Loopback Operation; L2 Loopback Control - NEC iPASOLINK EX Advanced Instruction Manual

4-4

4.3 Loopback Operation

To execute the loopback control, set the system into the Maintenance mode.
Important:

4.3.1 L2 Loopback Control

This operation carries out the loopbacks for Layer 2 level. Incoming Layer 2 frames
are looped to the source direction with MAC Destination and Source Address Swap.
iPASOLINK EX/A provides two modes for L2 Loopback Control:


Procedure 4-2
1. Click the
2. In the
GGS-000548-01E
To operate the
Loopback Control
mode.
: Loops frames back at the near side of L2SW.
Loopback 1 Mode
: Loops frames back at the far side of L2SW. The selected
Loopback 2 Mode
ports must be operative. In this mode, the available frame size to operate L2
loopback is the maximum frame size minus 16 bytes. The maximum frame size is
specified by the 8.2.2 Max Frame Size Setting in the Set Network and
System Provisioning manual.
Maintenance
system into the Maintenance Mode. The
changes to orange.
frame on the left, expand the
MENU
submenu
Loopback Control
The
L2 Loopback Control
, the system must be set into the Maintenance
tool button on the tool bar of the
MAINT
to select
L2 Loopback Control
window appears.
iPASOLINK EX Advanced: Operation & Maintenance
CONTROL ITEMS
WebLCT
indicator on the tool bar
Maintenance Control
.
to put the
, then its