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C2811-VSEC-SRST/K9
2811 VSEC Bundle w/PVDM2-16,FL-SRST-35,Adv IP Serv,128F/256D
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C2811-VSEC-SRST/K9 is a modular enterprise router engineered with a robust architecture that integrates advanced security, voice, and data services. It provides flexible power options via an AC power supply, dual WAN interfaces paired with modular LAN connectivity, and comprehensive VPN features, making it suitable for secure branch-office and remote connectivity applications.
C2811-VSEC-SRST/K9 delivers optimized throughput and high performance with built‐in firewall and intrusion prevention capabilities, while its modular expansion slots enable integrated voice services and scalable network enhancements. The router supports industry-standard routing protocols, redundancy features, and high availability, targeting enterprise use cases that demand reliable, secure, and adaptable connectivity solutions.
C2811-VSEC-SRST/K9 price is $2,131.00, a 54.6% saving from the Cisco list price of $4,695.00. C2811-VSEC-SRST/K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C2811-VSEC-SRST/K9 for additional pricing. Browse the full Router Isr 2800 series or explore all Cisco products.
In a multi-site retail chain, the C2811-VSEC-SRST/K9 with FL-SRST-35 and PVDM2-16 delivers automatic call processing failover when the central Cisco Unified Communications Manager becomes unreachable. This ensures uninterrupted local voice services, achieves 99.9% telephony uptime, and lowers support costs by leveraging built-in DSP resources for emergency site survivability.
A financial services firm deploys the 2811 VSEC Bundle (Adv IP Serv, 128F/256D) to establish high-performance IPsec VPN tunnels between its head office and remote branches while enforcing application-level firewall policies and intrusion prevention. The solution maintains compliance with PCI DSS and scales to 200+ concurrent encrypted sessions, delivering end-to-end data confidentiality and real-time threat protection.
A manufacturing enterprise leverages the C2811-VSEC with PVDM2-16 and Advanced IP Services to consolidate voice, video, and data traffic on a single WAN link. Quality-of-Service prioritizes VoIP packets while WAN compression and traffic shaping optimize bandwidth usage, reducing latency by 40% and improving Mean Opinion Score (MOS) for remote site calls without additional circuits.
To get the detailed certification, please go to the Compliance Center.
| C2811-VSEC-SRST/K9 |  C2801-SHDSL-V3/K9 |  CISCO2821-DC |  C2801-VSEC-CUBE/K9 |  CISCO2821-SEC/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Fixed | Fixed | Fixed |
| Broadband | N/A | DSL | N/A | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, VPN Encryption | Firewall | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, VPN |
| Compliance Standards | IEEE 802.3, IEEE 802.2 | FCC, CE | FCC, CE, UL | FCC / CE | RoHS, FCC, CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 14.6 inches | N/A | N/A | 15 inches | 14.0 inches |
| Device Type | Router | Router | Router | Router / Voice Gateway | 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 | EHWIC | NIM | EHWIC | EHWIC | EHWIC |
| Features | VPN / Firewall / IPv6 Compatible | VPN, Firewall, NAT, QoS, Integrated Services | VPN / IPv6 Compatible / Firewall | VPN / VoIP / IPv6 Compatible / Firewall | VPN, Firewall, Intrusion Prevention, IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 128 MB | 128 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount / Desktop | Rack-mount | Rack-mount | Rack-mount, Desktop |
| Height | 1.75 inches | N/A | N/A | 1.75 inches | 3.0 inches |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice | Voice, VPN, Routing | Voice / Video | Voice / Video / WAN Optimization | Voice, Video, WAN Optimization |
| Interface Ports | RJ-45 | RJ-45, Optional SFP | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | Modular LAN | 2 LAN Ports | 4 LAN Ports | 4 LAN Ports | N/A |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 512 MB | 256 MB | 256 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | TCP/IP, IPX, AppleTalk | IP, TCP, UDP, ICMP | IPv4, IPv6, OSPF, EIGRP, RIP, BGP, Static Routing | IPv4 / IPv6 | IPv4, IPv6 |
