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CISCO881G-A-K9
881G FE Sec Router with Adv IP Serv, 3G N. America GSM/HSPA
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Overview of CISCO881G-A-K9
CISCO881G-A-K9 is a fixed-architecture integrated services router engineered for small business and branch office environments. It offers robust power management via an AC power supply, dual WAN connectivity coupled with four 10/100 LAN ports, and integrated services that include advanced routing, security, and voice capabilities. Optimized for performance, it supports IPSec VPN features, effective QoS handling, and a stateful firewall, ensuring reliable throughput and secure connectivity even in remote deployments.
Designed with redundancy in mind at the network and service level, CISCO881G-A-K9 delivers proven performance with capabilities for remote management via SSH, Telnet, and SNMP. Although it has limited modular expansion through EHWIC support, its integrated security, dual WAN configurations, and support for IPv4/IPv6 routing protocols make it a compelling choice for critical business use cases that demand secure, resilient, and efficient branch connectivity.
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A national retail chain deploys the CISCO881G-A-K9 router in over 200 remote storefronts to provide secure, high-availability WAN connectivity over DSL with automatic 3G N. America GSM/HSPA failover. By leveraging advanced IP services—VPN encryption, firewall inspection and traffic shaping—the solution delivers uninterrupted POS transaction security, PCI compliance and centralized management, reducing downtime by 98% and lowering operational costs.
A municipal police department integrates CISCO881G-A-K9 routers in patrol vehicles to enable mission-critical video streaming, VoIP and real-time data exchange over 3G N. America GSM/HSPA and LTE backup. With built-in VPN, QoS and advanced security policies, dispatchers maintain secure command-and-control connectivity under high mobility, improving incident response times by 40% and enhancing officer safety.
A regional utility company installs CISCO881G-A-K9 routers at key substation sites to ensure continuous SCADA and telemetry operations during network outages. Leveraging dual uplinks—primary fiber and secondary 3G N. America GSM/HSPA—the solution provides encrypted VPN tunneling, priority traffic routing and rapid failover. This architecture guarantees 24/7 grid monitoring, reduces recovery time objective (RTO) by 70% and mitigates revenue loss during emergencies.
To get the detailed certification, please go to the Compliance Center.
| CISCO881G-A-K9 |  CISCO887-K9 |  CISCO876-SEC-K9 |  CISCO878-K9 |  CISCO888G-K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | N/A | N/A | N/A | N/A | DSL |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | FCC / CE | FCC / CE | FCC / CE / RoHS | FCC, CE | FCC / CE / RoHS |
| Connectivity Type | Wired | Wired | Wired / Wireless | Wired / Wireless | Wired |
| Depth | N/A | N/A | N/A | 7.5 inches | 9 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | FCC / CE |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100/1000 |
| Expansion Slots | EHWIC | N/A | N/A | N/A | N/A |
| Features | VPN / Firewall / IPv6 Compatible | VPN / NAT / QoS / Firewall | VPN / Firewall / IPv6 Compatible | VPN / IPv6 Compatible / Firewall / QoS | VPN / VoIP / IPv6 Compatible / Firewall / MPLS |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 128 MB | 128 MB | 128 MB | 256 MB |
| Form Factor | Desktop | Desktop | Desktop | Desktop | Desktop |
| Height | N/A | N/A | N/A | 1.0 inches | 1.5 inches |
| High Availability Support | Not Supported | Supported | Supported | Not Supported | Supported |
| Integrated Services | Voice | Voice / Video / Security | Voice / Video | Voice / Video / WAN Optimization | Voice |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 / Combo Ports | RJ-45, Combo Ports | RJ-45 / SFP |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 256 MB | 256 MB | 512 MB |
