The Cisco 1921 builds on the best-in-class. All Cisco 1900 Series Integrated Services Routers offer embedded hardware encryption acceleration, and advanced security services. In addition, the platforms support the industry's widest range of wired and wireless connectivity options such as Serial, T1/E1, xDSL, Gigabit Ethernet, and third-generation (3G) wireless.
The Cisco 1921 is architected to meet the application demands of today's branch offices with design flexibility for future applications.
The Cisco 1921 provides significantly enhanced modular capabilities that offer you investment protection. You can easily interchange modules used on the Cisco 1921 with other Cisco routers to provide maximum investment protection. Taking advantage of common interface cards across a network greatly reduces the complexity of managing inventory requirements, implementing large network rollouts, and maintaining configurations across a variety of branch-office sizes.
Firewall protection, VPN support, MPLS support, VLAN support, Syslog support, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Quality of Service (QoS), Web Services Management Agent (WSMA), TR-069 Agent, NetFlow
IEEE 802.1Q, IEEE 802.3ah, IEEE 802.1ah, IEEE 802.1ag, VCCI, CISPR 22 Class A, CISPR 24, EN 61000-3-2, EN55024, EN55022 Class A, EN50082-1, AS/NZS 60950-1, CAN/CSA-E60065-00, ICES-003 Class A, CS-03, FCC CFR47 Part 15, EN300-386, UL 60950-1, IEC 60950-1, EN 60950-1, BSMI CNS 13438, CSA C22.2 No. 60950-1, AS/NZS 3548 Class A
512 MB (installed) / 512 MB (max)
256 MB (installed) / 256 MB (max)
Expansion / Connectivity
2 x 10Base-T/100Base-TX/1000Base-T - RJ-45 , Serial: 1 x console , Management: 1 x console - mini-USB Type B , Serial: 1 x auxiliary , USB 2.0: 1 x 4 pin USB Type A
2 (total) / 2 (free) x EHWIC
Internal power supply
AC 120/230 V (50/60 Hz)
Power Consumption Operational
Rack Mounting Kit
Software / System Requirements
Cisco IOS Security
Dimensions & Weight
Service & Support
Limited warranty - advance parts replacement - 1 year - response time: 10 days