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C2821-H-VSEC/K9
2821H.Perf.VSEC:AIM-VPN2/SSL,PVDM2,CCME/SRST,AIS,256F/512D
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C2821-H-VSEC/K9 is a high‑security, modular enterprise router designed to deliver robust performance with integrated services for voice, video, and data. Built on a modular architecture with flexible power options via an AC power supply, it provides versatile WAN/LAN connectivity with dual WAN ports and an embedded four‐port LAN configuration, making it ideal for secure branch connectivity.
Engineered to support advanced VPN features and a suite of integrated security and firewall functions, this router excels in throughput capacity and redundancy for mission‑critical environments. Optimized for enterprise use cases, it offers high availability, modular expansion via NIM slots, and reliable performance for secure, multi‑service applications.
C2821-H-VSEC/K9 price is $3,765.00, a 54.6% saving from the Cisco list price of $8,295.00. C2821-H-VSEC/K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C2821-H-VSEC/K9 for additional pricing. Browse the full Router Isr 2800 series or explore all Cisco products.
In a multi-site enterprise rolling out sensitive customer portals, the C2821-H-VSEC/K9 leverages AIM-VPN2/SSL and 256F/512D hardware encryption to establish IPsec tunnels between HQ and 15 branch offices. By offloading crypto operations to dedicated silicon, the router maintains wire-speed throughput for critical applications while ensuring FIPS-compliant data confidentiality. Benefit: centralized policy enforcement, sub-millisecond VPN failover and a 40% reduction in WAN security appliance costs.
A healthcare network with over 500 staff requires uninterrupted voice and video calling even during WAN outages. The C2821-H-VSEC’s PVDM2 DSP modules handle high-density codec transcoding, while on-board CCME/SRST automatically shifts call processing to local mode if primary CallManager is unreachable. Benefit: zero-touch failover for IP telephony, 99.999% voice uptime and streamlined compliance with HIPAA-mandated continuity.
A financial services firm implements the C2821-H-VSEC’s AIS intrusion prevention and deep packet inspection to inspect Layer 7 traffic across its datacenter edge. Combined with 512D of firewall sessions, the router detects and blocks SQL injection, brute-force SSH and malware before they reach critical servers. Benefit: real-time threat mitigation, 60% fewer false positives and simplified audit reporting under PCI DSS.
To get the detailed certification, please go to the Compliance Center.
 C2821-H-VSEC/K9 |  CISCO2811 |  CISCO2801 |  CISCO2811-ADSL2/K9 |  CISCO2851-DC | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Fixed | Modular | Fixed |
| Broadband | N/A | N/A | N/A | DSL | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | RoHS / FCC | FCC / CE / IC | FCC / CE / RoHS | RoHS / FCC / CE | FCC / CE / UL |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | N/A | N/A | N/A | 15.2 inches | 15.2 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | NIM | EHWIC / NIM | EHWIC / NIM | EHWIC | EHWIC |
| Features | VPN / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall / VoIP | VPN / VoIP / IPv6 Compatible / Firewall | VPN / Firewall / IPv6 Compatible | VPN / VoIP / IPv6 Compatible / Firewall |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 128 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Desktop / Rack-mount | Rack-mount / Desktop | Rack-mount |
| Height | N/A | N/A | N/A | 1.75 inches | 1.73 inches |
| High Availability Support | Supported | Supported | Not Supported | Not Supported | Supported |
| Integrated Services | Voice / Video | Voice / Video / WAN Optimization | Voice / Video | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45 / SFP |
| LAN Ports | 4 LAN Ports | Modular LAN | 2 LAN Ports | Modular LAN | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 256 MB | 512 MB | 256 MB | 512 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 3+ Slots | 2 Slots |
| Network Protocols | IPv4 / IPv6 | IPv4 / IPv6 | IPv4 / IPv6 | IP / TCP / UDP / ICMP | IP, TCP, UDP, ICMP |
| Power | 100 W | 150W | 85 W | 150W | 60W |
| Power Source | AC Power Supply | AC Power Supply / Redundant | AC Power Supply | AC Power Supply | DC Power Supply |
| Product Name | Cisco C2821-H-VSEC/K9 | Cisco 2811 Integrated Services Router | Cisco 2801 Integrated Services Router | CISCO2811-ADSL2/K9 | CISCO2851-DC Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | HTTP / CLI / SNMP | CLI / Telnet / SNMP / SSH | Telnet / SSH / SNMP | Telnet / SSH | Telnet / SSH |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | N/A | N/A |
| Speed/Capacity | Gigabit | N/A | N/A | N/A | Gigabit |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.075 Gbps | 30 Mbps | 0.075 Gbps | 0.075 Gbps | 30 Mbps |
| Use Case | Enterprise | Enterprise | Enterprise | Business / Enterprise | Enterprise |
| VPN Support | IPSec / SSL VPN / DMVPN | IPSec / DMVPN | IPSec / DMVPN | IPSec | IPSec / SSL VPN / DMVPN |
| WAN Configuration | WAN | Dual WAN | Dual WAN | WAN | Dual WAN |
| WAN Ports | 2 WAN | Modular WAN | 2 WAN | 1 WAN | 2 WAN |
| Weight | N/A | N/A | N/A | 14 lbs | 23 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | N/A | 17.3 inches | 17.3 inches |
| Wireless Support | No | No | No | No | No |
Cisco 2821H VSEC ensures secure VPN/SSL and stable UC. PVDM2 with CCME/SRST provides reliable voice and data operations for medium branches.
