Details
Secure Network Connectivity for Data, Voice, and Video
Converged IP Communications
Wireless Services
Wi-Fi Hotspot services for public access, wireless infrastructure services for cordless WLAN telephony and for larger sites, and land mobile radio over IP for radio users.
Integrated Services
Applications
Secure Network Connectivity with Converged IP Communications
Figure 2. Secure Network Connectivity with Converged IP Communications

Architecture-Features and Benefits
Table 1. Architecture-Features and Benefits
Feature |
Benefit |
Modular Architecture |
• A wide variety of LAN and WAN options are available. Network interfaces can be upgraded in the field to accommodate future technologies.
• Several types of slots are available to add connectivity and services in the future on an "integrate-as-you-grow" basis.
• The Cisco 2800 supports more than 90 modules, including WICs, VICs, network modules, PVDMs, and AIMs (Note: the Cisco 2801 router does not support network modules).
|
Embedded Security Hardware Acceleration |
• Each of the Cisco 2800 Series routers comes standard with embedded hardware cryptography accelerators, which when combined with an optional Cisco IOS Software upgrade help enable WAN link security and VPN services.
|
Integrated Dual Fast Ethernet or Gigabit Ethernet Ports |
• The Cisco 2800 Series provide two 10/100 on the Cisco 2801 and Cisco 2811 and two 10/100/1000 on the Cisco 2821 and Cisco 2851
|
Support for Cisco IOS Software |
• The Cisco 2800 helps enable end-to-end solutions with full support for the latest Cisco IOS Software-based QoS, bandwidth management, and security features.
• Common feature and command set structure across the Cisco 1700, 1800, 2600, 2800, 3700 and 3800 series routers simplifies feature set selection, deployment, management, and training.
|
Optional Integrated Power Supply for Distribution of Power Over Ethernet (PoE) |
• An optional upgrade to the internal power supply provides in-line power (802.3af-compliant Power-over-Ethernet [PoE] and Cisco standard inline power) to optional integrated switch modules.
|
Optional Integrated Universal DC Power Supply |
• On the Cisco 2811, 2821, and 2851 routers an optional DC power supply is available that extends possible deployments environments such as central offices and industrial environments (Note: not available on the Cisco 2801).
|
Integrated Redundant-Power-Supply (RPS) Connector |
• On the Cisco 2811, 2821, and 2851 there is a built in external power-supply connector that eases the addition of external redundant power supply that can be shared with other Cisco products to decrease network downtime by protecting the network components from downtime due to power failures.
|
Modularity-Features and Benefits
Table 2. Modularity-Features and Benefits
Feature |
Benefit |
Enhanced Network-Module (NME) Slots |
• The NME slots support existing network modules (Note: NM and NME support on Cisco 2811, 2821, and 2851 only)
• NME Slots offer high data throughput capability (up to 1.6Gbps) and support for Power over Ethernet (POE).
• NME slots are highly flexible with support for extended NMEs (NME-X on Cisco 2821 and 2851 only) and enhanced double-wide NMEs (NME-XDs) (Note: Cisco 2851 only).
|
High-Performance WIC (HWIC) Slots with Enhanced Functionality |
• Four integrated HWIC slots on Cisco 2811, 2821, and 2851 and two integrated HWIC slots on Cisco 2801 allow for more flexible and dense configurations.
• HWICs slots can also support WICs, VICs, and VWICs
• HWIC slots offer high data throughput capability (up to 400 Mbps half duplex or 800 Mbps aggregate throughput) and Power over Ethernet (POE) support.
• A flexible form factor supports up to two double-wide HWIC (HWIC-D) modules.
|
Dual AIM Slots |
• Dual AIM slots support concurrent services such as hardware-accelerated security, ATM segmentation and reassembly (SAR), compression, and voice mail (Refer to Table 7 for more details on specific platform support).
|
Packet Voice DSP Module (PVDM) Slots on Motherboard |
• Slots for Cisco PVDM2 Modules (DSP Modules) are integrated on the motherboard, freeing slots on the router for other services.
|
Extension-Voice-Module (EVM) Slot |
• The EVM supports additional voice services and density without consuming the network-module slot (Note: available only on Cisco 2821 and 2851).
|
USB Support |
• Up to two USB ports are available per Cisco 2800 series router. The routers' Universal Serial Bus (USB) ports enable important security and storage capabilities.
