Moxa Technologies 331 User Manual download pdf (Page 47)

Moxa C Programmable RTU Controllers Managing Communications

4-13

defaultroute

Once the PPP link is established, make it the default route; if you have a PPP link to the Internet, this is probably

what you want.

192.1.1.17

This is a degenerate case of a general option of the form x.x.x.x:y.y.y.y. Here x.x.x.x is the local IP address and

y.y.y.y is the IP address of the remote end of the PPP connection. If this option is not specified, or if just one

side is specified, then x.x.x.x defaults to the IP address associated with the local machine’s hostname (located

in /etc/hosts), and y.y.y.y is determined by the remote machine.

Example 2: Connecting to a PPP Server over a Hard-wired Link

If a username and password are not required, use the following command (note that noipdefault is optional):

#pppd connect ‘chat –v “ “ “ “ ‘ noipdefault /dev/ttyM0 19200 crtscts “

If a username and password are required, use the following command (note that noipdefault is optional, and

both the username and password are root):

#pppd connect ‘chat –v “ “ “ “ ‘ user root password root noipdefault

/dev/ttyM0 19200 crtscts

How to Check the Connection

Once a PPP connection is set up, you can follow the steps to test the connection. First, type:

/sbin/ifconfig

You should be able to see all the network interfaces that are UP. Check “ppp0” interface, and you should

recognize the first IP address as your own, and the “P-t-P address” (or point-to-point address) the address of

your server. Here’s what it looks like on the RTU controller:

lo Link encap Local Loopback

inet addr 127.0.0.1 Bcast 127.255.255.255 Mask 255.0.0.0

UP LOOPBACK RUNNING MTU 2000 Metric 1

RX packets 0 errors 0 dropped 0 overrun 0

ppp0 Link encap Point-to-Point Protocol

inet addr 192.76.32.3 P-t-P 129.67.1.165 Mask 255.255.255.0

UP POINTOPOINT RUNNING MTU 1500 Metric 1

RX packets 33 errors 0 dropped 0 overrun 0

TX packets 42 errors 0 dropped 0 overrun 0

Now, type:

ping z.z.z.z

where z.z.z.z is the address of your name server. The response may look like:

waddington:~$p ping 129.67.1.165

PING 129.67.1.165 (129.67.1.165): 56 data bytes

64 bytes from 129.67.1.165: icmp_seq=0 ttl=225 time=268 ms

64 bytes from 129.67.1.165: icmp_seq=1 ttl=225 time=247 ms

64 bytes from 129.67.1.165: icmp_seq=2 ttl=225 time=266 ms

--- 129.67.1.165 ping statistics ---

3 packets transmitted, 3 packets received, 0% packet loss

round-trip min/avg/max = 247/260/268 ms

waddington:~$

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 68 69

Comments to this Manuals

No comments

Moxa Technologies 331 User Manual Page 47

Comments to this Manuals

Related products and manuals for Servers Moxa Technologies 331