Channel Select Dip Switch Settings - 3Com CoreBuilder 5000 User Manual

3-6 I O
NSTALLING AND
M
PERATING THE ODULE
The DIP switch legend on the module refers to the backplane
connection as the "channel" selection (CH SEL). The "channel" setting
and the "network" setting are the same. Ports set to the same network
will communicate with each other.
In Table 3-2, the switches are labeled 1 through 8. Switches 1 through
4 enable users to configure all ports for one of the backplane segments
(ethernet 1 to ethernet 8) or as a workgroup (Isolate_1). DIP Switch 5
enables users to switch between Non-volatile RAM (NVRAM) or
DIP-switch controlled configuration. Switches 6, 7, and 8 are not used.
DIP Switch 5 must be set to the positions listed below when
configuring network assignments using:
– NVRAM in Off (down) position
– DIP switch in On (Up) position
Table 3-2

Channel Select DIP Switch Settings

Network Selection
1 (default)
2
3
4
5
6
7
8
Isolate_1
†
By default, Switch 5 is set to NVRAM. When enabled, settings stored in NVRAM takes
precedence over DIP Switch settings 1 through 4.
When the 24-Port module is first installed, the hub checks for
configuration settings in the management module (for example,
DMME). If the hub is unmanaged, then it checks for configuration
settings stored in NVRAM. If, however, there are no configuration
settings in NVRAM or DIP Switch 5 is set to DIP-switch controlled
configuration, the hub then checks the DIPs for configuration
information.
†
Switch Settings
Switch 1 Switch 2
Off On
On Off
Off Off
On On
Off On
On Off
Off Off
On On
On On
Switch 3 Switch 4
On On
On On
On On
Off On
Off On
Off On
Off On
On Off
On On