How to implement automatic dial-up Internet access in SuSE8.0

Article Title: how to implement automatic dial-up Internet access under SuSE8.0. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
I saw DSL in YaST, so I set it. when I started the machine, I saw that dsl0 was loaded. but why cannot I automatically connect it? In addition, if eth0 is set to DHCP, it takes a little time to detect the NIC. So I set it to an IP address, that is, 192.168.1.1. But I still cannot get through the dialing, which is strange. So I searched for ADSL help in YaST's help. after some exploration, I finally got online. So I want to write it down and share it with you. Masters should not laugh at your younger brother's potential, but I think someone will need it.
My input method is only handled by everyone. Otherwise, I cannot write Chinese posts here.
The method is as follows:
You need to modify the content of the three files in the/etc/ppp directory, which are:
(1) chap-secrets,
# Secrets for authentication using CHAP
# Client server secret IP addresses
　　
# OUTBOUND CONNECTIONS
# Here you shoshould add your PPP Login and PPP password to connect to your
# Provider via pap. The * means that the entry (login and passoword may be
# Used for ANY host you connect.
# Thus you do not have to worry about the foreign machine name. Just
# Replace password with your password.
# Hostname * password
　　
# PREDIFINED CONNECTIONS
# These are user and password entries for publically accessible call-by-call
# Internet providers in Germany. If they confict with your config, remove them.
# READ_IN_CALLBYCALL_SECRETS
　　
# INBOUND CONNECTIONS
# Client hostname 192.168.1.1. However, if you have a machine in your Local and use an address, you cannot use it here .)
Your_account@xx.xx (your account) * xxxxxxx (your password) remember the middle * don't delete it.
　　
The settings in pap-secrets are exactly the same as those above. I will omit it.
----------------------------------------------------------------------------------
(2) setting options to find a file is very important. The following is the full text, and a small part is the annotation, so I will not write it.
　　
#/Etc/ppp/options
#
# Not every option is listed here, see man pppd for more details.
# This file is read by the pppd,
# It is an error when it is not present.
#
# Use the following command to see the active options:
#
# Grep-v ^ #/etc/ppp/options | grep-v ^ $
#
　　
#--- ---
# The name of this server. Often, the FQDN is used here.
# Name
　　
#===================================================== ======================================
User your_account@xxx.xx (pay attention to the previous user, do not miss it, the backdoor is followed by the one you used before .)
#===================================================== ======================================
　　
# Enforce the use of the hostname as the name of the local system
# Authentication purposes (overrides the name option ).
# Usehostname
　　
# If no local IP address is given, pppd will use the first IP address
# That belongs to the local hostname. If "noipdefault" is given, this
# Is disabled and the peer will have to supply an IP address.
# Noipdefault
　　
# With this option, pppd will accept the peer's idea of our local IP
# Address, even if the local IP address was specified in an option.
# Ipcp-accept-local
　　
# With this option, pppd will accept the peer's idea of its (remote) IP
# Address, even if the remote IP address was specified in an option.
# Ipcp-accept-remote
　　
# Run the executable or shell command specified after pppd has terminated
# The link. This script cocould, for example, issue commands to the modem
# To cause it to hang up if hardware modem control signals were not
# Available.
# If mgetty is running, it will reset the modem anyway. So there is no need
# To do it here.
# Disconnect "chat -- \ d ++ \ d \ c OK ath0 OK"
　　
# Increase debugging level (same as-d). The debug output is written
# To syslog LOG_LOCAL2.
Debug
　　
# Enable debugging code in the kernel-level PPP driver. The argument n
# Is a number which is the sum of the following values: 1 to enable
# General debug messages, 2 to request that the contents of stored Ed
# Packets be printed, and 4 to request that the contents of transmitted
# Packets be printed.
# Kdebug n
　　
# Noauth means do not require the peer to authenticate itself, this must
# Be set if you want to use pppd to connect to the internet. In this case
# * You * must authenicate yourself to the peer (internet provider), so do
# Not disable this setting unless you are the dial-in server which where
# The peer has to autenticate.
Noauth
　　
# Use hardware flow control (I. e. RTS/CTS) to control the flow of data
# On the serial port.
Crtscts
　　
# Specifies that pppd shoshould use a UUCP-style lock on the serial device
# To ensure exclusive access to the device.
Lock
　　
# Use the modem control lines. (is default)
# Modem (comment it out, which is enabled by default)
# The opposite: local
#
# Description:
# Don't use the modem control lines. With this
# Option, pppd will ignore the state of the CD (Car ??
# Rier Detect) signal from the modem and will not
# Change the state of the DTR (Data Terminal Ready)
# Signal.
#
# You need to disable modem and enable local if you want to connect
# To anoter system without using a modem:
Local (add this)
　　
# Async character map -- 32-bit hex; each bit is a character
# That needs to be escaped for pppd to receive it. 0 x0 00000001
# Represents '\ x01', and 0x80000000 represents '\ x1f '.
# To allow pppd to work over a rlogin/telnet connection, ou shoshould escape
# XON (^ Q), XOFF (^ S) and ^]: (The peer shocould use "escape ff ".)
# Asyncmap 200a0000
Asyncmap 0
　　
# Needed for some ISDN Terminaladaters, namely ELSA, those seem to have
# Problems with asyncmap negotiation, so you can turn off this procedure
# In case your ISDN box has trouble with it, by enabling this option.
# You have to disable the asyncmap Option to be sure to have it
# Active. If you use wvdial, set the ISDN parameter in/etc/wvdial. conf
# Instead.
# Default-asyncmap
　　
# Set the MRU [Maximum Receive Unit] value For negotiation. pppd
# Will ask the peer to send packets of no more Bytes.
# Minimum MRU value is 128. The default MRU value is 1500. A value
#296 is recommended for slow links (40 bytes for TCP/IP header + 256
# Bytes of data). The value 1492 is for DSL connections (PPP Default-
# PPPoE Header: 1500-8 = 1492)
Mru 1492 (add one)
　　
# Set the MTU [Maximum Transmit Unit] value . Unless the peer
# Requests a smaller value via MRU negotiation, pppd will request that
# The kernel networking code send data packets of no more than n bytes
# Through the PPP network interface. The value 1492 is for DSL connections
# (PPP Default-PPPoE Header: 1500 to 8 = 1492)
Mtu 1492 (add one for finding one)
　　
# Set the interface netmask , A 32 bit netmask in "decimal dot"
# Notation (e.g. 255.255.255.0 ).
# Netmask 255.255.255.0
　　
# Don't fork to become a background process (otherwise pppd will do so
# If a serial device is specified ).
Nodetach
　　
# If this option is given, pppd will send an LCP echo-request frame
# The peer every n seconds. Under Linux, the echo-request is sent when
# No packets have been stored ed from the peer for n seconds. Normally
# The peer shoshould respond to the echo-request by sending an echo-reply.
# This option can be used with the lcp-echo-failure option to detect
# That the peer is no longer connected.
Lcp-echo-interval 30