2
Preparing for maintenance
1.
Obtain the network topology graph and data plan (including interfaces, VLANs, and IP
addresses) and paste them at a place where it can be seen easily.
2.
Prepare the tools and cables that might be required for maintenance. See
Table 1 Tools and cables for maintenance
Item
Description
Cables
•
One standard RS-232 serial port cable
—Used to log in to the device
from the console port.
•
Serial-to-USB adapter
—Connects the USB port on the maintenance
terminal to the serial port on the device. Before the connection, install
the serial port driver on the maintenance terminal and verify that it can
operate correctly.
•
Two straight-through network cables
—Debug management network
ports or other services.
•
Extension cable connectors
—Used to extend cables when their
length is not enough.
•
Optical fibers and transceiver modules such as
XFP/QSPF+/QSFP28/SFP28/CFP/CFP2/SFP+/SFP
—Connect to the
peer device.
Maintenance terminal
Typically, a maintenance terminal is a laptop used to install the serial
communication software for device login. To avoid license expiration, check
the serial communication terminal before you use it.
Auxiliary instruments,
meters, and tools
•
Optical power meter
—Test optical power and receiving sensitivity for
fiber ports.
•
Hygrothermograph
—Test the temperature and humidity of the
environment and fan outlet.
•
Tweezers
—Remove an optical fiber or transceiver module.
•
Cleaning box for optical fiber end faces
.
•
Connector cleaning rod
.
•
Cable tie (cable clamp)
.
•
Screwdrivers
—Phillips screwdrivers and flat-head screwdrivers.
•
Diagonal pliers
.
3.
Obtain contact information of H3C Support.
4.
Access the H3C official website and apply for a user account as required. You can use the user
account to browse or download all product documents.