Description Of Line Combination Function - LevelOne WGR-2301 User Manual

Chapter 6 Network parameters

6.2.1 Description of line combination function

1. Line detection mechanism
Regardless of line combination modes, make sure that the network is not interrupted
when the line fails, which require that the device must be able to monitor line status in real
time. To this end, we designed a flexible automatic detection mechanism, and provide a
variety of line detection methods for users to choose, in order to meet the practical
application needs.
To facilitate understanding, several related parameters are introduced first.
Detection interval: The time interval of sending inspection packets. One inspection packet
is sent per time, and the default value is 0 seconds. In particular, when the value is 0, it
means not to make line detection.
Detection times: The number of inspection packets sent within each detection cycle.
Destination IP address: The object of detection. The device will send inspection packets to
the pre-designated target to detect if the line is normal.
The following is an introduction of the device's line detection mechanism in two cases: line
normal and line failure.
When a line fails, the detection mechanism is described as follows: The device will send
an inspection packet to the detection target of the line at the specified detection interval. If
all the inspection packets sent have no response within a detection cycle, this line will be
deemed to be failed, and it will be shielded immediately. For example, if the 3 inspection
packets that are sent have no response within a detection cycle, the line is deemed to be
failed by default.
When a line is normal, the detection mechanism is described as follows: Similarly, the
device will send an inspection packet to the detection target of the line at the specified
detection interval. If half of the inspection packets or above sent have response within a
detection cycle, this line will be deemed to be normal, and it will be restored. For example,
if there are 2 inspection packets that have responded within a detection cycle by default,
the line is deemed to be restored by default.
The device allows users to specify Internet lines for some hosts in the Intranet in advance,
which is realized by setting the "Internal starting IP address" and "Internal end IP address"
of the line, and the hosts whose IP addresses are within two address ranges will give
priority to the use of the specified line. For the hosts with the specified Internet line, they
can only access to the Internet through that line when the specified line is normal.
However, when the specified line fails, they will use other normal lines for Internet access.
Tip: Line detection is not enabled, then the "Detection interval" should be set to "0"
second.
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