Juniper JUNOSE 11.2, Configuration Manual

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In this case, a low error frame threshold of 600 frames is set. When this threshold
is exceeded, an Errored Frame Event TLV is sent to the remote peer.
b. Configure a high threshold value for frame errors, which when exceeded triggers
an action.
host1(config-if)# ethernet oam lfm link-monitor frame-seconds threshold high
60
In this case, a high error frame threshold of 60 frames is set. When this threshold
is exceeded, the action configured on the interface using the
ethernet oam lfm
high-threshold action command is taken.
c. Configure a period of time during which error frames are counted for both high
and low threshold settings. The time duration is specified in hundred millisecond
units.
host1(config-if)# ethernet oam lfm link-monitor frame-seconds window 10
In this case, the window during which error frames are counted is set as 10
hundred millisecond units. The configured window is valid for both high and low
threshold settings. The high and low threshold settings are reset whenever a
new window, during which errors are counted, commences.
d. Configure a low threshold value for errored frame seconds, which causes an
Errored Frame Seconds Summary Event TLV to be sent to the OAM entity when
the threshold is exceeded. The Errored Frame Seconds Summary Event TLV
counts the number of errored frame seconds that occurred during the specified
period. An errored frame second is any 1-second period that has at least one
errored frame.
host1(config-if)# ethernet oam lfm link-monitor frame-seconds-summary
threshold low 60
In this case, a low errored frame seconds threshold of 60 frame seconds is set.
When this threshold is exceeded, an Errored Frame Seconds Summary Event
TLV in an Event Notification OAM PDU is sent from the local OAM entity to the
remote peer.
e. Configure a high threshold value for errored frame seconds, which when exceeded
triggers an action.
host1(config-if)# ethernet oam lfm link-monitor frame-seconds-summary
threshold high 6
In this case, a high threshold of 6 errored frame seconds is set. When this
threshold is exceeded, the action configured on the interface using the
ethernet
oam lfm high-threshold action command is taken.
f. Specify a period of time in which frame seconds summary error events are
counted for both high and low threshold settings. The time period used for
counting events is specified in seconds.
host1(config-if)# ethernet oam lfm link-monitor frame-seconds-summary window
10
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JunosE 11.2.x Link Layer Configuration Guide