Installation and User Manual
EtherHaul
1200™
Page 162
EH-INST-02, Issue 4.0
When testing a link from one side (local), an external line loopback should be applied on
the local unit.
The loopback can be applied separately for Eth1 and Eth2, and can be set with or
without MAC Address swapping.
Set the loopback mode to external for the desired Ethernet port and set the loopback -
timeout in seconds:
set eth eth1 loopback-timeout 300
set eth eth1 loopback-mode external-mac-swap
Use the following command to clear the loopback:
set eth eth1 loopback-mode disable
10.5.1.3
RF (Radio) Internal Loopback Point
The Ethernet traffic from a customer’s end-equipment or Ethernet analyzer is looped
on the ODU’s radio output, enabling testing of the connection (cable/fiber), the
interface between end-equipment and the ODU and the local ODU.
The loopback should be set with MAC Address swapping and on specific modulation
profile.
Set the loopback mode on the RF menu and set the loopback-timeout in seconds:
set rf loopback-timeout 300
set rf loopback-mode internal-mac-swap qam64 4 1 0.5
Use the following command to clear the loopback:
set rf loopback-mode disable
Note:
For error-free operation at high modulation profiles, no interference should be
present. Switch off remote ODU or change its frequency to eliminate risk of
interference.
10.5.1.4
Ethernet Internal Line Loopback Point
An Internal External loop returns the received frames to the radio side, enabling you to
test Ethernet traffic across the link.
The Ethernet traffic from the Customer’s end-equipment or Ethernet analyzer is looped
at the Ethernet interface of the remote ODU, enabling testing of the connection
(cable/fiber), the interface between end-equipment and the ODU, both local and
remote ODUs, and the radio transmission.
The loopback can be applied separately for Eth1 and Eth2, and can be set with or
without MAC Address swapping.