I have tried making connection between two linux machines with leased line
ppp. I used motorola 14,4 kbps leased line modem. My two linux boxes are Redhat
6.1. Here are my configurations:

---/etc/ppp/options file on local machine---
crtscts
mru 1500
mtu 1500
passive
192.168.0.1:192.168.0.2
-chap
modem
noauth
-pap
persist
proxyarp

---/etc/ppp/options file on remote machine---
crtscts
mru 1500
mtu 1500
passive
192.168.0.2:192.168.0.1
-chap
modem
noauth
-pap
persist
defaultroute

When I entered command /usr/sbin/pppd /dev/ttyS1 38400 on the both machines, I
got messages in each /var/log/messages such bellow:
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xf01fa313> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xf01fa313> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xf01fa313> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xf01fa313> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xf01fa313> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xf01fa313> <pcomp> <accomp>]
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xf01fa313> <pcomp> <accomp>]
...... etc until the connection was terminate.

I tried to decrease DTE speed then. While command /usr/sbin/pppd
/dev/ttyS1 4800 is entered on both linux machines, the ppp was up & running.
Why the working speed was only 4800 bps ?? Why ppp was not working properly at
38400 bps speed ???? Please give me some hints .

best regards
-miral-

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