Solving Command Line Interface Problems Solving Webcache Performance Problems - 3Com SUPERSTACK 3 WEBCACHE 3000 User Manual

280 C 19: P
HAPTER ROBLEM
Solving Command
Line Interface
Problems
Solving Webcache
Performance
Problems
S
OLVING
If the NTP server is not functional, or you are not confident it is
working correctly, try using another NTP server.
If NTP is enabled and operational, check that traffic on TCP port 123 is
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not blocked by a Firewall between the Webcache and the NTP server.
The timezone is set correctly.
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Alternatively, the Webcache system time can be set manually. If you have
configured the system time manually and it is inaccurate, the Webcache
clock has probably drifted over time. 3Com recommends that you use the
Network Time Protocol to prevent this. If this is not possible, reset the
system time manually using the Time Configuration screen. Also check
that the timezone is set correctly.
Software upgrade detection has failed
You must ensure that FTP requests are not blocked by a Firewall on TCP
ports 20 and 21. Upgrade detection will fail if your Firewall blocks FTP
requests. A "Software Upgrade Download Failed" SNMP trap and e-mail
notification will be issued (if configured) to inform you of the failure; for
further information, see
The Command Line Interface responds slowly to commands.
This is probably due to large amounts of traffic on the network. Logout
and then login again later when the amount of traffic to the Webcache is
less.
You forget the password for the admin user name and can no
longer perform important management operations.
Use the password recovery method outlined on
password for the admin user name.
The performance of the Webcache is poor
Check:
Whether any of the cache storage devices have failed. Examine the
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front panel LEDs to ensure there are no faults found. If there are, enter
this URL into your Internet browser:
http://knowledgebase.3com.com/division/publisher.asp?id=2.
0.77094716.3290900
(correct at time of publication)
"Automatic System Events" on page 214.
page 107 to define a new