pppoe-discovery
perform PPPoE discovery
Synopsis
pppoe-discovery
[ options ]
pppoe-discovery { -V |
-h }
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examples
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description
pppoe-discovery
performs the same discovery process as pppoe, but
does not initiate a session. It sends a PADI packet and then
prints the names of access concentrators in each PADO packet
it receives.
options
-I
interface
The -I option
specifies the Ethernet interface to use. Under Linux, it is
typically eth0 or eth1. The interface should be
“up” before you start
pppoe-discovery, but should not be
configured to have an IP address. The default interface is
eth0.
-D
file_name
The -D option
causes every packet to be dumped to the specified
file_name. This is intended for debugging only.
-U
Causes pppoe-discovery to use the Host-Uniq
tag in its discovery packets. This lets you run multiple
instances of pppoe-discovery and/or
pppoe without having their discovery packets
interfere with one another. You must supply this option to
all instances that you intend to run
simultaneously.
-S
service_name
Specifies the desired service
name. pppoe-discovery will only accept access
concentrators which can provide the specified service. In
most cases, you should not specify this option. Use
it only if you know that there are multiple access
concentrators or know that you need a specific service
name.
-C
ac_name
Specifies the desired access
concentrator name. pppoe-discovery will only
accept the specified access concentrator. In most cases, you
should not specify this option. Use it only if you
know that there are multiple access concentrators. If both
the -S and -C options are
specified, they must both match.
-A
This option is accepted for compatibility with
pppoe, but has no effect.
-V |
-h
Either of these options causes
pppoe-discovery to print its version number and
usage information, then exit.
see also
pppoe,
pppoe-sniff
authors
pppoe-discovery
was written by Marco d’Itri <md[:at:]linux[:dot:]it>, based
on pppoe by David F. Skoll
<dfs[:at:]roaringpenguin[:dot:]com>.