Junos® OS Ethernet Interfaces Configuration ... - Juniper Networks

The Y.1731 frame transmission for a service attached to an iterator continues endlessly
unless intervened and stopped by an operator or until the iteration-count condition is
met. To stop the iterator from sending out any more proactive SLA measurement frames,
the operator must perform one of the following tasks:
• Enable the deactivate sla-iterator-profile statement at the [edit protocols oam ethernet
connectivity-fault-management maintenance-domain md-name maintenance association
ma-name mep mep-id remote-mep mep-id] hierarchy level. For more information, see
“Example: Configuring an Iterator” on page 283.
• Provision a disable statement under the corresponding iterator profile at the [edit
protocols oam ethernet connectivity-fault-management performance-monitoring
sla-iterator-profiles profile-name] hierarchy level. For more information, see “Configuring
an Iterator Profile” on page 249.
Ethernet Delay Measurements and Loss Measurement by Proactive Mode
Related
Documentation
Copyright © 2012, Juniper Networks, Inc.
In two-way delay measurement, the delay measurement message (DMM) frame is
triggered through an iterator application. The DMM frame carries an iterator type, length,
and value (TLV) in addition to the fields described in standard frame format and the
server copies the iterator TLV from the DMM frame to the delay measurement reply
(DMR) frame.
In one-way delay variation computation using the two-way delay measurement method,
the delay variation computation is based on the timestamps that are present in the DMR
frame (and not the 1DM frame). Therefore, there is no need for client-side and server-side
clocks to be in sync. Assuming that the difference in their clocks remains constant, the
one-way delay variation results are expected to be fairly accurate. This method also
eliminates the need to send separate 1DM frames just for the one-way delay variation
measurement purpose.
In proactive mode for loss measurement, the router sends packets in standard format
along with loss measurement TLV and iterator TLV.
•
Clearing Iterator Statistics on page 275
• Configuring an Iterator Profile on page 249
• Configuring a Remote MEP with an Iterator Profile on page 250
• Displaying Iterator Statistics on page 270
• Ethernet Frame Delay Measurements Overview on page 238
• Ethernet Frame Loss Measurement Overview on page 244
• Example: Configuring an Iterator on page 283
• Managing Iterator Statistics on page 270
• On-Demand Mode on page 245
• Junos® OS Ethernet Interfaces
Chapter 14: Configuring ITU-T Y.1731 Ethernet Service OAM
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