User guide

Data Communication and Host Modes
Rev 3.0D Jul.09 77
Note: For further information on IPSec, please refer to the IPSec User
Guide.
GRE configuration
SelectingGREoptioninTunnelType,willenabletheGRE
featureoption.
ToconfigureGRE,followthestepsbelow:
1. EnterIPSecGateway.
2. EntertheRemote Address(SubnetoftheGREserver).
3. EntertheRemote Address- Netmask address.
Note: You can configure a second GRE tunnel by configuring the field
parameters from Tunnel 2 Type to Remote Address-Netmask, with
another valid GRE gateway and a valid subnet behind the GRE
gateway.
Keepalive
Keepaliveisusedtotesttheconnectiontothecellularnetwork
bypinginganIPaddressafteraspecifiedperiodofinactivity.
Keepaliveisonlyrecommendedforuserswhohavearemote
terminatedmodemthatinfrequentlycommunicatestothe
networkorifyouhaveexperiencedissuesovertimewherethe
modem
cannolongerbereachedremotely.
WhenKeepalivepingstheIPaddress,anacknowledgement
indicatesthereisanactiveconnectiontothenetwork.Ifthe
RavenXTdoesnotreceivearesponsefromtheIPaddress,it
willmakeadditionalattemptsaccordingtoabackoffalgorithm
beforedeterminingtheInternetconnectionisnotfunctioning
IPSec Key Group 2 Different Key Groups are, 1-DH1,
2-DH2 and 5-DH5.
DH5 denotes highest security
IPSec SA Life Time 7200 (seconds) This indicates how often the
modem renegotiates the IKE SA.
While the renegotiation happens
the VPN tunnel gets
disconnected temporarily.
Table 8-1: Configuration Parameters in AceManager
Name Default Value Description