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Cisco BPX 8600 Series Installation and Configuration
Release 9.3.10, Part Number 78-11603-01 Rev. D0, July 2001
Chapter 23 Configuring BXM Virtual Switch Interface
Class of Service Templates and Qbins
A Qbin template defines a default configuration for the set of Qbins for the logical interface. When a
template assignment is made to an interface, the corresponding default Qbin configuration becomes the
interface’s Qbin configuration.
Some of the parameters of the interface’s Qbin configuration can be changed on a per-interface basis.
Such changes affect only that interface’s Qbin configuration and no others, and do not affect the Qbin
templates.
Figure 23-9 Service Template Overview
Qbin templates are used only with Qbins that are available to VSI partitions, specifically, Qbins 10
through 15. Qbins 10 through 15 are used by the VSI on interfaces configured as trunks or ports. The
rest of the Qbins (0–9) are reserved for and configured by Automatic Routing Management.
Each template table row includes an entry that defines the Qbin to be used for that Class of Service.
This mapping defines a relationship between the template and the interface Qbin’s configuration. As a
result, you need to define a default Qbin configuration to be associated with the template.
Note The default Qbin configuration, although sometime referred as a “Qbin template,”
behaves differently from that of the Class of Service templates.
SC stands for Service Class. Each pre-configured template is one of the
above for each of 3 service templates (VC Database + Qbin (10-15)
SC database 1
SC database 2
SC database 3
SC database 15
Qbin 10
Qbin 11
Qbin 15
SC database per template
Qbin databases per VC database
Pre-configured
Service class
templates
on BCC (1-3)
Template values on BXM
initialized via ComBus
messages at card bring up
VC
decriptor
templates
CoS buffer
descriptor
templates
Master SCT copies on BXM
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