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8237 Hub Installation and Planning Guide
Col
Blinking of this LED indicates that collisions are occurring in this collision
domain.
Tx
Blinking of this LED indicates that data is being transmitted by the 8237,
through the Expansion Port.
Rx
Blinking of this LED indicates that data is being received by the 8237,
through the Expansion Port.
Link
This LED indicates that a link is complete from another device to the
Expansion Port.
100
This LED indicates that 100BASE-TX communication is occurring. This
LED is present on the 10BASE-T/100BASE-TX Fast Expansion Module
only.
Attention: If you remove an Expansion Port without replacing it with another, then
you must replace the blank cover over the empty slot for proper cooling of the 8237.
RMON Daughter Board Installation and Replacement
This procedure is applicable to 8237 Models 002 and 003 only.
The part number of the RMON Daughter Board is printed on the top surface, near
the front of the 8237.
1
Remove power to the 8237 by disconnecting the ac cable from the outlet and
then from the back of the 8237.
2
Remove the 8237’s top cover by following these steps.
a. Remove the three top-cover screws and mounting bracket on each side of
the 8237 as shown in Figure 4-7.
Figure 4-7. Removing the Top-Cover Screws
b. Remove the two top fan-guard screws on the rear of the unit, as shown in
Figure 4-8 on page 4-11.
Summary of Contents for 8237
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Page 166: ...Part Number 85H8847 Printed in Taiwan 85H8847 GA27 4186 00...