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IM AQ1300-01EN
Features
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App
Index
1.19 E-OAM Test
The AQ1300/AQ1301 is equipped with an Ethernet OAM (Ethernet operation, administration
and maintenance; hereafter referred to as E-OAM) function that complies with the ITU-T Y.1731
Recommendation and IEEE802.1ag Standard. The following tests can be performed.
• CC (continuity check) test
• LB (loop back) test, multicast LB execution
• LT (link trace) execution
Overview of the E-OAM Test
The E-OAM test checks the connection of network devices that are connected to a network segment
configured with an E-OAM router. In this test, the AQ1300/AQ1301 sends E-OAM frames and
checks whether response frames are returned from devices connected at the far end of the network
(MEP; maintenance end point) or routers connected in the middle of the network (MIP; maintenance
intermediate point).
Moreover, another AQ1300/AQ1301, functioning as an emulator, can be connected in place of the
other network device (MEP) and return response frames to the AQ1300/AQ1301 on the transmitting
end.
AQ1300/AQ1301
Router 1
(MIP)
Router 2
(MIP)
Network
device (MEP)
Other device
CCM frame
transmission
LBM frame
transmission
LBM frame reception
LTM frame
transmission
LTR frame reception
LTR frame reception
LTR frame reception
CC test
LB test
LT execution
LB reply
LT reply
CC test
CC (Continuity Check) is a test in which CCM frames (Continuity Check Message) are sent periodically
to a device (MEP) at the far end of the network in order to check whether the route to the device is
connected. You can set the transmission interval to 100 ms, 1 s, 10 s, or 60 s. When the route is
disconnected (LOC: loss of continuity detection), an RDI (remote defect indication) frame is transmitted
to the network device at the destination address.
