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Cisco MGX 8850 Multiservice Switch Installation and Configuration
Release 1.1.31, Part Number 78-11223-03 Rev. B0, May 2005
Chapter 6 Card and Service Configuration
ATM Universal Service Module
ATM Universal Service Module
The MGX-AUSM/B-8T1 and MGX-AUSM/B-8E1 ATM Universal Service Modules (AUSMs) are eight
port multipurpose card sets for T1 or E1 lines. This section includes the following instructions for the
CLI:
• Summary of AUSM Features, page 6-16
• Configure the Card, Lines, and Ports, page 6-17
• Configure Inverse Multiplexing, page 6-20
• Adding and Configuring Connections on the AUSM/B, page 6-20
Summary of AUSM Features
The ATM Universal Service Modules (AUSM) include the following features:
• ATM UNI with high port-density for the CPE—with AUSMs in all 24 service module slots, an
MGX 8850 shelf can support up to 192 individual T1 or E1 lines. An individual card set can support
1000 data connections and 16 management connections.
• Inverse multiplexing for ATM (IMA) that complies with ATM Forum v3.0 and v3.1—the 8-port
AUSM can provide N x T1 or N x E1 logical ports up to maximum rates of 12 Mbps for T1 or
16 Mbps for E1.
• Class of service—CBR, ABR, non-real-time VBR, real-time VBR, and UBR with per-VC queuing
on ingress and multiple class of service queues on egress. ABR includes support of both ForeSight
ABR and standard ABR (TM 4.0 compliant).
• Statistics collection.
• Virtual path connections (VPCs).
• Network synchronization derived from one of its lines.
• Bit error rate test (BERT) functionality with loop back pattern generation and verification on
individual lines or logical port. For a description of the BERT functions, see the “Bit Error Rate
Testing Through an MGX-SRM-3T3” section on page 6-63.
• 1:N redundancy through the optional MGX-SRM-3T3/C card.
• Automatic card-restore.
• SNMP and TFTP to support card and connection management.
• Resource partitions for individual network control applications.
Note See the “ATM UNI Service Module (AUSM)” section on page 2-15 for additional information on the
AUSM features.