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255-700-714R11.0
A-11
PacketStar
®
PSAX 1-Port Channelized OC-3/STM-1 CES Module User Guide
, Issue 1
Release 11.0.0
Appendix A Reference Information
ATM TS, UPC, and VI Configuration Compatibilities
ATM TS, UPC, and VI Configuration Compatibilities
Configuration compatibility among the ATM Traffic Shaping, UPC Support,
and VI Support features is shown in Table A-9. In the table, Yes indicates that
the two features coinciding in the matrix can be configured in the same
interface, and No indicates that they cannot. See Figure A-1 for an illustra-
tion of this concept.
Real Time Variable Bit
Rate (VBR-rt)
VBR-express
Lower than
CBR4
Lower than CBR
Network
management
VBR-rt1
Lower than
VBR-express
Real-time video
VBR-rt2
Lower than
VBR-rt1
MPEG 1-2/JPEG
Non-Real Time Variable
Bit Rate (VBR-nrt)
VBR-nrt1
Lower than
VBR-rt2
Lower than
VBR-rt
Data
VBR-nrt2
Lower than
VBR-nrt1
Data
Guaranteed Frame Rate
(GFR)
GFR2
Lowest (shares
queue with UBR)
Lower than
VBR-nrt
Frame relay,
Ethernet, TCP
Unspecified Bit Rate
(UBR)
UBR
Lowest
Lowest
UDP
Table A-8. Mapping ATM Service Categories to PSAX System Priority Levels (Continued)
ATM Service Category
Connection
Configuration
Field Value
AQueMan Priority
(Legacy
Implementation)
ATM Forum Traffic
Management 4.1
Priority (Current
Implementation)
Service Examples
Table A-9. ATM Traffic Shaping, UPC Support, and VI Support Configuration
Compatibility
Fields on ATM UNI, PNNI, and IISP
Configuration Windows
ATM Traffic
Shaping per VC
VI Support UPC Support
ATM Traffic Shaping per VC
No
Yes
*
*
UPC support and Traffic Shaping per VC are supported on the same end-to-end
connection
only
when VI is configured on the
egress
path, and UPC on the
ingress
path.
VI Support
No
Yes
UPC Support
Yes
*
Yes