74 / 92
end can not receive IPSec
cryptographic message sent by
peer end within interval of
triggering DPD, receiving end can
make DPD check, send request
message to opposite end
automatically, detect whether IKE
peer pair exists.
DPD Timeout
Receiving end will make DPD
check and send request message
automatically to opposite end for
check. If it does not receive IPSec
cryptographic message from peer
end beyond timeout, ISAKMP
Profile will be deleted.
180 seconds
ICMP Detection Server
Set ICMP detection derver
N/A
ICMP Detection Local IP
Set ICMP detection local IP
N/A
ICMP Detection Interval
Set ICMP detection interval
60 seconds
ICMP Detection Timeout
Set ICMP detection timeout
5 seconds
ICMP Detection Max Retries
Set the max number of retries if
ICMP failed
10
3.9.2 GRE Tunnels
From navigation panel, select
VPN>>GRE
then enter “
GRE Tunnels
” page, as shown below.
After basic settings, click <Add>.
Page description is shown below:
Parameters
Description
Default
Enable
Click to enable
Enable
Name
Set GRE tunnel name
tun0
Local virtual IP
Set local virtual IP
0.0.0.0
Peer address
Set peer address
0.0.0.0
Remote virtual IP
Set remote virtual IP
0.0.0.0
Remote Subnet
Set remote subnet
0.0.0.0