t_anstey@darwin.ntu.edu.au (11/21/90)
Hello Out There, As an educational exercise, but with a very definite purpose in mind, I set up a small system using KA9Q to institute a SLIP service with a PC acting as a router between an ethernet and another PC across a serial line. The set up is given in the following diagram along with the contents of the files AUTOEXEC.NET on both PCs'. I had trouble and broadcast a request for assistance to NEWS. I received really excellent help, almost immediately and managed to get it going. The problem was that I had omitted to advise Multinet of how to get to PC2 via PC1. The best solution for me was to iclude a "rip" command, and now it all works well. I have since had a number of MAIL requests to share the solution. I am only to pleased to do so, but I stress, this is really a joint effort with other people especially Phil Karn who authored KA9Q and was one of those who replied to me directly with suggestions and guidance and all the others who responded to my request for help. An aside: There are some GREAT people out there !!! The following is the working solution (E&OE), with the amendments included. For what I am trying to do it is needlessly complicated and using the "route add default" and ommitting the IFCONFIG would simplify it. Even so I was trying to learn so took a complicated approach to try things out. + + + ethernet + + +=VAX Multinet + (138.80.128.3) + + +=======PC1 KA9Q | | ip address [138.80.128.7] | hostname 80386sx.ntu.edu.au | attach packet 0x61 ec0 5 1500 | attach asy 0x3f8 4 slip cm1 2048 256 9600 | ifconfig cm1 ipaddr [138.80.200.1] netmask 0xffffff00 | broadcast 255.255.255.255 serial | ifconfig ec0 ipaddr [138.80.128.7] netmask 0xffffff00 null | broadcast 255.255.255.255 cable | route add [138.80.200.3] cm1 | route add [138.80.128/24] ec0 | rip add [138.80.128.255] 300 1 | domain addserver [138.80.128.3] | domain suffix ntu.edu.au | ip ttl 100 | ip rtimer 100 | tcp mss 200 | tcp window 1024 | tcp irtt 500 | start telnet | start ftp | | | PC2 KA9Q ip address [138.80.200.3] hostname ps230.ntu.edu.au attach asy 0x3f8 4 slip cm1 2048 256 9600 ifconfig cm1 ipaddr [138.80.200.3] netmask 0xffffff00 broadcast 255.255.255.255 route add [138.80.128.7] cm1 route add [138.80.128.3] cm1 domain addserver [138.80.128.3] domain suffix ntu.edu.au ip ttl 100 ip rtimer 100 tcp mss 200 tcp window 1024 tcp irtt 500 start telnet start ftp Without the "rip add" the situation is as follows: From PC1 I can contact the VAX and TELNET, FTP, PING etc. From PC2 I can FTP and PING PC1 but I cannot contact with the VAX. From the VAX I can PING and FTP PC1, but cannot PING PC2 and the FTP returns "Unreachable Host". (This should have alerted me !!!) With the "rip add", it works fine. I hope this is of some use to others. Regards Tery Anstey Northern Territory University Darwin, NTU Australia INTERNET: T_ANSTEY@DARWIN.NTU.EDU.AU VOICE: 061-89-466-108 FAX: 061-89-570-612