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4-4
CONTROL ITEMS
GGS-000548-01E
iPASOLINK EX Advanced: Operation & Maintenance
4.3 Loopback Operation
To execute the loopback control, set the system into the Maintenance mode.
Important:
To operate the
Loopback Control
, the system must be set into the Maintenance
mode.
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:
Loopback 1 Mode
: Loops frames back at the near side of L2SW.
Loopback 2 Mode
: Loops frames back at the far side of L2SW. The selected
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.
Procedure 4-2
1. Click the
Maintenance
tool button on the tool bar of the
WebLCT
to put the
system into the Maintenance Mode. The
MAINT
indicator on the tool bar
changes to orange.
2. In the
MENU
frame on the left, expand the
Maintenance Control
, then its
submenu
Loopback Control
to select
L2 Loopback Control
.
The
L2 Loopback Control
window appears.
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