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R250D-E
Hardware Installation and Maintenance Guide
In other words, the information in Area 1 at one end is the same as the information in Area 2
at the other end of the cable.
Precautions for Using Engineering Labels
When using labels, pay attention to the following points:
l
l
l
l
l
5.4.2 Engineering Labels for Optical Fibers
These labels are affixed to the optical fibers that connect the optical interfaces on the boards
in a chassis, or on the device boxes. There are two types of labels for optical cables:
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l
Labels for the Optical Fibers Connecting Devices
Meaning of the Label
Table 5-22
connect two devices.
Table 5-22 Information on labels affixed to the fibers between two devices
Content
MN-B-C-D-
R/T
Issue 01 (2016-09-30)
When printing, writing, or attaching labels, keep the labels clean.
Since the label paper is made of moistureproof material, ink-jet printers and ink pens
cannot be used to print and write labels.
Labels should be attached neatly. New-type labels are L-shaped. If they are pasted at
incorrect locations or in the incorrect direction, the appearance of the device is affected.
Power cable ties should be attached in the same positions on power cables, with
identification plates on the same side.
The positions of "up", "down", "left" or "right" are all based on the viewpoint of the
engineering person who is working on the label.
One is for the fiber that connects the optical interfaces on two devices.
The other is for the fiber that connects the device and the ODF.
lists information on both sides of the labels affixed to the optical fibers that
Meaning
MN: cabinet
number
B: chassis
number
C: physical slot
number
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Example
M: The cabinet rows from front to back are numbered
from A to Z.
N: The cabinet columns from left to right are numbered
from 01 to 99.
For example, A01 is the cabinet in row A and column
01.
Numbered in bottom-up order with two digits, for
example, 01.
Numbered in top-down and left-right order starting
from 01. For example, 01 is the first slot at the top left
of the chassis.
5 Appendix
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