| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | Some additional information for setting up a syncPPP |
| 2 | connection using network interfaces. |
| 3 | --------------------------------------------------------------- |
| 4 | |
| 5 | You need one thing beside the isdn4linux package: |
| 6 | |
| 7 | a patched pppd .. (I called it ipppd to show the difference) |
| 8 | |
| 9 | Compiling isdn4linux with sync PPP: |
| 10 | ----------------------------------- |
| 11 | To compile isdn4linux with the sync PPP part, you have |
| 12 | to answer the appropriate question when doing a "make config" |
| 13 | Don't forget to load the slhc.o |
| 14 | module before the isdn.o module, if VJ-compression support |
| 15 | is not compiled into your kernel. (e.g if you have no PPP or |
| 16 | CSLIP in the kernel) |
| 17 | |
| 18 | Using isdn4linux with sync PPP: |
| 19 | ------------------------------- |
| 20 | Sync PPP is just another encapsulation for isdn4linux. The |
| 21 | name to enable sync PPP encapsulation is 'syncppp' .. e.g: |
| 22 | |
| 23 | /sbin/isdnctrl encap ippp0 syncppp |
| 24 | |
| 25 | The name of the interface is here 'ippp0'. You need |
| 26 | one interface with the name 'ippp0' to saturate the |
| 27 | ipppd, which checks the ppp version via this interface. |
| 28 | Currently, all devices must have the name ipppX where |
| 29 | 'X' is a decimal value. |
| 30 | |
| 31 | To set up a PPP connection you need the ipppd .. You must start |
| 32 | the ipppd once after installing the modules. The ipppd |
| 33 | communicates with the isdn4linux link-level driver using the |
| 34 | /dev/ippp0 to /dev/ippp15 devices. One ipppd can handle |
| 35 | all devices at once. If you want to use two PPP connections |
| 36 | at the same time, you have to connect the ipppd to two |
| 37 | devices .. and so on. |
| 38 | I've implemented one additional option for the ipppd: |
| 39 | 'useifip' will get (if set to not 0.0.0.0) the IP address |
| 40 | for the negotiation from the attached network-interface. |
| 41 | (also: ipppd will try to negotiate pointopoint IP as remote IP) |
| 42 | You must disable BSD-compression, this implementation can't |
| 43 | handle compressed packets. |
| 44 | |
| 45 | Check the etc/rc.isdn.syncppp in the isdn4kernel-util package |
| 46 | for an example setup script. |
| 47 | |
| 48 | To use the MPPP stuff, you must configure a slave device |
| 49 | with isdn4linux. Now call the ipppd with the '+mp' option. |
| 50 | To increase the number of links, you must use the |
| 51 | 'addlink' option of the isdnctrl tool. (rc.isdn.syncppp.MPPP is |
| 52 | an example script) |
| 53 | |
| 54 | enjoy it, |
| 55 | michael |
| 56 | |
| 57 | |
| 58 | |