Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual page 277

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
In this case, frame seconds summary events are detected during a period
of 10 seconds. 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.
g. Configure a low threshold value for symbol error events that causes an
Errored Symbol Period Event TLV to be sent to the OAM entity when it is
exceeded. The Errored Symbol Period Event TLV counts the number of
symbol error events that occurred during the specified period.
host1(config-if)#ethernet oam lfm link-monitor symbol-period threshold low
60
In this case, a low symbol errors threshold of 60 symbols is set. When this
threshold is exceeded, an Errored Symbol Period Event TLV in an Event
Notification OAM PDU is sent from the local OAM entity to the remote peer.
This event is generated if the symbol error count is equal to or greater than
the specified threshold for that period.
h. Configure a high threshold value for symbol errors, which when exceeded,
triggers an action.
Chapter 7: Configuring IEEE 802.3ah OAM Link-Fault Management
Configuring 802.3ah OAM Link-Fault Management
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