Huawei Technologies Proprietary 
 
Chapter 4 Starting up the Switch at the Initial Boot introduces the booting process 
of S3900 Series Ethernet Switches, including the power-on booting of the switch and 
the system initialization. 
Chapter 5 Loading Boot ROM and Host Software introduces how to load 
BootROM and host software for S3900 Series Ethernet Switches. 
Chapter 6 Maintenance and Troubleshooting introduces the problems that might 
occur during the installation and the booting of S3900 Series Ethernet Switches and 
the related solution. 
Appendix A Lightning Protection of the Switch introduces lightning arrester for AC 
power and lightning arrester for network port. 
Intended Audience 
The manual is intended for the following readers: 
z  Network engineers 
z  Network administrators 
z  Customers who are familiar with network fundamentals 
Conventions 
The manual uses the following conventions:  
I. General conventions 
Convention  Description 
Arial  Normal paragraphs are in Arial. 
Boldface 
Headings are in Boldface.  
Courier New
 
Terminal Display is in Courier New. 
 
II. Command conventions 
Convention  Description 
Boldface 
The keywords of a command line are in Boldface. 
italic 
Command arguments are in italic. 
[ ] 
Items (keywords or arguments) in square brackets [ ] are 
optional. 
{ x | y | ... }
 
Alternative items are grouped in braces and separated by 
vertical bars. One is selected.