#
ifconfig
eth0
down
(Optional)
To
verify
that
the
Ethernet
connection
is
down,
type:
#
ifconfig
followed
by
the
enter
key.
eth0
should
not
be
listed.
2.9
Bring
Up
the
PPP
Interface
To
enable
the
PPP
interface,
type
the
following
commands:
For
Debian:
#
pon
att-TNAG
For
Ubuntu:
#
pppd
call
att-TNAG
followed by the enter key. You will see the second script you wrote appear on the
screen, followed by the network communication the Skywire modem is going through to
get
connected.
Once
the
process
is
complete,
test
the
connection:
#ping
–c
2
www.google.com
and
you
should
receive
a
response
similar
to
this:
PING
56(84)
bytes
of
data.
64
bytes
(216.58.216.196):
icmp_seq=1
ttl=50
time=47.8
ms
64
bytes
(216.58.216.196):
icmp_seq=2
ttl=50
time=90.6
ms
ping
statistics
---
2
packets
transmitted,
2
received,
0%
packet
loss,
time
1001ms
rtt
min/avg/max/mdev
=
47.818/69.237/90.656/21.419
ms
This
indicates
that
your
PPP
connection
is
up
and
connected
to
the
network.
2.10
Troubleshooting
-
If your PPP fails with the error 0x1 in Section 2.9, chances are your
att-TNAG
file cannot see your
att-TNAG-chat
file. Ensure that the last part of line 3 of
the
att
file:
.../
att-TNAG
-chat
has
the
same
name
as
your
att-TNAG
-chat
file.
The
tool
xxd
may
be
beneficial
to
ensure
that
there
are
no
extra
characters
in
the
file
and
that
the
files
are
named
the
same:
PN
30251
rev
2
NimbeLink
Corp
All
Rights
Reserved
7