| Power | 160 Watts | 65 Watts | 55 W | 60 W | 65 W |
| Power Source | AC Power Supply | AC Power Supply | DC Power Supply | AC Power Supply / Redundant | AC Power Supply / Redundant |
| Product Name | Cisco 2811-VSEC-SRST/K9 | Cisco 2801-SHDSL-V3/K9 Integrated Services Router | Cisco 2821-DC Integrated Services Router | Cisco 2801 VSEC CUBE | Cisco 2821 Integrated Services Router Security (CISCO2821-SEC/K9) |
| Product Type | Enterprise Router | Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | Telnet, SSH, SNMP | Telnet, SSH, SNMP | Telnet, SSH, SNMP | Telnet / SSH / SNMP / HTTP | SSH, Telnet, SNMP |
| 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 | N/A | Fast Ethernet | Gigabit | Fast Ethernet | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.05 Gbps | 25 Mbps | 0.075 Gbps | 37 Mbps | 0.075 Gbps |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise | Enterprise, Business |
| VPN Support | IPSec / DMVPN | IPSec / SSL VPN | IPSec | IPSec / SSL VPN / DMVPN / N/A | IPSec / SSL VPN / N/A |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 15 lbs | N/A | N/A | 12 lbs | 12 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.3 inches | N/A | N/A | 17 inches | 17.0 inches |
| Wireless Support | No | No | No | No | No |
Excellent voice survivability performance. SRST engaged seamlessly during link failures.
Stable router for secure voice deployments. Easy to configure and dependable.
Cisco reliability shows here. Voice services stayed operational during outages.
A trustworthy solution for branch voice continuity. Works as advertised.
Strong SRST functionality combined with solid security. Suitable for enterprise branches.
The Cisco C2811-VSEC-SRST/K9 is an integrated router bundle featuring a 2811 ISR, Advanced IP Services license, PVDM2-16 DSP module, FL-SRST-35 survivable telephony license and enhanced security for reliable enterprise networking.
This bundle includes the Cisco 2811 ISR with 128 MB Flash/256 MB DRAM, PVDM2-16 for voice DSP, FL-SRST-35 for branch call survivability and Advanced IP Services for routing and VPN capabilities.
The PVDM2-16 is a high-density DSP module supporting up to 16 voice channels for conferencing, transcoding and enhanced VoIP quality in branch deployments.
The FL-SRST-35 license enables Cisco Unified Survivable Remote Site Telephony for up to 35 IP phones, ensuring uninterrupted call processing at remote sites during WAN outages.
Advanced IP Services unlocks BGP, OSPFv3, EIGRP, MPLS, IPv6 support and IPsec VPN for scalable, secure enterprise-grade routing and connectivity.
It integrates Cisco IOS Security features such as Zone-Based Firewall, Secure VPN, Control Plane Policing and intrusion prevention for comprehensive threat defense.
The 2811 ISR features a 266 MHz processor, dual Fast Ethernet WAN ports, two integrated switch ports, 128 MB Flash and 256 MB DRAM for reliable performance.
Yes, the PVDM2-16 module enables up to 16 simultaneous voice channels, delivering HD voice, conferencing and transcoding for branch offices.
Absolutely—this bundle runs a standard Cisco IOS image and integrates seamlessly with existing Cisco routers, switches and Unified Communications infrastructure.
The router supports modular interface cards, memory and flash upgrades plus optional licenses for voice channels and security services to grow with your network.
It’s ideal for branch offices, retail outlets and small enterprises requiring secure WAN connectivity, voice survivability and advanced routing at remote sites.
The 2811 ISR delivers up to 90 Mbps aggregate throughput, 1 Mpps forwarding rate and concurrent support for data, voice and security services.
Cisco provides a 90-day hardware replacement warranty with 12-month limited software support; Smart Net Total Care contracts offer 24×7 assistance and expedited hardware replacement.
Enable the FL-SRST feature in Cisco IOS, configure dial-peers for IP phone registration and assign the CUCM group to the ISR for automatic SRST failover.
Contact your authorized Cisco reseller or visit the Cisco Commerce portal, provide SKU C2811-VSEC-SRST/K9 and select desired support options to complete your purchase.
The Cisco 2811 ISR consumes approximately 35–40 W under typical operating conditions, offering energy-efficient performance for branch environments.