|
Secure Networking-Feature and Benefits
Table 3. Secure Networking-Feature and Benefits
Feature |
Benefit |
Cisco IOS Software Firewall |
Sophisticated security and policy enforcement provides features such as stateful, application-based filtering (context-based access control), per-user authentication and authorization, real-time alerts, transparent firewall, and IPv6 firewall. |
Secure Sockets Layer (SSL) |
SSL provides security for web transactions by handling authentication, data enryption and digital signatures. The 2800 Series supports SSL VPNs and SSL acceleration via the AIM-VPN/SSL-3. |
Onboard VPN Encryption Acceleration |
The Cisco 2800 Series supports IPSec Digital Encryption Standard (DES), Triple DES (3DES), Advanced Encryption Standard (AES) 128, AES 192, and AES 256 cryptology without consuming an AIM slot. |
Network Admissions Control (NAC) |
A Cisco Self-Defending Network initiative, NAC seeks to dramatically improve the ability of networks to identify, prevent, and adapt to threats by allowing network access only to compliant and trusted endpoint devices. |
Multiprotocol Label Switching (MPLS) VPN Support |
The Cisco 2800 Series supports specific provider edge functions plus a mechanism to extend customers' MPLS VPN networks out to the customer edge with virtual routing and forwarding (VRF) firewall and VRF IPSec. For details on the MPLS VPN support on the different versions of the Cisco 2800 Series, please check the feature navigator tool on http://www.cisco.com. |
USB eToken Support |
USB eTokens from Aladdin Knowledge Systems (available at http://www.aladdin.com/etoken/cisco/) provides secure configuration distribution and allows users to store VPN credentials for deployment |
AIM-Based Security Acceleration |
Support for an optional dedicated security AIM can deliver 2 to 3 times the performance of embedded encryption capabilities with Layer 3 compression. |
Intrusion Prevention System (IPS) |
Flexible and high performance support is offered through Cisco IOS® Software or an intrusion-detection-system (IDS) network module. The ability to load and enable selected IDS signatures in the same manner as Cisco IDS Sensor Appliances |
Advanced Application Inspection and Control |
Cisco IOS Firewall includes HTTP and several email inspection engines that can be used to detect misuse of port 80 and email connectivity. |
Cisco Easy VPN Remote and Server Support |
The Cisco 2800 Series eases administration and management of point-to-point VPNs by actively pushing new security policies from a single headend to remote sites. |
Dynamic Multipoint VPN (DMVPN) |
DMVPN is a Cisco IOS Software solution for building IPSec + generic routing encapsulation (GRE) VPNs in an easy and scalable manner. |
Group Encrypted Transport (GET) VPN |
GET VPN is a Cisco IOS Software solution that simplifies securing large Layer 2 or MPLS networks requiring partial or full-mesh connectivity by providing tunnel-less VPN connectivity. |
URL Filtering |
URL filtering is available onboard with an optional content-engine network module or external with a PC server running the URL filtering software. |
Cisco Router and Security Device Manager (SDM) |
This intuitive, easy-to-use, Web-based device-management tool is embedded within the Cisco IOS Software access routers; it can be accessed remotely for faster and easier deployment of Cisco routers for both WAN access and security features. |
IP Telephony Support-Features and Benefits
Table 4. IP Telephony Support-Features and Benefits
Feature |
Benefit |
IP Phone Support |
Optional support for Cisco in-line power distribution to Ethernet switch network modules and HWICs can be used to power Cisco IP phones. |
EVM Module Slots |
Extension Voice Module Slots, available only on the Cisco 2821 and Cisco 2851, provide support for the Cisco High-Density Analog and Digital Extension Module for Voice and Fax, providing support for up to 24 total voice and fax sessions without consuming a Network Module Slot. |
PVDM (DSP) Slots on Motherboard |
DSP (PVDM2) modules deliver support for analog and digital voice, conferencing, transcoding, and secure Real-Time Transport Protocol (RTP) applications. |
Integrated Call Processing |
Cisco CME is an optional solution embedded in Cisco IOS Software that provides call processing for Cisco IP phones. Cisco CME delivers telephony features similar to those that are commonly used by business users to meet the requirements of the small to medium-sized offices. |
Integrated Voice Mail |
Support for up to a 250 mailboxes using the Cisco Unity® Express voice messaging system is possible with the integration of an optional voice-mail AIM or network module. |
Broad Range of Voice Interfaces |
Interfaces for public switched telephone network (PSTN), private branch exchange (PBX), and key system connections include FXS; FXO; analog direct inward dialing (DID); ear and mouth (E&M); Centralized Automated Message Accounting (CAMA); ISDN Basic Rate Interface (BRI); and T1, E1, and J1 with ISDN Primary Rate Interface (PRI); QSIG; E1 R2; and several additional channel-associated-signaling (CAS) signaling schemes. |
Survivable Remote Site Telephony (SRST) |
Branch offices can take advantage of centralized call control while cost-effectively providing local branch backup using SRST redundancy for IP telephony. |
Wireless Support-Features and Benefits
Table 5. Wireless Support-Features and Benefits
Feature |
Benefit |
WLAN Connectivity |
• The 802.11b/g or 802.11a/b/g HWIC access point interface card can be used to provide integrated WLAN connectivity to mobile clients at sites requiring a single access point, resulting in mobility and enhanced productivity for users.
