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C-4 A
PPENDIX
C: T
ROUBLE
-
SHOOTING
You have added the Switch 3000 TX to an
already busy network, and response times and
traffic levels have increased:
You may have added a group of users to one of the
Switch 3000 TX ports via a repeater or switch, and
not turned off Intelligent Flow Management (IFM).
Turn off IFM on any port that is connected to multi-
ple devices. Refer to “
Setting Up the Switch Ports”
on page 4-11
.
You have connected an endstation directly to
the Switch and the endstation fails to boot cor-
rectly:
The Switch has STP enabled, and the endstation is
booting before the STP initialization process is com-
plete. Specify that the port has Fast Start enabled,
and then reboot the endstation. For more informa-
tion about specifying Fast Start for a port, refer to
“
Configuring the STP Parameters of Ports” on page
5-20.
The Switch keeps ageing out endstation entries
in the Switch Database (SDB):
The Switch has STP enabled, and STP is instructing
the Switch to age entries in the SDB faster because
topology changes are occurring in the network.
1
Reduce the number of topology changes by
enabling Fast Start for all ports which are directly
connected to an endstation; refer to “
Configuring
the STP Parameters of Ports” on page 5-20.
2
Specify that the endstation entries are Non-ageing;
refer to “
Setting Up the Switch Database (SDB)” on
page 4-15
.
3
Consider disabling STP on the Switch, and using
resilient links to provide network resilience; refer to
“
Enabling STP on the Switch” on page 5-17 and
“
Setting Up Resilient Links” on page 4-18.