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Enable IP header
compression
Click to enable IP header compression
Disable
Use Peer DNS
Click to enable use peer DNS
Enable
Link detection interval
Set link detection interval
55 s
Link detection Max. Retries
Set link detection max. retries
10
Enable Debug
Click to enable debug
Disable
Expert Option
Set expert options
N/A
ICMP Detection Server
Set ICMP detection server
N/A
ICMP Detection Interval
Set ICMP Detection Interval
30 s
ICMP Detection Timeout
Set ICMP detection timeout
20 s
ICMP Detection Retries
Set ICMP detection max. retries
3
3.2.3 Link Backup
Click the “Network>>Link Backup” in the navigation tree to configuration interface.
Table 3-2-3-1
Parameters of Link Backup
Link Backup
Function description: When the system runs, main link will first be enabled for
communication. However, when the main link is disconnected due to certain reason, the
system will automatically switch to the backup link to ensure normal communication.
Parameters
Description
Default
Enable
Click to enable link backup
Disable
Main Link
Optional WAN or dialing interface
WAN
ICMP Detection Server
Set ICMP detection server
N/A
ICMP Detection Interval
Set ICMP Detection Interval
10 s
ICMP Detection Timeout
Set ICMP detection timeout
3 s
ICMP Detection Retries
Set ICMP detection max. retries
3
Backup Link
Optional dialup/cellular or WAN
Dialup/Cellular
Connection
Backup mode
Optional hot or cold backup
Hot backup
Table 3-2-3-2
Parameters of Link Backup - Backup Mode
Link Backup - Backup Mode
Function description: Select the way of link backup.
Parameters
Description
Hot Backup
Main link and backup Link keep online at the same time.
Cold Backup
Backup line will only be online when the main link is disconnected.
3.2.4 LAN
LAN provides configuration and modification of the parameters related to LAN for the device.