Alcatel-Lucent 1643 AMS Applications And Planning Manual page 108

Product description
Enhanced Flow Classification
The X5IP option card supports Enhanced Flow Classification - 802.1Q mode and
801.2ad mode. Network traffic from end users can be classified into flow categories on
the edge ports of a TransLAN® domain. As a result, ports can be provisioned as
"Edge" or "Interior" ports. Edge ports are either Customer Role ports (UNI) or "Virtual
ports" on a Trunk port (E-NNI). A virtual port is the traffic over a trunk port belonging
to a single end-user and is characterized by an S-VID tag.
The QoS edge ports support up to seven provisionable flows of 1k per unit and can be
defined with a combination of the following criteria:
• flow = port
• flow = C-Tag (C-VID, C-UP) previously known as: VID, UP
• flow = IP-TOS field (DSCP)
• flow = Destination address mask (for broadcast/multicast and for customer control
traffic)
Additionally, a default flow for each user is already present. When ports are designated
as "Interior", the flow classification is completely based on the S-UPT bits. There is no
rate control and the S-UPT bits are transparently transported through the device.
Virtual ports on a trunk port can be provisioned to behave as "Interior" ports, i.e. to
use the S-UPT bits for classification instead of the freely provisionable flow. By
provisioning a (virtual) port as an "Interior" port, the flow definition is fixed.
Enhanced Flow Properties
The 1643 AM / 1643 AMS supports enhanced flow classification properties that can be
provisioned for each flow. Users can provision the properties of each flow by assigning
a traffic class and provisioning the threshold rate. The threshold rate (CIR/PIR) can be
provisioned in 1 kbit/s steps above 150 kbit/s. A policy can be provisioned for traffic
above this threshold rate. For example, immediate dropping (strict policing: CIR=PIR)
or marking with high dropping precedence (over-subscription: CIR<= PIR<=MAX).
The assigned traffic class and dropping precedence are coded into the S-UPT bits of
the frame on the egress side.
The X5IP option card supports Committed Burst Size (CBS) and Peak Burst Size
(PBS) provisioning. Users can provision the CBS and PBS parameters to QoS profiles
for IEEE 802.1Q and IEEE 802.1ad modes.
QoS provisioning in Provider Bridge Mode (PBM)
The X5IP option card supports Flow Classification of ingress traffic into the L2 switch
based on the IEEE 802.1Q tagging mode. For every Flow Classification, users can
assign a Flow Profile containing the QoS parameters that are to be applied to the flow.
...................................................................................................................................................................................................................................
4-28 Alcatel-Lucent - Proprietary
See notice on first page
X5IP option card
365-312-801R7.2
Issue 3, May 2007