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8 — Troubleshooting 5620 SAM client GUI
8.1
Troubleshooting common client application problems
The following procedures describe how to troubleshoot client GUI and OSS
application issues.
Procedure 8-1 Problem: Performance is slow across the clients
Possible causes are:
Using the netstat command on the client may help troubleshoot network throughput
problems. When an Ethernet LAN is highly congested, the actual throughput slows down.
This is caused by packets colliding on the LAN as multiple machines begin to transmit at
approximately the same time, for example, when multiple 5620 SAM client GUIs or OSS
applications are performing simultaneous tasks.
1
8-2
•
congested LAN
•
improperly sized platforms
To check for LAN throughput issues:
i
Open a command or shell tool.
ii
To collect data to determine whether there is network bottleneck, type:
netstat -i s ↵
where s is the time, in seconds, over which you want to collect data. Alcatel recommends that
you start with 50 s; this time interval may require adjusting to meet your specific requirements.
The -i parameter shows the state of the interfaces that are used for TCP/IP
traffic.
iii
Review the output. The following is sample netstat output:
netstat -i 5
input
le0
packets errs packets errs colls packets errs packets errs
colls
6428555 41
541360
49998
22
0
0
71
0
7
This sample displays the number of input and output packets, errors and
collisions on the le0 interface. There is another set of columns which display
the results for all the interfaces. This sample only has one interface, so both
sets of columns display the same result.
Calculate the number of collisions as a percentage of the number of output
packets. For example, according to the last line of output, there were three
collisions and seven output packets resulting in a 42% rate.
output
input
80
49998 6454787 41
0
0
22
0
3
71
Alcatel 5620 Service Aware Manager, Release 2.1 R2
(Total)
output
567592
80
0
0
0
0
7
0
May 2005
95-5887-01-00-B
0
3
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Table of Contents
Troubleshooting
