Chapter 1 Overview Of Cisco 4000 Series Isrs - Cisco 4000 Series Hardware Installation Manual

Overview of Cisco 4000 Series ISRs
Cisco 4000 Series Integrated Services Routers (ISRs) are modular routers with LAN and WAN
connectivity. They support several interface modules, including Cisco Enhanced Service Modules
(SM-X) and Cisco Network Interface Modules (NIMs).
Cisco 4000 Series ISRs target these applications:
Enterprise applications—Intended for mid-size aggregation and gateway router that is located in a
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regional or large branch office:
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Service provider applications—Intended for high-end Enterprise Branch environments:
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Cisco 4000 Series ISRs are available in these models:
Cisco 4461 ISR
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Cisco 4451-X ISR
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Cisco 4431 ISR
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Cisco 4351 ISR
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Cisco 4331 ISR
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Cisco 4321 ISR
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Cisco 4221 ISR
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For more information on the features and specifications of Cisco 4000 Series Integrated Services Routers
(ISRs), refer to the
Sections in this documentation apply to all models of Cisco 4000 Series ISRs unless a reference to a
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specific model is made explicitly.
OL-32185-02
WAN aggregation at Cisco Enterprise core
Internet gateway
Branch or regional office aggregation
Remote access aggregation
High-end customer premises equipment (CPE) for business-quality Internet access
Service provider leased line aggregation
Provider edge (PE) and high-end customer edge (CE) for Layer 2 VPN or Layer 3 VPN services
Low-end Ethernet aggregation
Cisco 4000 Series Integrated Services Routers datasheet.
Hardware Installation Guide for the Cisco 4000 Series Integrated Services Router
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