1ag
Protection Defi ned broad framework for hop by hop
and end-to-end service-level protection
Defi ned four protection mechanisms and
also allowed leveraged end-to-end service
protection available at the transport layer
MEF 2
Restoration Different levels of restoration have
been defi ned to afford a wide variety
of application requirements
MEF 2, IEEE 802.1QAy (PBT/PBB-TE)
TABLE 2.5 Standards Efforts Enabling Quality of Service
Key Components Major Developments Reference
Wide choice of granularity and QoS options Different levels of granular
bandwidth defi ned; also bandwidth
profi le defi ned for providing
different class of services
MEF 6, MEF 10.1
End-to-end performance SLAs Defi ned how some traffi c is
delivered with strict SLAs while
other traffi c is delivered with
best effort; traffi c management
algorithm to ensure SLA
MEF 3, MEF 7,
MEF 10.1 IEEE
802.1Qay
Provisioning based on SLA components??”
CIR, frame loss, delay, and jitter
Defi ned bandwidth profi le capability
that enables provisioning traffi c
based on SLA attributes
MEF 3, MEF 10.1,
IEEE 802.1ag, ITU
Y.1731
86 Chapter 2
Specifically, MEF 10.
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