Cisco 2811 Router Guide - Page 63

Cisco 3900 Series Modularity Features and Benefits The Cisco 3900 Series provides significantly enhanced modular capabilities while maintaining investment protection for customers. Most of the modules available on previous generations of Cisco routers, such as the Cisco 3800 Series Integrated Services Routers, are supported on the Cisco 3900 Series. Additionally, modules used on the Cisco 3900 Series can easily be supported on other routers in the Cisco Integrated Services Router portfolio to provide maximum investment protection. Taking advantage of common interface cards across a network greatly reduces the complexity of managing inventory requirements, implementing large network rollouts, and maintaining configurations across a variety of branch-office sizes. A complete list of supported modules, including a list of supported SFPs for the Cisco 3900 Series, is available at: http://www.cisco.com/go/3900 Architectural Features Cisco Services Performance Engine (SPE) Cisco Service Module Description • Both the Cisco 3925 and Cisco 3945 offer a field-replaceable Services Performance Engine (SPE)-an option available on the Cisco 3900 Series only. The SPE is a modular motherboard that will be upgradable with higher-performance engines developed in the future. • This engine protects your initial investment in the Cisco 3900 platform for a longer time period and scales router performance as your network and branch-office needs grow. • A service module slot replaces the network module and the extension module for voice/fax (EVM) slots and is offered on Cisco 3925, 3945 Integrated Services Routers. • Each service-module slot offers high data-throughput capability: - Up to 4 Gbps aggregate toward the router processor - Up to 2 Gbps aggregate to other module slots over the MGF • Service module (SM) slots are highly flexible with support for double-wide service modules (SM-D's), which are Service Modules that require two SM slots. SM-Ds in the Cisco 3925 and 3945 provide flexibility for higher-density modules. • Service-module slots provide twice the power capabilities relative to the network-module slots, allowing flexibility for higher-scale and betterperformance modules. • An adapter module enables backward compatibility with existing network modules, enhanced network modules ((NMEs), and EVMs. • Power to service-module slots can be managed by extensions similar to the Cisco EnergyWise framework, so your organization can reduce energy consumption in your network infrastructure. Full Cisco EnergyWise support will be available in future software releases. 122 Cisco 3900 Series Modularity Features and Benefits continued Architectural Features Description Cisco Enhanced High • The EHWIC slot replaces the high-speed WAN interface card (HWIC) Speed WAN Interface Card slot and can natively support HWIC, WAN interface cards (WICs), voice (EHWIC) interface cards (VICs), and voice/WAN interface cards (VWIC). • Four integrated EHWIC slots on the Cisco 3925 and 3945 allow for more flexible configurations. • Each HWIC slot offers high-data-throughput capability: - Up to 1.6 Gbps aggregate toward the router processor - Up to 2 Gbps aggregate to other module slots over the MGF • Flexibility to support doublewide modules is enabled by combining two EHWIC slots. Up to 2 doublewide HWIC (HWIC-D) modules are supported. Cisco Internal Services Module (ISM) • A single ISM slot provides flexibility to integrate intelligent services modules that do not require interface connections. • Each ISM slot offers high-data-throughput capability: - Up to 4 Gbps aggregate toward the router processor - Up to 2 Gbps aggregate to other module slots over the MGF • The ISM replaces the AIM slot; existing AIM modules are not supported in the ISM slot. • Power to ISM slots can be managed by extensions similar to the Cisco EnergyWise framework, so your organization can reduce energy consumption in your network infrastructure. Full EnergyWise support will be available in future software releases. Cisco High-Density Packet Voice Digital Signal Processor (DSP) Module (PVDM3) Slots on Motherboard • PVDM3 slots natively support PVDM3 modules, providing support for richer density for rich-media voice and video. • Each PVDM3 slot connects back to the system architecture through a 2-Gbps aggregate link through the MGF. • Investment protection for PVDM2 modules is supported through an adapter module. • Power to the PVDM slots can be managed by extensions similar to the Cisco EnergyWise framework, so your organization can reduce energy consumption in your network infrastructure. Full EnergyWise support will be available in future software releases. Compact Flash Slots • Two external Compact Flash slots are available on the Cisco 3900 Series Integrated Services Routers. Each slot can support high-speed storage densities upgradable to 4 GB in density. USB 2.0 Ports • Two high-speed USB 2.0 ports are supported. The USB ports support secure token capabilities and storage 123