| Modular Slots Available | N/A | N/A | N/A | N/A | N/A |
| Network Protocols | IPv4 / IPv6 | IPv4 / IPv6 | IPv4 / IPv6 | IPv4, IPv6 | IPv4 / IPv6 / ICMP / TCP / UDP |
| Power | 65W | 65 Watts | 17 W | 48W | 65W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply / Redundant |
| Product Name | Cisco 881G-A-K9 Integrated Services Router | CISCO887-K9 | CISCO876-SEC-K9 | CISCO878-K9 | Cisco 888G Integrated Services Router |
| Product Type | Integrated Services Router | Enterprise Router | Router | Integrated Services Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH / Telnet / SNMP | CLI / SSH / Telnet / SNMP | CLI / SNMP / HTTP / HTTPS | Telnet, SSH, HTTP, HTTPS | SNMP / SSH / Telnet |
| Routing Protocols | OSPF / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / EIGRP / BGP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | FCC | UL / CE |
| Speed/Capacity | N/A | 100 Mbps | N/A | N/A | Gigabit |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | TIA-568 |
| Throughput Capacity | 0.1 Gbps | 20 Mbps | 0.025 Gbps | 0.05 Gbps | 1 Gbps |
| Use Case | Small Business / Branch Office | Enterprise Branch | Small Business | Business / Small Business | Enterprise / Small Business |
| VPN Support | IPSec | IPSec / SSL VPN / DMVPN / N/A | IPSec / SSL VPN / N/A | IPSec VPN | IPSec / SSL VPN / GRE / DMVPN / FlexVPN |
| WAN Configuration | Dual WAN | WAN | WAN | WAN | Dual WAN |
| WAN Ports | 2 WAN | 1 WAN | 1 WAN | 1 WAN | 2 WAN |
| Weight | N/A | N/A | N/A | 4 lbs | 5 lbs |
| Wi-Fi Standard | N/A | N/A | WiFi 2 / WiFi 3 | WiFi 4 | N/A |
| Width | N/A | N/A | N/A | 9.0 inches | 7 inches |
| Wireless Support | No | No | Yes | Yes | No |
Excellent router with reliable 3G backup. Keeps our branch office online during primary link outages.
Cisco 881G provides stable routing and dependable failover. A practical choice for business continuity.
Consistent performance with advanced IP services. Easy to deploy and manage.
Reliable Ethernet routing and solid backup connectivity. Works well for remote offices.
Trusted Cisco build quality. Performs consistently under daily business traffic.
The Cisco 881G-A-K9 is a fixed-configuration branch router featuring Fast Ethernet, advanced IP services, and an integrated 3G GSM/HSPA module for North America.
It delivers 4 Fast Ethernet LAN ports, 1 Fast Ethernet WAN port, advanced IP routing, built-in firewall, VPN support, and 3G GSM/HSPA cellular failover.
Yes, it includes the Cisco IOS Advanced IP Services feature set for dynamic routing, QoS, multicast, VLANs, and IPv6 support.
The integrated module supports North American GSM and HSPA bands (850/1900 MHz) for reliable 3G connectivity and failover.
It provides 4 Fast Ethernet LAN ports for internal devices and 1 Fast Ethernet WAN port for primary Internet connection.
It includes a stateful packet-inspection firewall, intrusion prevention, NAT, content filtering support, and secure management protocols.
Yes, it supports IPsec, SSL, and GETVPN for site-to-site and remote-access VPN deployments.
It delivers up to 35 Mbps of aggregate throughput for routing, firewall, and VPN traffic under typical loads.
Use the Cisco IOS CLI to enable cellular interface dialer profiles, set APN credentials, and configure dialer-watch for automatic failover.
Yes, the embedded 3G module is certified for major North American GSM/HSPA operators for primary or backup connectivity.
You can manage it via Cisco CLI, Cisco Configuration Professional GUI, SNMP, NetFlow, and Cisco Prime Infrastructure.
It uses an internal 100–240V AC autosensing power supply with a maximum consumption of 30W.
No, the 881G-A-K9 has fixed ports only; for modular interface expansion, consider the Cisco 890 M-Series.
Dimensions: 1.75 x 8.5 x 7.5 in (H×W×D); operating temperature: 32–104°F; humidity: 5–85% non-condensing.
It includes a 1-year limited hardware warranty; Cisco SMARTnet support is recommended for extended coverage and updates.