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I would like to setup a system to run 4 to 8 modems using multilink
PPP. I have looked at the man pages for this on one of my systems,
but it looks like multilink PPP is not supported by NetBSD. Can
someone verify this?
Also, I need to find a serial card that has at least 4 network ports
that is supported by NetBSD. Does any one know where I could get one?
mp Enables the use of PPP multilink; this is an alias for
tilink' option. This option is currently only
Enables the use of the PPP multilink protocol. If the
supports multilink, then this link can become part
of a bundle
between the local system and the peer. If there is
bundle to the peer, pppd will join this link to
otherwise pppd will create a new bundle. See the
tion below. This option is currently only
Disables the use of PPP multilink. This option is
only available under Linux.
Multilink PPP provides the capability to combine two or more
between a pair of machines into a single `bundle', which
appears as a
single virtual PPP link which has the combined bandwidth of
vidual links. Currently, multilink PPP is only supported
Pppd detects that the link it is controlling is connected to
peer as another link using the peer's endpoint
discriminator and the
authenticated identity of the peer (if it authenticates
endpoint discriminator is a block of data which is hopefully
each peer. Several types of data can be used,
assigned strings of bytes, IP addresses, MAC
strings of bytes, or E-164 phone numbers. The endpoint
sent to the peer by pppd can be set using the endpoint option.
In some circumstances the peer may send no endpoint
discriminator or a
non-unique value. The bundle option adds an extra string
added to the peer's endpoint discriminator and
when matching up links to be joined together in a bundle.
option can also be used to allow the establishment of
between the local system and the peer. Pppd uses a TDB
/var/run/pppd2.tdb to match up links.
Assuming that multilink is enabled and the peer is willing to
multilink, then when pppd is invoked to bring up the first
link to the
peer, it will detect that no other link is connected to
the peer and
create a new bundle, that is, another ppp network interface
another pppd is invoked to bring up another link to the
peer, it will
detect the existing bundle and join its link to it.
If the first link terminates (for example, because of a
hangup or a
received LCP terminate-request) the bundle is not
there are no other links remaining in the bundle. Rather
the first pppd keeps running after its link terminates,
until all the
links in the bundle have terminated. If the first pppd
SIGTERM or SIGINT signal, it will destroy the bundle and
send a SIGHUP
to the pppd processes for each of the links in the
bundle. If the
first pppd receives a SIGHUP signal, it will terminate its
link but not
Note: demand mode is not currently supported with multilink.
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