PPPOEC(8) Maintenance Procedures PPPOEC(8)


pppoec - PPPoE chat utility


pppoec [-omillisecs] [-smillisecs] [-v] device
[service [ [except]server... [only]]]

pppoec [-omillisecs] [-v] -i [device]


The pppoec utility implements the client-side negotiation of PPPoE. It is
intended to be used with the pppd(8) connect option, in the same manner
as the chat(8) utility is used for asynchronous dial-up PPP.

When given with the -i flag, pppoec sends out a broadcast query on the
given interface named by the device parameter. You can specify no other
arguments in this mode. All responding PPPoE servers and the offered
services are displayed on standard output.

Otherwise, when given without the -i flag, pppoec does the full PPPoE
client-side negotiation. The device parameter is the intended Ethernet
interface, and must already be plumbed with sppptun(8). The optional
service parameter specifies a particular service desired; other offered
services will be ignored. The optional server parameter specifies a
specific server desired. You can specify server as an Ethernet address in
the usual x:x:x:x:x:x format (with "*" in any of the six byte positions
interpreted to mean "any"), or as a symbolic name resolved through
/etc/ethers (or NIS), or as a PPPoE access concentrator name. The sense
of the match (true or false) can be inverted by specifying the keyword
except before this string. This parameter can be specified more than
once, and the first match is taken.

If you specify the server parameter, then the selected servers become
"preferred." If no preferred server responds, then the first responding
server is used instead. To exclude non-matching servers entirely, append
the keyword only.


The following options are supported:

Sends out broadcast query over interface specified by device.

Sets the initial wait time in milliseconds for PADO from the server
before PADI is retried. The default is 500 milliseconds for normal
operation, or 3000 milliseconds (3 seconds) for inquiry (-i) mode.

Sets the initial wait time in milliseconds for PADS from the server
before PADR is retried. The default is 2000 milliseconds (2

Displays verbose progress messages, including all PPPoE messages
sent, and all state machine transitions.

You normally do not need to adjust the parameters set with -o and -s.
They are provided for coping with unusually slow servers.


The following operands are supported:

plumbed Ethernet interface

preferred server or, if you specify only, the specified server

desired service; other available services are ignored


Example 1: Connecting to Any Service on hme0

The following command enables you to connect to any PPPoE service on

# /usr/bin/pppd sppptun plugin pppoe.so connect "/usr/lib/inet/pppoec hme0" debug

Often, a command such as the preceding is specified in an /etc/ppp/peers
file instead. For example, enter the following in /etc/ppp/peers/myisp:

plugin pppoe.so
connect "/usr/lib/inet/pppoec hme0"

To invoke the PPP connection described in the file, enter:

% /usr/bin/pppd call myisp

Note that, because the /etc/ppp/peers files are considered privileged by
pppd, you need not be root to invoke the preceding command.

Example 2: Connecting to a Particular Service

A more complex example: on hme0, connect to only the internet service
offered by PPPoE servers with access concentrator name isp, but not to
any Ethernet addresses starting with 40:0:1a.

# /usr/lib/inet/pppoec hme0 internet except 40:0:1a:*:*:* isp only

Note that the except 40:0:1a:*:*:* filter must come before isp, because
the filters are first-match.


The following exit values are returned:

Successful completion.

An error occurred.


executable command

Solaris PPP tunneling device driver.

usual location of error output (see


sppptun(4M), pppd(8), pppoed(8), sppptun(8)

RFC 2516, Method for Transmitting PPP Over Ethernet (PPPoE), Mamakos et
al, February 1999


Error messages are written to standard error, which is normally
redirected by pppd to /etc/ppp/connect-errors. The errors can also be
redirected to pppd's standard output by using the updetach option.

If you specify the -v, verbose progress messages are displayed, including
all PPPoE messages sent, and all state machine transitions. Specifying
the updetach or nodetach pppd option is helpful when using verbose mode.

January 9, 2002 PPPOEC(8)