Operation - GarrettCom 500-Series Installation And User Manual

Magnum 500-Series Switching Hubs
Figure 3.5. Be certain that the main power is off before opening the unit or
changing any internal settings.
Switch
SW2
SW7
When Non-Auto:
Jumper
JP4
JP3
SW7
JP4
SW7
100
JP4
1
Figure 3.5 : Magnum 528's internal jumpers for auto-negotiation ON or OFF
Note that auto-negotiation is an on-going process that can introduce changes in
network operation at any time, whether intended or accidental. Getting an auto-
negotiating network running properly once is not enough to make certain that it will
continue to operate correctly indefinitely. Attached devices can and do change while the
network is operating. In addition, there may be intermediate devices (such as media
converters, which do not support auto-negotiation) in the cabling between the switched
port and the rest of the network, requiring the switching port to be fixed in speed and
mode in order to achieve and maintain the desired overall network operation.
Therefore, the default setting of fixed 100Mb speed with F/H manual selection
(no auto-negotiation, copper ports) is generally desirable because it is a safe and a
maximum-performance condition for the Model 528's Fast Ethernet high speed ports.
See Section 4.4 for additional information on auto-negotiation functionality.
4.0

OPERATION

This chapter describes the functions and operation of the Magnum 508, 528
and 528F Switching Hubs.
GARRETT
Port Function
Both 100Mb Auto-negotiation 100 Mb (Non-Auto)
Port 1 Uplink
Port Function
Port 1 10 / 100 config
Port 2 10 / 100 config
JP3
10
Installation and User Guide (08/98)
Default setting
Uplink =
Position 1 - 2
100 Mb (default)
100 Mb (default)
SW2
100 Mb PORTS
NEGOTIATION
SW2
19
Manual setting
AUTO
Uplink X
Position 2 - 3
10 Mb
10 Mb