4. Appendix
4-10
TI 30A10A05-01E
4.6 Notes on System Power-on
n Notes on system start-up
To establish the Vnet/IP connection certainly, the power of the Layer 2 (or the Layer 3) switches
has to be turned on prior to any of the Vnet/IP stations.
If the Vnet/IP stations are powered-on prior to the Layer 2 (or the Layer 3) switches, the local
security zone may be automatically congured by the Vnet/IP’s security function. This causes the
failure of the Vnet/IP stations communication establishment.
SEE
ALSO
For more information about the Vnet/IP’s security functions, refer to “Vnet/IP Built-in security Features”
(TI 30A10A20-01E).
n Notes on system maintenance
Do not turn o the Layer 2 (or the Layer 3) switches for both buses at the same time such as
during the system maintenance. In such case the local security zone for each station group
segmented by the Layer 2 switches may be automatically congured, then the communications
among Vnet/IP stations are not established. The communication cannot be established even
though the Layer 2 switches are rebooted.
If the Layer 2 (or Layer 3) switches of both buses must be turned o at the same time, turn o the
Vnet/IP stations included in either one of the station groups segmented by the Layer 2 switches.
Once the Layer 2 switches are rebooted after maintenance, then turn on the Vnet/IP stations.
Aug. 22, 2014-00
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