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ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter9 Configuring Resource Management
Configuring Physical and Logical Interface Parameters
Rx mcr-clp01: none
Rx cdvt: 1024 (from default for interface)
Rx mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx cdvt: none
Tx mbs: none
Configuring Interface Service Category Support
You can configure which service categories connection admission control (CAC) allows on an interface.
You can configure interface service category support only on physical interfaces and shap ed and
hierarchical logical virtual path (VP) tunnel interfaces.
Note For information on how to configure your physical and logical VP tunnel interfaces, see Chapter 7,
“Configuring Virtual Connections.”
The underlying service category for shaped and hierarchical VP tunnels is CBR. For VP shap ed tunnels,
interface service category support can be used to configure a service ca tegory other than CBR for VCs
within the tunnel. For physical interfaces and hierarchica l VP tunnels, all service category VCs (by
default) can migrate across the interface. However, you can use the interface service category support
feature to explicitly allow or prevent VCs of specified service categories to migrate across the interface.
Table 9 -10 shows the service category of the shaped VP (always CBR), the service categories you can
configure for transported VCs, and a suggested transit VP service category for the tunnel.
The following restrictions apply to interface service category supp ort:
This configuration is allowed on physical interfaces and shaped and hierarchical V P tunnel logical
interfaces.
On shaped VP tunnel logical interfaces, only one service category is permitted at a time. To replace
CBR with another service category on these interfaces, you must first deny the CBR service
category, then permit the chosen service category. To deny a service category, you must delete all
user VCs of that service category on the interface.
For ABR and UBR, only zero MCR is supported on VCs on a shaped VP tunnel.
Table9-10 Service Category Support for Physical and Logical Interfaces
Shaped VP Tunnel
Service Category
VC Service
Category
Suggested Transit VP
Service Category
CBR CBR CBR
CBR VBR CBR or VBR
CBR ABR1
1. We recommend ABR only if the transit VP is set up so that congestion
occurs at the shaped tunnel, not in the transit VP.
CBR or VBR
CBR UBR Any service category