M2M
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
287
GRE
Rule
Configuration
Window
Item
Value
setting
Description
Tunnel
Name
A
Must
fill
setting
Enter
a
tunnel
name.
Enter
a
name
that
is
easy
for
you
to
identify.
Interface
1.
A
Must
fill
setting
2.
WAN
1
is
selected
by
default
Select
WAN
interface
on
which
GRE
tunnel
is
to
be
established.
Operation
Mode
1.
A
Must
fill
setting
2.
Alway
on
is
selected
by
default
There
are
three
available
operation
modes.
Always
On,
Failover,
Load
Balance.
Failover/
Always
Define
whether
the
GRE
tunnel
is
a
failover
tunnel
function
or
an
Always
on
tunnel.
Note:
If
this
GRE
is
a
failover
tunneling,
you
will
need
to
select
a
primary
GRE
tunnel
from
which
to
failover
to.
Load
Balance
Define
whether
the
GRE
tunnel
connection
will
take
part
in
load
balance
function
of
the
gateway.
You
will
not
need
to
select
with
WAN
interface
as
the
system
will
automatically
utilize
the
available
WAN
interfaces
to
balance
traffic
loads.
For
more
details
on
WAN
Load
Balance,
refer
to
Load
Balance
Usage
in
this
manual.
On
gateway’s
web
‐
based
utility,
go
to
Basic
Network
>
WAN
>
Load
Balance
tab.
Note:
Failover
and
Load
Balance
functions
are
not
available
for
Dynamic
VPN
specified
in
Tunnel
Scenario.
Tunnel
IP
A
Must
fill
setting
Enter
the
Tunnel
IP
address.
Remote
IP
A
Must
fill
setting
Enter
the
Remote
IP
address
of
remote
GRE
tunnel
gateway.
Normally
this
is
the
public
IP
address
of
the
remote
GRE
gateway.