Pre 9.0 multilines can only negotiate LCP over 1 line. The
exact line which LCP will occur on is unknown. So in order
to handle this situation we will wait until we receive an
LCP Request before we attempt to negotiate LCP by setting
the mode to PPP_MODE_PEER_SOLICITED_LCP_NEGO. If we are using
this line as a single PPP Line or we are sure our peer can
handle LCP on all the members of the multiline, PPP_MODE_NORMAL
should be selected.
Multilink is a PPP protocol extension which provides restoration
of packets which arrive out of sequence, a possibility with
multiple lines.
Multilink monitor, in conjunction with other configuration data
allows the throughput of a line to be monitored. Additional
lines can be brought into the bundle and taken down dynamically
in response to data traffic volume and other conditions.