CANOGA PERKINS N525 Ethernet Termination Service Unit - Manual (Page 86)

4-10 N525 Ethernet Termination Service Unit
Use the Loopback Setup Menu to display current loopback status, initiate loopbacks, and
configure Address Swapping and CRC Recalculation options. To run a loopback test, follow
these steps:
1. At the Diagnostics Menu, type [ 1 ], "Loopback Setup," and press <Enter>. The Loopback
Setup Menu appears. When the N525 is connected to a remote N525 and SBMC is
enabled, the remote N525’s loopback functions are controlled from the local N525.
2. Type the number for the loopback you want to set, press <Tab> to highlight the
Remote column if needed, pressing <Space> cycles through the options, then press
<Enter>.
a. Loopback State
Sets Loopback Test to Disabled (off), Local, Remote, or Clear All Loopbacks
b. Swap MAC Address at Loopback Point?
Sets if the origination and destination MAC addresses are to be swapped. Yes
swaps the addresses, No does not.
c. Recalculate CRC at Loopback Point?
Sets if the N525 is to recalculate the CRC when MAC addresses are swapped.
Yes recalculates the CRC, No does not.
3. When you finish running Loopback, press <Esc> to return to the Diagnostics screen.
------------------------------------LOOPBACK SETUP------------------------------
Local Remote L357
Loop Test MAC Address: 00 40 2A 80 87 3A 00 40 2A 81 24 69
1) Loopback State Disabled Disabled
2) Swap MAC Address
at Loopback Point? Yes Yes
3) Recalculate CRC
at Loopback Point? Yes Yes
4) Loopback Option Control Software
Select [1-4]:
------------------------------------Messages------------------------------------