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diff --git a/Documentation/networking/ipddp.rst b/Documentation/networking/ipddp.rst new file mode 100644 index 000000000000..be7091b77927 --- /dev/null +++ b/Documentation/networking/ipddp.rst @@ -0,0 +1,78 @@ +.. SPDX-License-Identifier: GPL-2.0 + +========================================================= +AppleTalk-IP Decapsulation and AppleTalk-IP Encapsulation +========================================================= + +Documentation ipddp.c + +This file is written by Jay Schulist <jschlst@samba.org> + +Introduction +------------ + +AppleTalk-IP (IPDDP) is the method computers connected to AppleTalk +networks can use to communicate via IP. AppleTalk-IP is simply IP datagrams +inside AppleTalk packets. + +Through this driver you can either allow your Linux box to communicate +IP over an AppleTalk network or you can provide IP gatewaying functions +for your AppleTalk users. + +You can currently encapsulate or decapsulate AppleTalk-IP on LocalTalk, +EtherTalk and PPPTalk. The only limit on the protocol is that of what +kernel AppleTalk layer and drivers are available. + +Each mode requires its own user space software. + +Compiling AppleTalk-IP Decapsulation/Encapsulation +================================================== + +AppleTalk-IP decapsulation needs to be compiled into your kernel. You +will need to turn on AppleTalk-IP driver support. Then you will need to +select ONE of the two options; IP to AppleTalk-IP encapsulation support or +AppleTalk-IP to IP decapsulation support. If you compile the driver +statically you will only be able to use the driver for the function you have +enabled in the kernel. If you compile the driver as a module you can +select what mode you want it to run in via a module loading param. +ipddp_mode=1 for AppleTalk-IP encapsulation and ipddp_mode=2 for +AppleTalk-IP to IP decapsulation. + +Basic instructions for user space tools +======================================= + +I will briefly describe the operation of the tools, but you will +need to consult the supporting documentation for each set of tools. + +Decapsulation - You will need to download a software package called +MacGate. In this distribution there will be a tool called MacRoute +which enables you to add routes to the kernel for your Macs by hand. +Also the tool MacRegGateWay is included to register the +proper IP Gateway and IP addresses for your machine. Included in this +distribution is a patch to netatalk-1.4b2+asun2.0a17.2 (available from +ftp.u.washington.edu/pub/user-supported/asun/) this patch is optional +but it allows automatic adding and deleting of routes for Macs. (Handy +for locations with large Mac installations) + +Encapsulation - You will need to download a software daemon called ipddpd. +This software expects there to be an AppleTalk-IP gateway on the network. +You will also need to add the proper routes to route your Linux box's IP +traffic out the ipddp interface. + +Common Uses of ipddp.c +---------------------- +Of course AppleTalk-IP decapsulation and encapsulation, but specifically +decapsulation is being used most for connecting LocalTalk networks to +IP networks. Although it has been used on EtherTalk networks to allow +Macs that are only able to tunnel IP over EtherTalk. + +Encapsulation has been used to allow a Linux box stuck on a LocalTalk +network to use IP. It should work equally well if you are stuck on an +EtherTalk only network. + +Further Assistance +------------------- +You can contact me (Jay Schulist <jschlst@samba.org>) with any +questions regarding decapsulation or encapsulation. Bradford W. Johnson +<johns393@maroon.tc.umn.edu> originally wrote the ipddp.c driver for IP +encapsulation in AppleTalk. |