I am writing to you to ask for your help about syncronous serial
communications and cards. As I dont have much knowledge about this kind of
hardware and communications, I am a bit confused.
first of all, what I want to do is to connect two suse linux 6.2 (kernel
2.2.14) PCs using 2 sattelite modems between them.
I had made this configuration before, using com2 port,slip and ppp protocols
and it worked.but the speed was not what I had desired.so I wanted to try it
usin sync. serial cards.
I have 2 sealevel ACB-IV 2 port ssc. sealevel doesnot support linux drivers
but I think there are generic drivers in linux kernel 2.2.14 like alan cox's
driver for these cards. however, so far, I coulnot succeed installing this
card's driver and couldnt configure the interfaces.
what I did step by step is written below.I dont understand what is wrong or
#insmod syncppp (is this hdlc driver??)
when I type ifconfig afterwards, I see hdlc0 and hdlc1 interfaces but they
look a little strange to me. because link encaps is unsepc. and hwadress is
0000...?? and also, though it is the same configuration on both PCs, what
ifconfig shows is very different. I didnt understand what are these recieved
packets and transfer packet values? I havent sent anything yet?
ifconfig screen shots are attached.
later, I type:
ifconfig hdlc0 PC1ipaddr pointopoint PC2ipaddr up
ip addresses are assigned but there is no connection when I try to ping!
now, how can I configure a sync serial card? maybe I better buy a new card
which is better for my purpose but which one?
I need documentation about sync communication configuration but I couldnt
find so far?
do I need X.25, V.35? can I connect PCs back to back to check if the cards
work?and then connect to the modems?
what kind of cable should I use? does the cross cable that I used to connect
com2 ports using slip protocol works for sync card interface also?
another important thing is that all sync cards are used for connection to a
server via a router.but I want to use it to connect PCs via sat modems. what
should I do?
I will be so glad if you help.I cannot get enough support from anybody and I
cannot find enough documentation.