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Configuring EAIS
You can configure EAIS on a device that does not support or is not configured with CFD. However,
EAIS must collaborate with the CFD function in the network, so you must configure CFD in the
network.
For a port to send the EAIS frames, configure port status-AIS collaboration, and configure the correct
EAIS frame transmission level and interval. If you only enable port status-EAIS collaboration, but do
not configure the EAIS frame transmission level and interval, the port cannot send EAIS frames.
If you do not specify the VLANs where the EAIS frames can be transmitted, the EAIS frames will be
transmitted in the default VLAN of the current port. Otherwise, the EAIS frames will be transmitted in
the intersection of the following VLANs:
• Specified VLANs where the EAIS frames can be transmitted.
• VLANs to which the port belongs.
You can configure EAIS on the member port of an aggregation group, but the configuration does not
take effect. If you configure EAIS on the port and then add it to an aggregation group, the EAIS
configuration immediately fails to take effect. After the port leaves the aggregation group, the EAIS
configuration takes effect.
If the intersection of the configured VLANs where the EAIS frames can be transmitted and the
VLANs to which the port belongs is empty, no EAIS frame is sent. If the intersection contains more
than 70 VLANs and the EAIS frame transmission interval is 1 second, the CPU usage will be too high.
As a best practice in this case, set the EAIS frame transmission interval to 60 seconds.
To configure EAIS:
Step Command Remarks
1. Enter system view. system-view
N/A
2. Enable port status-AIS
collaboration.
cfd ais-track link-status global
By default, port status-AIS
collaboration is disabled.
3. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
interface
interface-type
interface-number
N/A
4. Configure the EAIS frame
transmission level.
cfd ais-track link-status level
level-value
By default, the EAIS frame
transmission level is not
configured.
5. Configure the EAIS frame
transmission interval.
cfd ais-track link-status period
period-value
By default, the EAIS frame
transmission interval is not
configured.
6. Specify the VLANs where
the EAIS frames can be
transmitted.
cfd ais-track link-status vlan
vlan-list
By default, the EAIS frames can
be transmitted only within the
default VLAN of the port.
Displaying and maintaining CFD
Execute display commands in any view and reset commands in user view.
Purpose Command
Display the AIS configuration and information on the
specified MEP.
display cfd ais
[
service-instance
instance-id
[
mep
mep-id ] ]
Display the AIS configuration and information
display cfd ais-track link-status
[
interface
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