Do you have the flow control enabled? Flow control is set
by the pppd option crtscts
for RTS/CTS and xonxoff
for XON/XOFF. If you don't enable the flow control then you will
probably overrun the modem's buffers and this will prove to be
disastrous with vj header compression.
The better flow control is CTS/RTS. However, if you can not do the hardware flow control with the signals CTS and RTS, then use XON/XOFF. The following three steps need to be performed.
xonxoff
. This
tells the pppd process to configure the serial device for XON/XOFF
flow control and to load the two characters into the tty driver.
asyncmap
. This tells the remote system that is
should quote the XON and XOFF characters when it wishes to send them
to you. It is normally specified as the pppd parameter
`asyncmap
a0000'.
ZyXEL
modem uses a sequence `&R1&H4' to
do this.Put the desired rate as an option to the pppd process. If you don't put the rate, then pppd process will use whatever rate is set currently at the time. Not all programs will restore all of the parameters to the previous settings properly upon exit. This may lead to strange rates configured for the serial device.
Use the ppp-2.1.2b.tar.gz
package. The pppd
process was erroneously compiled with the 1.1.8 kernel and it used
Net-3
rather than Net-2
definitions.
Additionally, you should refer to the proxy-ARP mini-HOWTO about the requirements for using proxy-ARP.
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