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CISCO881G-K9
- Description:
- Cisco 881G Ethernet Sec Router w/ 3G B/U
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All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
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If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
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CISCO881G-K9 Overview
CISCO881G-K9 delivers a fixed router architecture engineered for small business and branch office environments with integrated services, including robust VPN support, advanced firewall features, and comprehensive routing protocols. Designed for high performance, this router offers a reliable AC power option, a dedicated WAN port alongside four LAN ports supporting 10/100 Ethernet connectivity, and integrated voice capabilities to serve converged data and communication needs.
CISCO881G-K9 incorporates built-in VPN features such as IPSec and DMVPN to secure remote connectivity while ensuring efficient throughput of up to 0.05 Gbps. Although configured as a fixed, desktop router without modular expansion slots or redundant power support, it delivers essential integrated services—including voice, QoS, and firewall protection—for small business use cases that demand secure, cost-effective, and high-performance connectivity.
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CISCO881G-K9 Specifications
| Product Type | Enterprise Router |
| VPN Support | IPSec / DMVPN |
| Power Source | AC Power Supply |
| Routing Protocols | OSPF / EIGRP / RIP / BGP / Static Routing |
| Broadband | N/A |
| Architecture | Fixed |
| WAN Configuration | WAN |
| WAN Ports | 1 WAN |
| LAN Ports | 4 LAN Ports |
| Ethernet Technology | 10/100 |
| Wi-Fi Standard | N/A |
| Connectivity Type | Wired |
| Network Protocols | IPv4 / IPv6 |
| Remote Management | CLI / SNMP |
| Compliance Standards | FCC / CE |
| Wireless Support | No |
| Speed/Capacity | N/A |
| Firewall Features | Yes |
| Features | VPN / VoIP / IPv6 Compatible / Firewall / NAT / QoS |
| Use Case | Small Business |
| Management | Managed |
| Form Factor | Desktop |
| Integrated Services | Voice |
| High Availability Support | Not Supported |
| Safety | UL / CE |
| EMC | FCC |
| Telecom | N/A |
| Throughput Capacity | 0.05 Gbps |
| QoS Features | Supported |
| Built-in Security Features | Firewall / Intrusion Prevention |
| Expansion Slots | N/A |
| Modular Slots Available | N/A |
| Stacking Capability | No |
| 5G Support | No |
| Memory | 512 MB |
| Flash Memory | 256 MB |
| Interface Ports | RJ-45 |
| Power | 48 Watt |
| Device Type | Router |
| Product Name | CISCO881G-K9 |
| Height | 1.2 inches |
| Width | 8.7 inches |
| Depth | 7.4 inches |
| Weight | 4.6 lbs |
CISCO881G-K9 Use Case
Resilient Enterprise Branch Connectivity with 3G Backup
A multinational retailer deploys the Cisco 881G-K9 at dozens of suburban branches, establishing IPSec VPN tunnels over primary Ethernet links and auto-failing over to integrated 3G backup when outages occur. Benefit: Delivers 99.9% network uptime for POS systems and corporate apps, preventing revenue loss and ensuring seamless customer service.
Secure Pop-Up Retail and Event Network
An event management firm uses the Cisco 881G-K9 to quickly spin up encrypted WAN links at trade shows and pop-up stores, leveraging its 3G backup for instant, reliable connectivity without fixed lines. Outcome: Achieves PCI-compliant transactions, zero installation delays, and on-demand scalability, boosting sales and customer satisfaction.
Rapid-Deploy Field Office for Emergency Services
A disaster relief agency outfits mobile command centers with Cisco 881G-K9 routers to establish secure VPN backhaul over Ethernet or 3G cellular networks in remote or damaged areas. Benefit: Enables real-time coordination, GIS data transfer, and voice communications under any conditions, accelerating response times and saving lives.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Modular | Fixed | Fixed |
| Broadband | N/A | N/A | N/A | N/A | DSL / Cable / N/A |
| Built-in Security Features | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection |
| Compliance Standards | FCC, CE | FCC, CE, RoHS | IEEE 802.3, FCC, CE | FCC / CE | IEEE 802.3, IEEE 802.11b/g |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired / Wireless |
| Depth | 7.6 inches | N/A | 15 inches | 7.4 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | FCC | N/A |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100 | 10/100 |
| Expansion Slots | EHWIC | EHWIC | EHWIC, NIM | N/A | N/A |
| Features | VPN, Firewall, Intrusion Prevention, QoS, NAT, ACL | VPN, Firewall, Intrusion Prevention, IPv6 Compatible | VPN / IPv6 Compatible / Firewall / NAT | VPN / VoIP / IPv6 Compatible / Firewall / NAT / QoS | VPN, Firewall, Integrated Wireless, VoIP |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 128 MB |
| Form Factor | Desktop / Rack-mount | Desktop | Rack-mount | Desktop | Desktop |
| Height | 2.4 inches | N/A | 1.75 inches | 1.2 inches | N/A |
| High Availability Support | Supported | Supported | Supported | Not Supported | Supported |
| Integrated Services | Voice, Video, WAN Optimization | Voice, Video, WAN Optimization | Voice / Video / Data | Voice | Voice, Video, WAN Optimization |
| Interface Ports | RJ-45, SFP | RJ-45, SFP | RJ-45, SFP, Combo Ports | RJ-45 | RJ-45 |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 512 MB | 1 GB | 512 MB | 256 MB |
