Huawei ATN 905 Product Description page 29

ATN 905 Multi-service Access Equipment
Product Description
Features and Functions
Issue 01 (2013-05-30)
Description
Ethernet OAM
Performance
Management
BFD
Dying Gasp
IP FPM
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Copyright © Huawei Technologies Co., Ltd.
2 Product Features and Functions
Supports Ethernet performance
management in accordance with ITU-
T Y.1731. The NMS can periodically
collect end-to-end performance data
about a service stream from the device
and generate a statistics report
accordingly. Y.1731 supports:
l Statistics on single-end packet
loss, dual-end packet loss, one-
way jitter, two-way jitter, and two-
way delay.
l VLAN AIS (Alarm Indication
Signal).
l Performance statistics on packets
with a certain priority.
l Multicast LB.
BFD is a detection mechanism used
uniformly in an entire network. It is
used to rapidly detect and monitor the
connectivity of links or IP routes on a
network.
BFD sends detection packets at both
ends of a bidirectional link to check
the link status in both directions. The
defect detection is implemented at the
millisecond level.
l Single-hop BFD and multi-hop
BFD.
l BFD for static routes and IGP.
l BFD for static routes FRR (Fast
ReRoute).
l BFD detection on Trunks.
l BFD for dot1q sub-interfaces.
l BFD priority modification.
Reports a dying gasp alarm to the
NMS software.
IP flow performance monitor (FPM)
is used to directly detect multipoint-
to-multipoint (MP2MP) service flows
and obtain performance statistics such
as packet loss ratio and service trail
delay.
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