9-2
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 9
Configuring Resource Management
Resource Management Functions
Resource Management Functions
The ATM switch router resource management software provides the following functions:
•
Network management interface—Includes operational configuration changes (take place
immediately), proposed configuration changes (take place on restart), user interface, and status.
•
Default quality of service (QoS) objective table management—Since User-Network Interface 3
(UNI 3) signalling does not provide information elements to signal QoS values, resource
management provides a table that contains default values for QoS.
•
Connection Traffic Table (CTT) management—Rather than store traffic parameters for each
connection in that connection’s data structure, resource management manages a table of connection
traffic parameters, used by network and connection management.
•
Hardware resource management (Catalyst 8540 MSR)—The switch processor feature card provides
functionality that include statistic collection, and traffic policing usage parameter control (UPC).
See
Configuring Global Resource Management, page 9-4
for detailed information.
•
Hardware resource management (Catalyst 8510 MSR and LightStream 1010)—Different sets of
functionality are available with feature card per-class queueing (FC-PCQ) and feature card per-flow
queueing (FC-PFQ). FC-PCQ features include switch cell priority limits, interface queue sizes, and
thresholds. FC-PFQ features include threshold group configuration. The interface pacing feature is
available with both feature cards. See
Processor Feature Card Functionality (Catalyst 8510 MSR
and LightStream 1010), page 9-3
for detailed information.
•
Resource Call Admission Control (RCAC)—Determines whether a virtual channel
connection/virtual path connection (VCC/VPC) can be admitted (allowed to be set up), based on the
available connection resources and requested traffic characteristics.
•
Logical interface creation and deletion.
•
Private Network-Network Interface (PNNI) metrics—resource management supplies PNNI with
link metrics for connection routing.
Switch Fabric Functionality (Catalyst 8540 MSR)
The switch fabric for the Catalyst 8540 MSR provides the required ATM Forum Traffic Management
features as described in
Table 9-1
.
Table 9-1
Switch Processor Feature Card
Feature
Description
Traffic classes:
CBR
1
, VBR-RT
2
, VBR-NRT
3
, UBR
4
, ABR
5
(EFCI)
6
Output queuing
Per-VC or per-VP
Output scheduling
RS
7
and WRR
8
Intelligent early packet discard
Multiple dynamic thresholds
Intelligent tail (partial) packet
discard
Supported
Selective cell marking and
discard
Multiple, weighted, dynamic thresholds
