![](/images/new-backgrounds/1185470/18547099x1.webp)
Backplane
66
3
2
1
0
IP Switch Control Board
Slot numbers in decimal
for media cards
Figure 15. Side View of GRF 400 Chassis with Slots Numbered
The GRF 1600 has 16 media slots. The control board is located in slot 66, as shown in Figure 16.
Backplane |
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Media cards |
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Slot numbers | 0 1 2 3 4 5 6 7 | 66 | 8 9 10 11 12 13 14 15 |
| Control board |
| Switch board |
Figure 16. Top View of the GRF 1600 Chassis
The CPU in the IP Switch Control Board is a 166MHz Pentium processor and runs a variant of BSD UNIX as its operating system. For this reason, the GRF administrator is assumed to be proficient in UNIX.
The IP Switch Control Board is used to install, boot, and configure the router and its media adapters.
It is also used for the logging of messages, the dumping of memory and status, and to perform diagnostic checking of both the GRF and the media adapters.