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-Some additional information for setting up a syncPPP
-connection using network interfaces.
-You need one thing beside the isdn4linux package:
- a patched pppd .. (I called it ipppd to show the difference)
-Compiling isdn4linux with sync PPP:
-To compile isdn4linux with the sync PPP part, you have
-to answer the appropriate question when doing a "make config"
-Don't forget to load the slhc.o
-module before the isdn.o module, if VJ-compression support
-is not compiled into your kernel. (e.g if you have no PPP or
-CSLIP in the kernel)
-Using isdn4linux with sync PPP:
-Sync PPP is just another encapsulation for isdn4linux. The
-name to enable sync PPP encapsulation is 'syncppp' .. e.g:
- /sbin/isdnctrl encap ippp0 syncppp
-The name of the interface is here 'ippp0'. You need
-one interface with the name 'ippp0' to saturate the
-ipppd, which checks the ppp version via this interface.
-Currently, all devices must have the name ipppX where
-'X' is a decimal value.
-To set up a PPP connection you need the ipppd .. You must start
-the ipppd once after installing the modules. The ipppd
-communicates with the isdn4linux link-level driver using the
-/dev/ippp0 to /dev/ippp15 devices. One ipppd can handle
-all devices at once. If you want to use two PPP connections
-at the same time, you have to connect the ipppd to two
-devices .. and so on.
-I've implemented one additional option for the ipppd:
- 'useifip' will get (if set to not the IP address
- for the negotiation from the attached network-interface.
-(also: ipppd will try to negotiate pointopoint IP as remote IP)
-You must disable BSD-compression, this implementation can't
-handle compressed packets.
-Check the etc/rc.isdn.syncppp in the isdn4kernel-util package
-for an example setup script.
-To use the MPPP stuff, you must configure a slave device
-with isdn4linux. Now call the ipppd with the '+mp' option.
-To increase the number of links, you must use the
-'addlink' option of the isdnctrl tool. (rc.isdn.syncppp.MPPP is
-an example script)
-enjoy it,
- michael