C-4 APPENDIX C: TROUBLE-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.
1Reduce 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.
2Specify that the endstation entries are Non-ageing;
refer to “Setting Up the Switch Database (SDB)” on
page 4-15.
3Consider 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.