• Dual RP-TNC connectors enable diversity and allow for optimum coverage through the use of external antennas.
|
Wireless Infrastructure Services |
• Telephony support for wired and WLAN IP phones is delivered by Cisco CallManager Express (CCME) or by Survivable Remote Site Telephony (SRST) with Cisco CallManager. Cordless WLAN IP phones allow users to be mobile and more productive.
• Integrated switch modules with Power over Ethernet (POE) enable support for Cisco Aironet access points (for larger sites) as well as wired IP phones.
• Mobility for clients from WLAN to cellular networks is enabled by Mobile IP home agent support.
• IEEE 802.1x local authentication using LEAP provides enhanced reliability through survivable authentication for WLAN clients during WAN failures.
• Customizable guest access is enabled with the service selection gateway features, along with the Subscriber Edge Services Manager.
|
Land Mobile Radio Over IP |
• LMR over IP support allows radio users (e.g., security personnel, maintenance personnel, police officers, etc.) to communicate via IP with phone and PC users, delivering improved communications and productivity.
|
Wi-Fi Hotspot Services |
• The access zone router and service selection gateway services features can be used to deploy secure public WLAN access services with an integrated HWIC-AP for small sites or with Cisco Aironet access points for larger sites. Wi-Fi hotspot services can be offered for additional revenue for public locations (e.g., restaurants, hotels, airports, etc.) or a value-added service for customer satisfaction.
|
Cost of Ownership and Ease of Use-Features and Benefits
Table 6. Cost of Ownership and Ease of Use-Feature and Benefits
Feature |
Benefit |
Integrated Channel Service Unit/Data Service Unit (CSU/DSU), Add/Drop Multiplexers, Firewall, Modem, Compression, and Encryption |
Consolidates typical communications equipment found in branch-office wiring closets into a single, compact unit; this space-saving solution provides better manageability |
Optional Network Analysis Module |
Provides application-level visibility into network traffic for troubleshooting, performance monitoring, capacity planning, and managing network-based services (Note: Cisco 2811, 2821, and 2851 only) |
Cisco IOS IP Service Level Agreements (IP SLAs) |
With Cisco IOS IP SLAs, users can verify service guarantees, increase network reliability by validating network performance, proactively identify network issues, and increase Return on Investment (ROI) by easing the deployment of new IP services |
Cisco IOS Software Warm Reboot |
Reduces system boot time, and decreases downtime caused by Cisco IOS Software reboots (Cisco 2811, 2821 and 2851) |
Enhanced Setup Feature |
Optional setup wizard with context-sensitive questions guides the user through the router configuration process, allowing faster deployment |
CiscoWorks Support |
Offers advanced management and configuration capabilities through a Web-based GUI |
Cisco AutoInstall |
Configures remote routers automatically across a WAN connection to save cost of sending technical staff to the remote site |
Cisco IOS Embedded Event Manager (EEM) |
Enables automation of many network management tasks and directs the operation of Cisco IOS to increase availability, collect information, and notify external systems or personnel about critical events |
Summary and Conclusion
Product Specifications
Table 7. Chassis Specifications
Cisco 2800 Series |
Cisco 2801 |
Cisco 2811 |
Cisco 2821 |
Cisco 2851 |
|
Product Architecture |
|||||
DRAM |
• Default: 128 MB
• Maximum: 384 MB
|
• Default: 256 MB
• Maximum: 768 MB
|
• Default: 256 MB
• Maximum: 1 GB
|
||
Compact Flash |
• Default: 64 MB
• Maximum: 128MB
|
• Default: 64 MB
• Maximum: 256 MB
|
|||
Fixed USB 1.1 Ports |
1 |
2 |
|||
Onboard LAN Ports |
2-10/100 |
2-10/100/1000 |
|||
Onboard AIM (Internal) Slot |
2 |
||||
Interface Card Slots |
• 4 slots; 2 slots support HWIC, WIC, VIC, or VWIC type modules
