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Chapter 3
Installation
Repeat Steps
Step 8
3.8 ONS 15200 System Internal Bus Connection
You can extend the ONS 15200 system internal bus between system nodes by physically connecting
control area network
You may combine the two different network objects as long as the total CAN bus length is less than 22
meters and the following rules apply:
Note
You can obtain one-meter (3.3 ft.) and five-meter (16.4 ft.) bus cables from Cisco (P/N 72-2654 and
72-2790, respectively).
•
•
•
•
Route the bus cables from one node to another and connect them to the INT BUS ports.
A CAN bus connects CLIP modules on an ONS 15252 MCU, as well as the NCB modules (no more than
two NCB modules are allowed per CAN bus). You can extend this data bus over several co-located
network elements (ONS 15252 MCUs or ONS 15201 SCUs) to a larger logical unit. Normally one CAN
bus connects all ONS 15200 equipment located at one site.
78-13765-01
1
–
7
for each SCU in the configuration.
CAN) bus cables between the nodes.
(
The ONS 15252 MCU has a CAN bus length of 1 meter.
The ONS 15201 SCU has a CAN bus length of 0.5 meters.
Two SCUs are joined with a 6-pole cable with RJ-12 male connectors CAN bus extension cable. The
CAN bus length of the extension cable combination is 1.5 times the physical length of the cable
(Figure 3-45
and
Figure
3-46).
If Maintenance Manager is connected to either the ONS 15252 or the ONS 15201 with a PC CAN
cable/LAP CAN driver cable combination, the CAN bus length of the cable is three times the
physical length of the cable.
Cisco ONS 15200 Installation, Setup, and Test Manual
3-53
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