M2M
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
286
GRE Setting
The
GRE
setting
allows
user
to
create
and
configure
GRE
tunnels.
Before
you
proceed
ensure
that
the
VPN
is
enabled
and
saved.
To
enable
VPN,
go
to
Advanced
Network
>
VPN
>
Configuration
tab.
.
Enabling
GRE
Go
to
Advanced
Network
>
VPN
>
GRE
tab
Enable
GRE
Window
Item
Value
setting
Description
GRE
Unchecked
by
default
Click
the
Enable
box
to
enable
GRE
function.
Max.
Concurrent
GRE
Tunnels
1.
32
is
set
by
default
2.
Max.
of
32
connections
It
specifies
the
maximum
number
of
simultaneous
GRE
tunnel
connections.
Save
N/A
Click
Save
button
to
save
the
settings
Undo
N/A
Click
Undo
button
to
cancel
the
settings
Create/Edit
GRE
tunnel
The
router
supports
up
to
a
maximum
of
32
simultaneous
GRE
tunnel
connections.
Ensure
that
the
GRE
enable
box
is
checked
to
enable
before
we
can
setup
GRE.
When
Add/Edit
button
is
applied
a
series
of
configuration
screen
will
appear.
