hex): *
* 0000: 0000 0060 B822 0019 7F00 0001 7F00 0001 *
* 0008: 0000 0011 0000 0006 0000 000B 0000 0006 *
* 0010: 0000 0000 0000 0000 0000 0000 0000 0014 *
* 0018: 0000 0000 0000 19D4 0000 000C 0000 0008 *
* 0020: 0000 0000 0000 0000 0000 0007 0000 0006 *
* 0028: 0000 0000 0000 0000 0000 0000 0000 0000 *
* 0030: 0000 0000 *
**********************************************************************
i am hoping that some of the statistics are since the network was started
and others like pkts sent are since the last short interval.
the current output of link control is:
:linkcontrol @;status=all
Linkname: SYSLINK Linktype: IEEE8023 Linkstate: CONNECTED
Physical Path: 56/56
Current Station Address: 00-60-B0-06-3A-1C
Default Station Address: 00-60-B0-06-3A-1C
Current Receive Filter: broad(1) any(0) k_pckts(1) x_pckts(0)
Current Multicast Addresses:
09-00-09-00-00-01 09-00-09-00-00-03 09-00-09-00-00-04
09-00-09-00-00-06
Transmits no error 792369 Receives no error 844045
Transmit byte count 220147887 Receive byte count 457971185
Transmits error 0 Receives error 0
Transmits deferred 373 Carrier losses 0
Transmits 1 retry 16133 CRC errors 0
Transmits >1 retry 2491 Frame losses 0
Trans 16 collisions 0 Whole byte errors 0
Trans late collision 0 Size range errors 0
802 chip restarts 0 Receives dropped 60732
Heartbeat losses 0 Receives broadcast 160189
Receives multicast 0
the end question is how do i know what is causing the problem?
what should i be logging to help locate the problem?
what should i be looking at when the network is in this hung state next
weekend, since someone has to drive to the machine and issue commands from
the console, to help locate the problem?
-------------------------------------------------
Larry Simonsen
Sr. System Analyst
Flowserve Corporation
505 E. Technology Ave.
Bldg. C, Suite 3100
Orem, UT 84097
Phone: 801-437-3737
Fax: 801-491-1750
-------------------------------------------------
All opinions expressed herein are my own and reflect, in no way, those of
my employer.
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