Quick Eagle Networks DL3800E - Manual (Page 85)

Terminal Interface 4-45
4
Figure 4-21 Loopbacks within the DL3800E unit
Remote Loopback Detection
The DL3800E has the capability of detecting loopbacks which are set on the
remote 3800E or somewhere in the network line. When a remote loopback
is detected, the 3800E removes the port from the DTE data bundle and
reduces the DTE data rate, sets the port LED to yellow and changes the
port status in the Alarms & Status menu to read “Remote Lpbk”. It also
generates an SNMP alarm: enRemoteLpAlarm.
When the remote loopback is cleared, the port is restored to DTE bundle
and LED is restored to green. Port loopback status is cleared and the SNMP
alarm (enRemoteLpAlarm) is idled.
This loopback detection has some limitations. It will not work when a Unit
Number of zero is set (factory default). Also, false remote loopback
conditions will be reported on all ports if the remote Unit Number is the
same as the local Unit Number
NOTE: Remote loopback detection is disabled when the net is
configured for “Install/Test Only.”