| 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 0.0.0.0) 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 | |