| Modular Slots Available | 1 Slot | 1 Slot | 2 Slots | N/A | N/A |
| Network Protocols | TCP/IP, UDP, ICMP, IGMP, SNMP | IPv4, IPv6 | IPv4, IPv6, MPLS | IPv4 / IPv6 | TCP/IP, UDP, ICMP |
| Power | 65 Watts | 65W | 65 Watt | 48 Watt | 65 Watt |
| Power Source | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply | AC Power Supply / DC Power Supply / Redundant |
| Product Name | Cisco 887 Integrated Services Router Secure (CISCO887-SEC-K9) | Cisco 887VGW-GNE-K9 | CISCO888-K9 | CISCO881G-K9 | CISCO851W-G-A-K9 |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH, Telnet, SNMP | CLI, SNMP, HTTP/HTTPS | SNMP, SSH, HTTPS | CLI / SNMP | Telnet, SSH, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / EIGRP / RIP / BGP / Static Routing | OSPF / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | UL, CSA | UL / CE | N/A |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | N/A | 100 Mbps |
| Stacking Capability | No | No | Yes | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 75 Mbps | 1 Gbps | 2 Gbps | 0.05 Gbps | 100 Mbps |
| Use Case | Enterprise / Business | Enterprise | Enterprise | Small Business | Enterprise / Small Business |
| VPN Support | IPSec / SSL VPN | IPSec / SSL VPN / GRE / N/A | IPSec / SSL VPN / DMVPN | IPSec / DMVPN | IPSec |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | WAN | WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 1 WAN | 1 WAN |
| Weight | 7 lbs | N/A | 12 lbs | 4.6 lbs | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | WiFi 4 (802.11g) |
| Width | 8.6 inches | N/A | 17.5 inches | 8.7 inches | N/A |
| Wireless Support | No | No | No | No | Yes |
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Questions & Answers
Q
What is the Cisco 881G-K9 Integrated Services Router?
A
The Cisco 881G-K9 is a compact, entry-level integrated services router with built-in 3G cellular backup, eight switched Ethernet ports and advanced security, designed for small offices and branch deployments.
Q
What are the key features of the Cisco 881G-K9 router?
A
Key features include hardware-encrypted VPN (IPsec, SSL), eight 10/100 Mbps switched Ethernet ports, dual WAN with DSL and 3G cellular backup, Cisco IOS security services and QoS traffic management.
Q
How many Ethernet ports does the Cisco 881G-K9 offer?
A
The router provides eight 10/100 Mbps switched Ethernet LAN ports plus one 10/100 Mbps Ethernet WAN port for DSL or cable connectivity.
Q
How does the 3G cellular backup work on the 881G-K9?
A
When the primary DSL or cable link fails, the built-in 3G WWAN module automatically switches traffic to a cellular network, ensuring uninterrupted Internet access.
Q
What is the maximum routing throughput of the Cisco 881G-K9?
A
The Cisco 881G-K9 delivers up to 25 Mbps of aggregate routing throughput, suitable for typical small-office Internet access and VPN tunnels.
Q
Does the 881G-K9 support VPN, and which types?
A
Yes. It supports hardware-accelerated IPsec VPN for site-to-site and remote-access tunnels plus SSL VPN with Cisco Easy VPN for secure connectivity.
Q
What integrated security features are included?
A
Integrated security includes stateful Packet Inspection Firewall, intrusion prevention (IPS), content filtering, and Cisco IOS Zone-Based Firewall for multilayer protection.
Q
Which WAN interface options are available on the Cisco 881G-K9?
A
Available WAN interfaces include one 10/100 Mbps Ethernet WAN port for DSL/cable, an internal ADSL2+/G.SHDSL modem option and a 3G WWAN module slot for cellular backup.
Q
Can the 881G-K9 connect to wireless networks?
A
Yes. The router supports a 3G WWAN mini-PCI slot for plugging in compatible cellular data cards to provide wireless backup connectivity.
Q
What operating system does the Cisco 881G-K9 use?
A
It runs Cisco IOS Software with integrated security, routing, and WAN services, easily managed via CLI, Cisco Configuration Professional or Cisco Prime.
Q
How do I configure the 3G backup on the 881G-K9?
A
You configure the 3G backup by installing a supported WWAN card, defining the cellular interface in IOS, then using IP SLA and object tracking to failover automatically.
Q
Can I manage the Cisco 881G-K9 remotely?
A
Yes. Remote management is available via SSH, Telnet, SNMP v2/v3 and Cisco IOS’s embedded web interface or CLI tools such as Cisco Configuration Professional.
Q
What are the power and environmental specifications?
A
The router operates on 12V DC, consumes under 30W, and supports an operating temperature range of 0–40°C (32–104°F) with relative humidity of 10–95% non-condensing.
Q
What is the form factor and physical dimension of the 881G-K9?
A
The Cisco 881G-K9 has a desktop/rack-mountable form factor, measuring 27.9 x 17.8 x 4.4 cm (11 x 7 x 1.75 in) and weighing approximately 1.4 kg (3.1 lbs).
Q
Does the 881G-K9 support Power over Ethernet (PoE)?
A
No. The Cisco 881G-K9 does not include PoE functionality; PoE requirements must be met by an external midspan injector or switch.
Q
What certifications and compliance standards does it meet?
A
The Cisco 881G-K9 is UL Listed, CE Marked, FCC Class A, RoHS compliant and supports IEEE 802.3/802.3u/802.3x standards for safety and interoperability.
Q
What warranty and support options are available for the Cisco 881G-K9?
A
Cisco offers a limited lifetime hardware warranty along with optional SMARTnet support for 24/7 access to software updates, hardware replacement and expert technical assistance.
