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CISCO2821
Cisco 2821 router 2821 w/ AC PWR, 2GE, 4HWICs, 3PVDM, 1NME-X...
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CISCO2821 is a robust, modular enterprise router built to address branch connectivity needs with a fixed chassis design that supports integrated services such as voice and basic security. Designed with dual power supply options powered by an AC power supply and featuring two built‐in Fast Ethernet (10/100) ports along with serial WAN interfaces, it offers flexible WAN/LAN connectivity and modular expansion through EHWIC slots to add additional interfaces as required.
CISCO2821 delivers integrated VPN capabilities via IPSec, proven firewall functionality, and efficient packet processing performance for data and voice applications. Its architecture emphasizes targeted throughput for branch office use, redundancy in critical areas where applicable, and the ability to support a range of official routing protocols and remote management options in secure, managed environments.
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 CISCO2821 |  CISCO2801 |  C2801-VSEC-SRST/K9 |  CISCO2811-SEC/K9 |  CISCO2801-V/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Fixed | Fixed | Modular | Modular |
| Broadband | N/A | N/A | N/A | N/A | N/A |
| Built-in Security Features | Firewall | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention |
| Compliance Standards | IEEE 802.3 / IEEE 802.3u | FCC / CE / RoHS | FCC, CE | FCC, CE | FCC / CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 11.3 inches | N/A | 14.1 inches | 15.7 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | FCC Part 15 | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | EHWIC | EHWIC / NIM | EHWIC | EHWIC / NIM | EHWIC |
| Features | VPN / IPv6 Compatible / Firewall / Voice | VPN / VoIP / IPv6 Compatible / Firewall | VPN / VoIP / IPv6 Compatible / Firewall | VPN / Firewall / IPv6 Compatible | VPN / IPv6 Compatible / Firewall |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 128 MB | 128 MB | 128 MB |
| Form Factor | Rack-mount | Desktop / Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.8 inches | N/A | 2.2 inches | 3.5 inches | N/A |
| High Availability Support | Not Supported | Not Supported | Not Supported | Not Supported | Supported |
| Integrated Services | Voice | Voice / Video | Voice | Voice / Video / WAN Optimization | Voice / Video |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | N/A | 2 LAN Ports | 4 LAN Ports | Modular LAN | 2 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 512 MB | 256 MB | 128 MB | 256 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4 / IPv6 | IPv4 / IPv6 | IPv4, IPv6, TCP/IP | IPv4, IPv6, OSPF, EIGRP, RIP, BGP | IPv4 / IPv6 |
| Power | 60W | 85 W | 65W | 65 Watts | 80 W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco 2821 Integrated Services Router | Cisco 2801 Integrated Services Router | Cisco C2801-VSEC-SRST/K9 | Cisco 2811 Integrated Services Router Secure (CISCO2811-SEC/K9) | Cisco 2801 Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Integrated Services Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | Telnet / SSH / SNMP | Telnet / SSH / SNMP | Telnet, SSH, SNMP | Telnet, SSH, SNMP | CLI / SNMP / Telnet / SSH |
| Routing Protocols | OSPF / EIGRP / BGP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / BGP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | UL/cUL | N/A |
| Speed/Capacity | N/A | N/A | N/A | N/A | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | N/A | 0.075 Gbps | 0.075 Gbps | N/A | 0.02 Gbps |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise | Enterprise |
| VPN Support | IPSec | IPSec / DMVPN | IPSec / SSL VPN / DMVPN | IPSec | IPSec / SSL VPN / DMVPN |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | Modular WAN |
| Weight | 10.3 lbs | N/A | 17.6 lbs | 17.5 lbs | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.3 inches | N/A | 17.2 inches | 17.5 inches | N/A |
| Wireless Support | No | No | No | No | No |
Reliable branch router with solid performance. Handles routing and voice workloads smoothly and has proven stable in daily enterprise use.
A dependable Cisco router for business networks. Easy to integrate and delivers consistent uptime.
Strong all around performance for branch offices. Configuration was straightforward and reliability has been excellent.
Cisco quality shows in long term use. Predictable performance and stable hardware.
Well suited for mixed voice and data environments. Performs exactly as expected.
The Cisco 2821 router is a modular branch office platform offering dual Gigabit Ethernet ports, four HWIC slots, and advanced routing capabilities powered by the IP Base software image for secure, scalable WAN connectivity.
This router includes 128 MB flash, 512 MB DRAM, four HWIC slots, a Network Module Expansion (NME-X) slot, two Advanced Integration Module (AIM) slots, three PVDM slots, and integrated AC power support.
The Cisco 2821 provides two built-in Gigabit Ethernet ports for high-speed LAN and WAN connectivity, ensuring reliable performance for data-intensive applications.
The router ships with 512 MB of DRAM for efficient packet processing and 128 MB of onboard flash memory for Cisco IOS image storage and configuration files.