pppoe reliability

[Nikos Vassiliadis]

On Thursday 18 May 2006 02:07, Michael P. Soulier wrote:
> Hello,
>
> I'm trying FreeBSD as a PPPoE client for my ADSL connection. Setup was
> great, but I'm finding that when I lose a connection (troubles with my
> isp), the ppp command does not return like I would like it to.
>
> [root at kanga ~]# ppp -foreground -nat storm
> Working in foreground mode
> Using interface: tun0
> tun0: Command: default: set ifaddr 10.0.0.1/0 10.0.0.2/0
> tun0: ID0: 0x282eed00 = fopen("/etc/ppp/ppp.conf", "r")
> tun0: Debug: ReadSystem: Checking storm (/etc/ppp/ppp.conf).
> tun0: Command: storm: nat enable yes
> tun0: Command: storm: set device PPPOE:fxp0
> tun0: Command: storm: set authname msoulier at storm.ca
> tun0: Command: storm: set authkey ********
> tun0: Command: storm: set dial
> tun0: Command: storm: set login
> tun0: Command: storm: add default HISADDR
> tun0: ID0: 9 = socket(17, 3, 0)
> tun0: ID0: -1 = write(9, data, 140)
> tun0: TCP/IP: rt_Set failure:
> tun0: TCP/IP: rt_Set:  Cmd = Add
> tun0: TCP/IP: rt_Set:  Dst = 0.0.0.0/0
> tun0: TCP/IP: rt_Set:  Gateway = 10.0.0.2
> tun0: Debug: wrote -1: cmd = Add, dst = 0.0.0.0/0, gateway = 10.0.0.2
>
> I just found the connection down because my modem lost sync, and the
> client didn't return. I was hoping that it would return so that I
> could script the client such that it would always retry, via supervise
> or runit.
>
> Any ideas?

Enable echo so ppp will know when the other peer is down, and then will act
as you tell it to. I think enabling echo and -ddial mode will be fine, no need of
scripting, but anyways the recommended way of interacting with ppp(8) is
pppctl(8).

from ppp man:

        -ddial
             This mode is equivalent to -auto mode except that ppp will bring
             the link back up any time it is dropped for any reason.

         echo
             Default: Disabled.  When this option is enabled, ppp will send
             LCP ECHO requests to the peer at the frequency defined by
             echoperiod''.  Note, LQR requests will supersede LCP ECHO
             requests if enabled and negotiated.  See set lqrperiod'' below
             for details.

             Prior to ppp version 3.4.2, echo'' was considered enabled if
             lqr was enabled and negotiated, otherwise it was considered dis-
             abled.  For the same behaviour, it is now necessary to enable
             lqr echo'' rather than just enable lqr''.