Eais; Protocols And Standards; Cfd Configuration Task List - HPE FlexFabric 5700 Series Configuration Manual

TST
The TST function tests the bit errors between two MEPs. The source MEP sends a TST frame, which
carries the test pattern, such as pseudo random bit sequence (PRBS) or all-zero, to the target MEP.
When the target MEP receives the TST frame, it determines the bit errors by calculating and
comparing the content of the TST frame. TST frames are unicast frames.

EAIS

Ethernet Alarm Indication Signal (EAIS) enables collaboration between the Ethernet port status and
the AIS function. When a port on the device (not necessarily an MP) goes down, it immediately starts
to send EAIS frames periodically to suppress the error alarms. When the port goes up again, it
immediately stops sending EAIS frames. When the MEP receives the EAIS frames, it suppresses
the error alarms locally, and continues to send the EAIS frames. If a MEP receives no EAIS frames
within 3.5 times the EAIS frame transmission interval, the fault is considered cleared. The port stops
sending EAIS frames and restores the error alarm function. EAIS frames are multicast frames.

Protocols and standards

•
IEEE 802.1ag, Virtual Bridged Local Area Networks Amendment 5: Connectivity Fault
Management
•
ITU-T Y.1731, OAM functions and mechanisms for Ethernet based networks

CFD configuration task list

For CFD to work correctly, design the network by performing the following tasks:
•
Grade the MDs in the entire network, and define the boundary of each MD.
•
Assign a name for each MD. Make sure that the devices in the same MD use the same MD
name.
•
Define the MA in each MD according to the VLAN you want to monitor.
•
Assign a name for each MA. Make sure that the devices in the same MA in the same MD use
the same MA name.
•
Determine the MEP list of each MA in each MD. Make sure that devices in the same MA
maintain the same MEP list.
•
At the edges of MD and MA, MEPs should be designed at the device port. MIPs can be
designed on devices or ports that are not at the edges.
To configure CFD, perform the following tasks:
Tasks at a glance
Configuring basic CFD
•
(Required.)
•
(Required.)
•
(Required.)
•
(Required.)
Configuring CFD
•
(Required.)
•
(Optional.)
•
(Optional.)
settings:
Enabling CFD
Configuring service instances
Configuring MEPs
Configuring MIP auto-generation rules
functions:
Configuring CC
Configuring LB
Configuring LT
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