PRELIMINARY
Ethernet Functions
MINI-LINK 6351 supports priority handling according to IEEE802.1Q 2005 and
IEEE802.1D 2004. In a network, it is important to only use one set of priority
definitions (for example, IEEE 802.1D 2004). Otherwise, the handling of traffic
types can differ between parts of the network in a non-predictable way.
4.4.1 Classification
The classification mechanism extracts customer priority in frames that enter
the operator domain.
The classification mechanism can extract the following types of customer
priority:
• MPLS TC value in the MPLS header
• IPv4 DSCP value in the IP header
• IPv6 DSCP value in the IP header
• PCP value in the C-tag or S-tag of the Ethernet header
The classification mechanism also supports the following types of combined
customer priority extraction:
• IPv4 and IPv6 headers
• MPLS headers, IP headers (both IPv4 and IPv6), and Ethernet headers,
in that priority order
4.4.2 Marking
The marking mechanism sets the operator priority.
If a frame contains trusted customer priority, the marking mechanism can use
the customer priority together with a mapping table to set the operator priority.
The marking mechanism sets the operator priority to the default priority in the
following cases:
•
the classification mechanism is disabled
• no trusted customer priority included in the frame
4.4.3 Policing
The policing mechanism makes sure that a customer does not use more than
the allowed resources in a network.
The policing mechanism limits the input bit rates based on a bandwidth profile.
The bandwidth profiles support the MEF concepts Committed Information
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1/22102-HRA 901 17/9 Uen PU1 | 2016-07-04
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