Cisco 2811 - Voice Security Bundle Router Manual page 48

Cisco 2900 Series
Platform Architecture and Modularity
The Cisco 2900 Series is architected to meet the application demands of today's branch offices with
design flexibility for future applications. The modular architecture is designed to support increasing
bandwidth requirements, time-division multiplexing (TDM) interconnections, and fully integrated power
distribution to modules supporting 802.3af Power over Ethernet (PoE) and Cisco Enhanced PoE (ePoE).
Architectural Feature Description
Modular Platform • The Cisco 2900 Series ISRs are highly modular platforms with several
types of module slots to add connectivity and services for varied
branch-office network requirements.
• The ISRs offer an industry-leading breadth of LAN and WAN
connectivity options through modules to accommodate field
upgrades for future technologies without requiring a platform
replacement.
Processors • The Cisco 2900 Series are powered by high-performance multi-core
processors that can support the growing demands of high-speed
WAN connections to the branch-office while also running multiple
concurrent services.
Embedded IP Security with Security • Embedded hardware encryption acceleration is enhanced to provide
Sockets Layer (IPsec/SSL) VPN higher scalability, which combined with an optional Cisco IOS
Security license, enables WAN link security and VPN services (both
Hardware Acceleration
IPsec and SSL acceleration).
• The onboard encryption hardware replaces and outperforms the
advanced integration modules (AIMs) of previous generations.
Multigigabit Fabric (MGF) • The Cisco 2900 Series introduces an innovative multigigabit fabric
(MGF) that allows for efficient module-to-module communication,
enabling tighter services interactions across modules while reducing
the overhead on the route processor.
TDM Interconnectivity Fabric • Unified communications services in the branch office are significantly
enhanced with the use of a TDM interconnectivity fabric in the system
architecture, allowing for scaling of DS-0 channel capacity.
Integrated Gigabit Ethernet Ports • All onboard WAN ports are 10/100/1000 Gigabit Ethernet WAN
routed ports.
• One of the three 10/100/1000 Ethernet WAN ports on the Cisco
2921 and 2951 supports Small Form-Factor Pluggable (SFP)-based
connectivity in lieu of a RJ-45 port and enabling fiber connectivity.
Innovative Universal-Serial-Bus • A new, innovative USB console port offers management connectivity
(USB)-based Console Access for devices without a serial port such as modern laptop computers.
• Traditional console and auxiliary ports are also available.
Optional Integrated Power Supply for • An optional upgrade to the internal power supply provides inline
power (802.3af-compliant PoE and Cisco Inline Power) to integrated
Distribution of PoE and Universal DC
Power Supply switch modules.
• On the Cisco 2911, 2921, and 2951, an optional DC power supply will
be available in the future that extends deployment into central offices
and industrial environments.
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Platform Architecture and Modularity
Architectural Feature Description
• The Cisco 2911, 2921, and 2951 allow for power redundancy through
Optional External Redundant Power
the use of an external RPS device, thereby decreasing network
Supply (RPS)
downtime and protecting the network from power-supply failures.
• Redundant power on the Cisco 2900 Series is supported through the
Cisco RPS 2300 Redundant Power System. You can use the Cisco
RPS 2300 to provide redundant power for Cisco 2900 Series ISRs as
well as Cisco Catalyst
• In order to use the Cisco RPS 2300, an external RPS adapter is
required (configurable option) to connect the platform to the
external RPS.
PoE Boost • When connected to an external RPS device, the Cisco 2911, 2921,
and 2951 can operate in a PoE boost configuration in lieu of redundant
power mode—whereby the power capacity of the platform is
increased to twice the normal level to power additional PoE ports.
Designed for Flexible Deployments • The Cisco 2911 and 2951 are designed for NEBS environments
• The 2911 is 12 inches deep and has an optional fan filter for
deployments in a variety of environments. An assembly that provides
front-to-back airflow is also available for 23 inch racks.
Cisco 2900 Series
® switches.
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