238 lines
3.9 KiB
HTML
238 lines
3.9 KiB
HTML
<HTML
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>Configuring an AX.25 interface for TCP/IP</TITLE
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>Linux Amateur Radio AX.25 HOWTO</TH
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><A
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NAME="AEN1194"
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>7. Configuring an AX.25 interface for TCP/IP</A
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></H1
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><P
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>It is very simple to configure an AX.25 port to carry TCP/IP. If you
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have KISS interfaces then there are two methods for configuring an IP
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address. The <EM
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>kissattach</EM
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> command has an option
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that allows you to specify an IP address. The more conventional method
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using the <EM
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>ifconfig</EM
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> command will work on all
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interface types.</P
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><P
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>So, modifying the previous KISS example:</P
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><P
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><TABLE
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BORDER="1"
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><FONT
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><PRE
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CLASS="SCREEN"
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># /usr/sbin/kissattach -i 44.136.8.5 -m 512 /dev/ttyS0 radio
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# /sbin/route add -net 44.136.8.0 netmask 255.255.255.0 ax0
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# /sbin/route add default ax0</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></P
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><P
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>to create the AX.25 interface with an IP address of <TT
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CLASS="LITERAL"
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>44.136.8.5</TT
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> and
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an <TT
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CLASS="LITERAL"
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>MTU</TT
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> of <TT
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CLASS="LITERAL"
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>512</TT
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> bytes. You should still use the
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<EM
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>ifconfig</EM
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> to configure the other parameters if necessary.</P
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><P
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>If you have any other interface type then you use the <EM
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>ifconfig</EM
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> program
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to configure the ip address and netmask details for the port and add a route
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via the port, just as you would for any other TCP/IP interface. The following
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example is for a PI card device, but would work equally well for any other
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AX.25 network device:</P
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><P
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><TABLE
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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># /sbin/ifconfig pi0a 44.136.8.5 netmask 255.255.255.0 up
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# /sbin/ifconfig pi0a broadcast 44.136.8.255 mtu 512
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# /sbin/route add -net 44.136.8.0 netmask 255.255.255.0 pi0a
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# /sbin/route add default pi0a</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></P
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><P
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>The commands listed above are typical of the sort of configuration many of
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you would be familiar with if you have used NOS or any of its derivatives
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or any other TCP/IP software. Note that the default route might not be required
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in your configuration if you have some other network device configured.</P
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><P
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>To test it out, try a ping or a telnet to a local host.</P
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><P
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><TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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># ping -i 5 44.136.8.58</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></P
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><P
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>Note the use of the `<TT
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CLASS="LITERAL"
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>-i 5</TT
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>' arguments to
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<EM
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>ping</EM
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> to tell it to send pings every 5 seconds
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instead of its default of 1 second.</P
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>Configuring an AX.25 port</TD
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> </TD
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>Configuring a NET/ROM port</TD
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