Durable and efficient. Handles secure UC and voice endpoints with predictable performance.
Easy to deploy and manage. Maintains high-quality secure communications and UC across multiple endpoints.
Reliable Cisco solution. Supports branch offices with seamless UC, voice, and secure connectivity.
High-performing and robust. Ideal for medium offices requiring advanced security and predictable voice services.
The Cisco 2821H Integrated Services Router (C2821-H-VSEC/K9) is a modular branch router featuring AIM-VPN2/SSL, PVDM2 voice DSP, CCME/SRST survivable telephony, Advanced Inspection Services (AIS), 256 MB flash, and 512 MB DRAM for secure, high-performance connectivity.
The AIM-VPN2/SSL module delivers hardware-accelerated IPsec VPN and SSL VPN termination, supporting hundreds of simultaneous tunnels for secure remote access and site-to-site connectivity.
The PVDM2 module provides digital signal processing for voice compression, transcoding, and conferencing, enabling high-quality VoIP and Toll Quality conferencing on the 2821H router.
Cisco CallManager Express (CCME) with Survivable Remote Site Telephony (SRST) maintains local call routing and feature support during WAN outages, ensuring continuous voice services.
Advanced Inspection Services (AIS) delivers stateful application inspection and intrusion prevention, automatically detecting and blocking malicious traffic at the network edge.
This router ships with 256 MB of flash memory for IOS images and configuration files and 512 MB of DRAM to support routing, security, and voice services.
The 2821H supports multiple WAN interface cards including T1/E1, ADSL2+, serial, and Gigabit Ethernet for flexible enterprise connectivity.
Yes. You can upgrade the IOS by copying the new image to flash via TFTP/FTP/SCP and updating the boot variable in ROMMON to point to the new image.
The 2821H is ideal for branch office VPN termination, secure telephony, unified communications survivability, and perimeter security in small to medium enterprises.
With AIM-VPN2/SSL, the 2821H can support up to 250 IPsec VPN tunnels concurrently, depending on traffic load and encryption settings.
Yes. The 2821H integrates with Cisco Unified Communications Manager via the PVDM2 and CCME/SRST features for branch telephony deployments.
The C2821-H-VSEC/K9 comes with an internal universal power supply supporting 100–240 VAC; optional DC power modules are also available.
Use the Cisco IOS CLI to enable and configure protocols such as OSPF, EIGRP, and BGP under global configuration mode, then apply network statements to interfaces.
Yes. It supports comprehensive QoS features including classification, policing, shaping, and priority queuing to ensure SLA compliance.
Licenses for security (VPN, IPS) and performance-enhancing features are embedded in the AIM modules; additional feature licenses may be activated via Cisco Software Activation.
Cisco offers a limited lifetime hardware warranty plus 90 days of Cisco Software Technical Support with options to purchase extended support contracts.
Use embedded SNMP, NetFlow, and Cisco IOS Security MIBs with Cisco Prime Infrastructure or third-party NMS platforms to monitor health, traffic, and security events.