PPP-layer Echo

From: Crist J. Clark (cristjc_at_comcast.net)
Date: 04/27/05

  • Next message: Kövesdán Gábor: "Re: errors while starting named" 
    Date: Wed, 27 Apr 2005 10:23:04 -0700
To: freebsd-net@freebsd.org

    I want to do something rather simple, but a quick look at
    documentation ("man ppp") didn't give me an answer, and I'm
    rather pressed for time.

    All I want to do is send an echo-request and listen for the
    echo-reply at the PPP layer. Note that I am talking about
    pings _at the link layer,_ not IP layer pings. A quick look
    at the ppp(8) manpage didn't seem to indicate any tools for
    sending or receiving PPP-layer echoes. If ppp(8) doesn't have
    the ability, does anyone have any other _simple_ suggestions
    for doing this (e.g. dunno if it's worth writing a netgrap(4)
    node for this unless its really simple)?

    (BTW, support for PPP-layer echoes seems to be required by
    RFC1661. Anyone know to what extent real-world PPP implementations
    really handle them correctly?) 

    -- 
Crist J. Clark                     |     cjclark@alum.mit.edu
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