Traffic Descriptor Management - Alcatel-Lucent 1850 User Provisioning Manual

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Traffic descriptor
A Traffic Descriptor, also called MPLS Tunnel Resource Descriptor, is associated to
Tunnels and/or Pseudowires. A TD is the set of CIR, CBS, PIR, and PBS parameters used
by the System for bandwidth checks related to "port bit rate" or "Virtual Transport bit
rate" on which Tunnels and Pseudowires are defined. The user uses the following
parameters to condition MPLS packets:
CIR MPLS Committed Information Rate - This is the maximum rate (kbyte/sec) with
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high priority guaranteed for the Tunnel/Pseudowire packets delivery.
CBS MPLS Committed Burst Size - This is the maximum burst size (byte) with high
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priority guaranteed for the Tunnel/Pseudowire packets deliver.
PIR MPLS Peak Information Rate - This is the maximum peak rate allowed
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(kbyte/sec) for the Tunnel/Pseudowire.
PBS MPLS Peak Burst Size - This is the maximum burst rate allowed (byte) for the
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Tunnel/Pseudowire.
CIR and PIR values are used for CAC checks with respect to both input Ethernet flows and
output VT bandwidth. CBS and PBS values are used only for CAC checks with respect to
the corresponding parameters of the input ethernet flows.
When the TD is referenced by a Tunnel (or Pseudowire) then the system checks if CIR<=
"transport port bandwidth" on which the Tunnel (or Pseudowire) is defined. All CAC
checks are involved when this TD is used by a Tunnel (Pseudowire).
The Traffic Descriptor Management tab contains the following as shown in
Figure 3-14 Traffic descriptor management
The Traffic Descriptor Management tab provides the following parameters:
Access Identifier - Specifies the access identifier to the MPLS TD. The TD must not
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be "In Use" (no check allowed)
CIR (Kb/s) - Specifies MPLS Committed Information Rate
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CBS (bytes) - Specifies MPLS Committed Burst Size
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PIR (Kb/s) - Specifies MPLS Peak Information Rate
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PBS (bytes) - Specifies MPLS Peak Burst Size
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In Use - Specifies if the TD is referenced by a Tunnel or Pseudowire
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(T)-MPLS menu
Figure 3-14.
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Issue 1 February 2009