5-6
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 5 BXM Card Sets: T3/E3, 155, and 622
BXM Capabilities
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Provides up to 16 CoSs with the following configurable parameters:
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Minimum service rate
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Maximum queue depth
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Frame discard enable
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Cell Loss Priority (CLP) High and Low thresholds
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Service priority level
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Explicit Forward Congestion Indication (EFCI) threshold
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Per VC Queuing
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Support for UBR CoS with Early Packet Discard
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Failure alarm monitoring per T1.64b
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ATM layer OAM functionality
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Congestion control mechanisms
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Self-test and diagnostic facility.
Service Types
The BXM cards support the full range of ATM service types per ATM Forum TM 4.0.
CBR Service
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Usage Parameter Control (UPC) and Admission Control
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UPC: Ingress rate monitoring and discarding per I.371 for:
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Peak Cell Rate (PCR)
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Cell Delay Variation Tolerance (CDVT)
VBR Service
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Usage Parameter Control (UPC) and Admission Control
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UPC: Ingress rate monitoring and cell tagging per ITU-T I.371 for:
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Sustained Cell Rate (SCR)
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Peak Cell Rate (PCR)
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Burst Tolerance (BT)
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CLP tagging, enabled or disabled on a per VC basis at the Ingress side
ABR Service
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Based on Virtual Source/Virtual Destination (VS/VD) per ATM Forum TM4.0
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VS/VD
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VS/VDs provide Resource Management (RM) cell generation and termination to support
congestion control loops
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A virtual connection queue (VCQ) is assigned to a VC in the ingress direction
Содержание BPX 8650
Страница 49: ...P A R T 1 The BPX Switch ...
Страница 50: ......
Страница 159: ...P A R T 2 Installation ...
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Страница 273: ...P A R T 3 Initial Configuration and Network Management ...
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Страница 311: ...P A R T 4 Configuring Connections ...
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Страница 487: ...P A R T 5 Troubleshooting and Maintenance ...
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Страница 533: ...P A R T 6 BPX Specifications ...
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Страница 555: ...P A R T 7 Appendices ...
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