Preparation for basic configuration of equipment
DNS introduction:
Usually when we surf the Internet, we enter the "domain name" in the browser, but eventually the data will be sent to the web server, which is still identified by the IP address.
So, in essence, the "web request" is actually sent to the IP address.
A DNS server is a "server" that translates domain names into IP addresses.
On the terminal devices that surf the Internet, the DNS server must be configured:
For example: www.baidu.com-61.135.169.121
Preparations for configuration:
PC is configured correctly
Configure IP address (manually configure + DHCP)
Verify IP address (graphical + CLI interface)
PC: start-> run-> cmd
Ipconfig
Ipconfig / all-- > View all the information on all the network cards on the PC
Include IP addr
Mask
Gateway
DNS server
DHCP server
The cable is connected correctly
Network cable
Straight line: the line sequence on both sides is the same; connect different types of devices
Cross lines: different lines on both sides; connect devices of the same type
Line sequence standard
568B 1 White Orange 2 Orange 3 White Green 4 Blue 5 White Blue 6 Green 7 White Brown 8 Brown
568A 1 White Green 2 Green 3 White Orange 4 Blue 5 White Blue 6 Orange 7 White Brown 8 Brown
(swap 1 and 3, 2 and 6)
Network cable classification
Anti-interference ability
CAT5
5E
six
seven
Optical fiber
Multimode fiber pure × × ×
Single-mode optical fiber has a long transmission distance
Control cable-console cable (reversal line)
Crystal head-RS232-> usb-> RS232
Crystal head-USB
Location of the console port:
Equipment front panel
Device rear panel
Note: there will be a clear word on the port-console
Interface:
FastEthernet 0/1 10Mbps
Ethernet 0/1 100Mbps
GitEthernet 0/1 1000Mbps
XGitEthernet 0/1 10000Mbps
X/Y/Z decomposition:
X-slot number
Y-module number
Z-Port number
