Specifications

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Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
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Chapter 10 Cisco IGX 8400 Series IP Service
IP Service—Functional Overview
Each service template type has an associated Qbin. Qbins provide the ability to manage bandwidth by
temporarily storing cells, and then serving them out as bandwidth is available. This is based on factors
including bandwidth availability, and the relative priority of different classes of service.
When ATM cells arrive from the edge LSR at the UXM port with one of four CoS labels, they receive
CoS handling based on that label. A table lookup is performed, and the cells are processed based on their
connection classification. Based on its label, a cell receives the ATM differentiated service associated
with its template type, (MPLS1 template), and service type (for example, label cos2 bw), plus associated
Qbin characteristics and other associated ATM parameters.
For information on setting up service class templates on the IGX, see Chapter 8, “ATM
Service—Functional Overview.”
VC Descriptor Parameters
Table 10-3 describes the connection parameters and range of values that may be configured, if not
already preconfigured, for ATM service classes per VC.
Every service class does not include all parameters. For example, a CBR service type has fewer
parameters than an ABR service type.
Note Every service class does not have a value defined for every parameter listed in Table 10-3.
Table 10-3 Connection Parameter Descriptions and Ranges
Object Name Range/Values Template Units
Qbin no. 10 – 15 Qbin no.
Scaling class 0 – 3 Enumeration
CDVT 0 – 5M (5 sec) Seconds
MBS 1 – 5M Cells
ICR MCR – PCR Cells
MCR 50 – LR Cells
SCR MCR – LineRate Cells
UPC enable 0 – Disable GCRAs
1 – Enabled GCRAs
2 – Enable GCRA No. 1
3 – Enable GCRA No. 2
Enumeration
UPC CLP selection 0 – Bk 1: CLP (0+1)
Bk 2: CLP (0)
1 – Bk 1: CLP (0+1)
Bk 2: CLP (0+1)
2 – Bk 1: CLP (0+1)
Bk 2: Disabled
Enumeration