12 Loop
102
ARGUS 152
12 Loop
A loop can be created only on Ethernet.
In a loop, all incoming Ethernet frames on layer 1 (L1) are returned to the sender
unchanged.
In a loop on layer 2 (L2) of the OSI model, ARGUS swaps the source MAC address for the
destination MAC address and then returns all Ethernet frames.
The loop requires the following parameters:
Protocol-independent parameters
The opening of test parameters is described in the chapter "Configuring accesses", see
page 30.
Setting
Description
Test parameter:
Loop
Layer
This setting determines what layer of the OSI model the loop runs on.
- L1: all incoming Ethernet frames on a loop on layer 1 (L1) are returned to
the sender unaltered.
- L2: on a loop on layer 2 of the OSI model, ARGUS exchanges the source
MAC address with the destination MAC address and returns all incoming
Ethernet frames.
- L3: on a loop on layer 3 (L3) of the OSI model, ARGUS exchanges the
destination and own IP address as well as the MAC addresses and then
returns all incoming Ethernet frames.
Default:
L2
