Cisco C921-4P 4-Port Gigabit Ethernet Security Router with internal Power Supply

CiscoSKU: C921-4P


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Cisco 900 Series Integrated Services Router

SKU: C921-4P



The Cisco® 900 Series Integrated Services Routers (ISRs) combine Internet access, comprehensive security, and wireless services in a single high-performance device that is easy to deploy and manage. They are well suited for deployment as Customer Premises Equipment (CPE) in enterprise small branch offices and in service provider managed-service environments.

Product Overview

The Cisco 900 Series ISRs deliver integrated security and threat defense, protecting networks from both known and new Internet vulnerabilities and attacks. These powerful, fixed-configuration routers provide secure broadband and Metro Ethernet and wireless LTE WAN connectivity. Service providers offering both managed Ethernet and wireless LTE WAN services can deploy them in customer locations as CPE. Centralized and remote management capabilities are available through web-based tools and Cisco IOS® Software for full visibility and control of network configurations at the remote site.

The 900 Series ISRs simplify the deployment of Ethernet WAN services, with end-to-end Operations, Administration, and Maintenance (OA&M), Service-Level Agreement (SLA) monitoring and verification, and configuration management.

The Cisco 900 Series ISRs come with a 4-port managed switch, providing LAN ports to connect multiple devices. Figures 1 and 2 show the C921-4P and C926-4P models.

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Figure 1.       

C921-4P ISR Front, Back, and Top Views

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Figure 2.       

C926-4P ISR Front, Back, and Top Views

Features and Benefits

Table 1 describes some of the business needs enterprises have in branch offices and other edge networking locations and how the Cisco 900 Series ISRs fulfill those requirements.

Table 1.        How the Cisco 900 Series ISRs Address Edge Networking Challenges

Business need

Features and descriptions

High availability and business continuity

●  Redundant WAN connections for failover protection and load balancing
●  Dynamic failover protocols such as Virtual Router Redundancy Protocol (VRRP, RFC 2338), Hot Standby Router Protocol (HSRP), and Multigroup HSRP (MHSRP)

Consistent, high application performance levels

●  Can run multiple services simultaneously with no performance degradation

Risk mitigation with multilevel security

●  Network perimeter security with integrated application inspection firewall
●  Data privacy through high-speed IP Security (IPsec) Triple Data Encryption Standard (3DES) and Advanced Encryption Standard (AES) encryption
●  Enforced security policy with intrusion prevention
●  Security hardware acceleration
●  FlexVPN
●  Next-generation encryption for secure network communications systems, reliable for the next decade

Feature consolidation for real estate, Capital Expenditures (CapEx), and management savings

●  Supports LAN connections

Unified control of wired and wireless networks from a common console for streamlined operations

●  Simplifies and centralizes configuration and management of wireless and wireline devices

Remote configuration and management to keep local IT staff lean

●  Supports separate console ports



Product Description Cisco Integrated Services Router 921 - router - desktop
Device Type Router - 4-port switch (integrated)
Enclosure Type Desktop
WAN Ports Qty 2
Data Link Protocol Ethernet, Fast Ethernet, Gigabit Ethernet
Network / Transport Protocol L2TP, RSVP, ICMP/IP, IPSec, FTP, DHCP, DNS, L2TPv3, DDNS, RTP, HTTP, HTTPs, cRTP
Routing Protocol OSPF, RIP-1, RIP-2, BGP, EIGRP, HSRP, VRRP, NHRP, IGMPv3, GRE, OSPFv3, policy-based routing (PBR), BGP-4+, WCCP, Bidirectional Forwarding Detection (BFD), RSVP, STP, MGRE
Remote Management Protocol Telnet, SNMP 3, HTTP, HTTPS, SSH, CLI
Features NAT support, auto-uplink (auto MDI/MDI-X), IGMP snooping, DiffServ support, MAC address filtering, LLQ, CBWFQ, WFQ, ACL support, QoS, LFI, DMVPN, DHCP server, VRF-Lite, DNS proxy, DHCP relay, DHCP client, MIB, NDP, VPN Server, FNF, DSCP support, Storm Control, SmartPort technology, VPN client, HQoS, SPAN, EEM, MHSRP, NBAR, NBAR 2, PfR, CBTS, CBTP, CBWRED, Cisco IP SLA, Cisco NG PnP Protocol
Compliant Standards IEEE 802.1D, IEEE 802.1Q, IEEE 802.1x
Power AC 120/230 V (50/60 Hz)
Dimensions (WxDxH) 22.86 cm x 24.13 cm x 4.32 cm
Manufacturer Warranty 1-year warranty

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