User guide
3-5
Cisco Media Gateway Manager 5.0 User Guide
OL-5461-02
Chapter 3 Planning the Network
What Network Elements Are Available to a Network Planner?
The Cisco RPM-PR is a double-height line card, which connects to the MGX midplane through an
internal OC-6 ATM cell bus. The Cisco RPM-PR supports up to two single-height back cards: four-port
Ethernet and one-port Fast Ethernet.
The RPM-PR provides the following features:
• High performance
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Over 350,000 pps forwarding
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Up to 512 MB DRAM
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32 MB Flash memory
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Support for 2000 virtual interfaces
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Single bit repair and double/triple bit detection ECC support for DRAM
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1:N redundancy
• Robust IP support
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Border Gateway Protocol Version 4 (BGP4)
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Open Shortest Path First (OSPF) Protocol
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Routing Information Protocol (RIP) Versions 1 and 2
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Interior Gateway Routing Protocol (IGRP)
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Enhanced IGRP (EIGRP)
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Intermediate System-to-Intermediate System (IS-IS)
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Static routes
3.2.7 Cisco AXSM Broadband ATM Switch Module
The Cisco AXSM Broadband ATM Switch Module in combination with the high-capacity PXM-45
processor and XM-60 switching module delivers connectivity from T3/E3 to OC-48c/STM-16. The
Cisco MGX 8880 and Cisco MGX 8850 Multiservice Switch can accommodate a total of 12 AXSM
modules to provide the high broadband densities required by service providers.
The AXSM architecture, combined with PXM-45 and RPM, provides ATM networking features such as
such as Private Network-Network Interface (PNNI), switched virtual circuit/path (SVC/SVP), soft
permanent virtual circuit/path (SPVC/SPVP), and MPLS.
The AXSM module gives carrier-class availability by providing hot-standby 1:1 card redundancy with
Y-cable as well as redundancy with SONET/SDH automatic protection switching (APS). The AXSM
module with its large connection count is highly scalable for aggregation applications.
The AXSM Broadband ATM Switching Module provides the following features:
• ATM capability up to OC-48c/STM-16.
• High scalability in interface speeds with T3/E3 ports, OC-3c/STM-1, OC-12c/STM-4, and OC-48c/
STM-16 AXSM modules. Each port on the AXSM can be configured for either trunk or access
applications.
• Module port densities of 16 T3/E3 ports, 16 OC-3c/STM-1 ports, 4 OC-12c/STM-4 ports, and 1
OC-48c/ STM-16 port that can scale up to 12 OC-48c/STM-16 modules in each Cisco MGX 8880
and Cisco MGX 8850 Multiservice Switch. Each OC-48c/STM-16 provides nonblocking, full
duplex throughput, in which a connection can occupy the entire line rate.