LOYTEC L-IP User Manual

L-IP User Manual 82 LOYTEC
Version 6.1 LOYTEC electronics GmbH
6.3.4 Enhanced Communications Test
The Enhanced Communications Test allows testing the CEA-852 communication path
between the CEA-852 device on the L-IP and other CEA-852 devices as well as the
configuration server. The test thoroughly diagnoses the paths between individual members
of the IP channel and the configuration server in each direction. Port-forwarding problems
are recognized. For older devices or devices by other manufacturers, which do not support
the enhanced test features, the test passes as soon as a device is reachable, but adds a
comment, that the return path could not be tested. A typical output is shown in Figure 77.
Figure 77: Enhanced Communication Test Output.
The Round Trip Time (RTT) is measured as the time a packet sent to the peer device needs
to be routed back to the device. It is a measure for general network delay. If the test to a
specific member fails, a text is displayed to describe the possible source of the problem.
The reasons for failure are summarized in Table 5.
Text displayed (Web icon)
Meaning
OK, Return path not tested (green
checkmark)
Displayed for a device which is reachable but which does not support the
feature to test the return path (device sending to this CEA-852 device).
Therefore a potential NAT router configuration error cannot be detected. If
the tested device is an L-IP, it is recommended to upgrade this L-IP to 3.0 or
higher.
Not reachable/not supported
(red exclamation)
This is displayed for the CS if it is not reachable or the CS does not support
this test. To remove this uncertainty it is recommended to upgrade the L-IP to
3.0 or higher.
Local NAT config. Error
(red exclamation)
This is displayed if the CEA-852 device is located behind a NAT router or
firewall, and the port-forwarding in the NAT-Router (usually 1628) or the
filter table of the firewall is incorrect.
Peer not reachable
(red exclamation)
Displayed for a device, if it is not reachable. No RTT is displayed. The device
is either not online, not connected to the network, has no IP address, or is not
reachable behind its NAT router. Execute this test on the suspicious device to
determine any NAT configuration problem.
Table 7: Possible Communication Problems.
6.4 Documentation
The documentation page allows to access documentation related to the device. See Section
6.2.17 on how to configure documentation links and upload documentation files accessible
via this page.

LOYTEC L-IP Specifications

General

Brand	LOYTEC
Model	L-IP
Category	Network Router
Language	English