
Chapter 4: Feature Description
Ethernet Features
Logical Interface Attributes
The following logical interface attributes can be configured by users:
General Attributes
•
Traffic Flow Administration – Enables traffic via the logical interface. This attribute is useful
when the user groups several physical interfaces into a single logical interface. The user can
enable or disable traffic to the group using this parameter.
Ingress Path Classification at Logical Interface Level
These attributes represent part of the hierarchical classification mechanism, in which the logical
interface is the lowest point in the hierarchy.
•
VLAN ID – Users can specify a specific CoS and Color for a specific VLAN ID. In the case of
double-tagged frames, the match must be with the frame’s outer VLAN. Permitted values are
CoS 0 to 7 and Color Green or Yellow per VLAN ID. This is the highest classification priority on
the logical interface level, and overwrites any other classification criteria at the logical interface
level.
•
802.1p Trust Mode – When this attribute is set to Trust mode and the arriving packet is 802.1Q
or 802.1AD, the interface performs QoS and Color classification according to user-configurable
tables for 802.1q UP bit (C-VLAN frames) or 802.1AD UP bit (S-VLAN frames) to CoS and Color
classification.
•
IP DSCP Trust Mode –When this attribute is set to Trust mode and the arriving packet has IP
priority bits, the interface performs QoS and Color classification according to a user-
configurable DSCP bit to CoS and Color classification table. 802.1p classification has priority
over DSCP Trust Mode, so that if a match is found on the 802.1p level, DSCP bits are not
considered.
•
MPLS Trust Mode – When this attribute is set to Trust mode and the arriving packet has MPLS
EXP priority bits, the interface performs QoS and Color classification according to a user-
configurable MPLS EXP bit to CoS and Color classification table. Both 802.1p and DSCP
classification have priority over MPLS Trust Mode, so that if a match is found on either the
802.1p or DSCP levels, MPLS bits are not considered.
•
Default CoS – The default CoS value for frames passing through the interface. This value can
be overwritten on the service point and service level. The Color is assumed to be Green.
For more information about classification at the logical interface level, see
page on
Ingress Path Rate Meters at Logical Interface Level
•
Unicast Traffic Rate Meter Admin – Enables or disables the unicast rate meter (policer) on the
logical interface.
•
Unicast Traffic Rate Meter Profile – Associates the rate meter (policer) with a specific rate
meter (policer) profile.
•
Multicast Traffic Rate Meter Admin – Enables or disables the multicast rate meter (policer) on
the logical interface.
•
Multicast Traffic Rate Meter Profile – Associates the rate meter (policer) with a specific rate
meter (policer) profile.
Page 4-54
Содержание PTP 820S
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Страница 156: ...Chapter 6 Standards and Certifications This chapter includes Supported Ethernet Standards Page 6 1 ...
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