Setup Ethernet

1
Setup Ethernet PPP client on Laptop computer

• Presented by Xuewu Cai
• Jianfang Wang

2
Project Purpose

• 1. Setup PCMCIA controller , let it probe
  correctly PCMCIA card attached on it.
• 2. Set up Ethernet interface, including assign IP
  address, subnet mask to it.
• 3. Setup PPP dialup client , write a script
  program using AT command set to dialup. Configure
  pppd to setup PPP interface.

3
Contd (purpose)

• 4. Choose proper route for 2 interfaces above
  including default router, local subnet route,etc
  .loopback interface route.

4
Configureation Steps

• Ethernet card, Modem,etc are installed onto
  laptop computer by PCMCIA controller as PCMCIA
  card.
• PCMCIA card can include ethernet card, modem,
  memory card, serial card,SCSIIDE card,etc.
• PCMCIA support should be compiled into Linux
  kernel

5
Contd (Steps)

• Put system reserved I/O port, memory into
  /etc/pcmcia/config.opts, in out project,parameter
  is
• I/O Range 3E0-3E1
• Memory Range D8000-DBFFF
• Current release contain drivers for all the
  devices. All these drives are loaded as modules
  on linux.
• When system(socket driver) detect the
  availability of pcmcia card in socket slots, it
  will run corresponding shell program under
  /etc/pcmcia to bring up interfaces.
• Ethernet card will run network, modem will run
  serial,etc

6
Configure Ethernet card

• Set network configuration parameter into
  /etc/pcmcia/network.opts
• The details of setting
• IP address 130.85.100.254
• Subnet mask 255.255.255.0

7
Contd (Ethernet Card)

• DNS1 130.85.1.5
• DNS2 130.85.1.3
• default router 130.85.100.1
• local subnet route 130.85.100.0 0.0.0.0

8
Ifconfig output

• lo        Link encapLocal Loopback          
  inet addr127.0.0.1  Bcast127.255.255.255
  Mask255.0.0.0           UP BROADCAST LOOPBACK
  RUNNING  MTU3584  Metric1           RX
  packets18 errors0 dropped0 overruns0 frame0
            TX packets18 errors0 dropped0
  overruns0 carrier0 coll0
• eth0      Link encapEthernet  HWaddr
  00E098011C87           inet
  addr130.85.100.254  Bcast130.85.100.255 
  Mask255.255.255.0           UP BROADCAST
  RUNNING MULTICAST  MTU1500  Metric1          
  RX packets14 errors0 dropped0 overruns0
  frame0           TX packets0 errors0
  dropped0 overruns0 carrier0 coll0          
  Interrupt5 Base address0x300

9
Configure PPP client

• Choose chat as dialup tools
• Write a piece of chat script as following' '
  ATZ OK ATDTtelno CONNECT ' ' username lt user
  account... passwd ltuser password... PPP 1Save
  it as script.dialup
• Run pppd, choosing options likepppd connect
  "chat -f script.dialup" /dev/cua1 115200 -detach
  modem noipdefault defaultroute

10
Contd (PPP client)

• Set proper route for PPP using route command.
• What to disconnect PPP connection? Use command
  likekill cat /var/run/ppp0.pid /dev/console

11
Ifconfig output

• lo Link encapLocal Loopback
  inet addr127.0.0.1 Bcast127.255.255.255
  Mask255.0.0.0 UP BROADCAST LOOPBACK
  RUNNING MTU3584 Metric1 RX
  packets18 errors0 dropped0 overruns0 frame0
  TX packets18 errors0 dropped0
  overruns0 carrier0 coll0
• eth0 Link encapEthernet HWaddr
  00E098011C87 inet
  addr130.85.100.254 Bcast130.85.100.255
  Mask255.255.255.0 UP
  BROADCAST RUNNING MULTICAST MTU1500 Metric1
  RX packets0 errors0 dropped0
  overruns0 frame0 TX packets0
  errors0 dropped0 overruns0 carrier0 coll0
  Interrupt5 Base address0x300
• ppp0 Link encapPoint-to-Point Protocol
  inet addr130.85.97.34 P-t-P130.85.2.203
  Mask255.255.255.0 UP POINTOPOINT
  RUNNING MTU1500 Metric1 RX
  packets24 errors0 dropped0 overruns0 frame0
  TX packets7 errors0 dropped0
  overruns0 carrier0 coll0