• 1 slot supports WIC, VIC, or VWIC type modules
• 1 slot supports VIC or VWIC type modules
|
4 slots, each slot can support HWIC, WIC, VIC, or VWIC type modules |
|||
Network-Module Slot |
No |
1 slot, supports NM and NME type modules |
1 slot, supports NM, NME and NME-X type modules |
1 slot, supports NM, NME, NME-X, NMD and NME-XD type modules |
|
Extension Voice Module Slot |
0 |
1 |
|||
PVDM (DSP) Slots on Motherboard |
2 |
3 |
|||
Integrated Hardware-Based Encryption |
Yes |
||||
VPN Hardware Acceleration (on Motherboard) |
DES, 3DES, AES 128, AES 192, and AES 256 |
||||
Optional Integrated In-Line Power (PoE) |
Yes, requires AC-IP power supply |
||||
Console Port |
1 |
||||
Auxiliary Port |
1 |
||||
Minimum Cisco IOS Software Release |
12.3(8)T |
||||
Rack Mounting |
Yes, 19-inch |
Yes, 19- and 23-in. options |
|||
Wall Mounting |
No |
Yes |
No |
No |
|
Power Requirements |
|||||
AC Input Voltage |
100 to 240 VAC, autoranging |
||||
AC Input Frequency |
47-63 Hz |
||||
AC Input Current |
2A (110V) 1A (230V) |
3A (110V) 2A (230V) |
|||
AC Input Surge Current |
50A maximum, one cycle (-48V power included) |
||||
AC-IP Maximum In-Line Power Distribution |
120W |
160W |
240W |
360W |
|
AC-IP Input Current |
4A (110V) 2A (230V) |
8A (110V) 4A (230V) |
|||
AC-IP Input Surge Current |
50A maximum, one cycle (-48V power included) |
||||
DC Input Voltage |
No DC Power Option available |
24 to 60 VDC, autoranging positive or negative |
|||
DC Input Current |
• No DC Power Option available
|
• 8A (24V)
• 3A (60V)
• Startup current 50A<10 ms
|
• 12A (24V)
• 5A (60V)
• Startup current 50A<10 ms
|
||
Typical Power Dissipation (No Modules) |
42W (143 BTU/hr) |
32W (109 BTU/hr) |
54W (184 BTU/hr) |
58W (197 BTU/hr) |
|
Power Dissipation-AC without IP Phone Support |
150W (511 BTU/hr) |
170W (580 BTU/hr) |
280W (955 BTU/hr) |
280W (955 BTU/hr) |
|
Power Dissipation-AC with IP Phone Support-System Only |
150W (511 BTU/hr) |
210W (717 BTU/hr) |
310W (1058 BTU/hr) |
370W (1262 BTU/hr) |
|
Power Dissipation-AC with IP Phone Support-IP Phones |
180W (612 BTU/hr) |
160W (546 BTU/hr) |
240W (819 BTU/hr) |
360W (1128 BTU/hr) |
|
Power Dissipation-DC |
Not applicable |
180W (614 BTU/hr) |
300W (1024 BTU/hr) |
300W (1024 BTU/hr) |
|
RPS |
No |
External only, connector for RPS provided by default |
|||
Recommended RPS Unit |
No RPS option |
Cisco RPS-2300 Redundant Power System |
|||
Environmental Specifications |
|||||
Operating Temperature |
32° to 104°F (0° to 40°C) |
||||
Non-Operating Temperature |
-4° to 149°F (-20° to 65°C) |
-40° to 158°F (-40° to 70°C) |
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Maximum Operating Temperature at Altitude |
• 40°C @ sea level
• 31°C @ 6,000 ft
(1800 m) • 25°C @ 10,000 ft (3000 m)
Note: Derate 1.5°C per 1000 ft |
• 40°C @ sea level
• 40°C @ 6,000 ft
(1800 m) • 30°C @ 13,000 ft (4000 m)
• 27.2°C @ 15,000 ft (4600 m)
Note: Derate 1.4°C per 1,000 ft above 6,000 ft |
|||
Operating Humidity |
10 to 85% RH non-condensing |
5 to 85%RH, non-condensing |
|||
Dimensions (H x W x D) |
• 1.72 x 17.5 x 16.5 in.
• (43.7 x 445 x 419 mm)
|
• 1.75 x 17.25 x 16.4 in.
• (44.5 x 438.2 x 416.6 mm)
|
• 3.5 x 17.25 x 16.4 in.
• (88.9 x 438.2 x 416.6 mm)
|
||
Rack Height |
1 rack unit (1RU) |
2RU |
|||
Weight (Fully Configured) |
13.7 lb (6.2 kg) |
14 lb (6.4 kg) |
25 lb (11.4 kg) |
||
Noise Level (Min/Max) |
• 39 dBA for normal operating temperature (<90°F/32.2°C)
• 53.5 dBA (@ maximum fan speed)
|
• 47 dBA for normal operating temperature (<90°F/32.2°C)
• 57 dBA (@ maximum fan speed)
|
• 44 dBA for normal operating temperature (<90°F/32.2°C)
• 53 dBA (@ maximum fan speed)
|
Additional Information
SKU | C2851VATM4T1E1E-RF |
---|---|
Weight (Kg) | 1 |
Datasheet URL | http://www.cisco.com/c/en/us/products/collateral/routers/7301-router/product_data_sheet09186a008014611a.html |
Condition | Refresh |
Router Series | 2800 Series |
Chassis Type | Modular |
Rack Mountable | Yes |
Built In Ports | 2 |
Port Speed | 1 Gbps |
Port Type | RJ45 & Fiber |