/
Description
[shortdesc]
- Router
- 4-port switch
- GigE
- WAN ports: 2
[specifications]
| Maximum crypto throughput (bit-rate policed) | 150 Mbps |
| IP and IP services | Routing Information Protocol Versions 1 and 2 (RIPv1 and RIPv2) Generic Routing Encapsulation (GRE) and Multipoint GRE (MGRE) Cisco Express Forwarding Standard 802.1d Spanning Tree Protocol Layer 2 Tunneling Protocol (L2TP) L2TP Version 3 (L2TPv3) Network Address Translation (NAT) Dynamic Host Configuration Protocol (DHCP) server. relay. and client Dynamic DNS DNS Proxy DNS Spoofing Access Control Lists (ACLs) IPv4 and IPv6 multicast Open Shortest Path First (OSPF) Border Gateway Protocol (BGP) Performance Routing (PfR) Enhanced Interior Gateway Routing Protocol (EIGRP) Virtual Route Forwarding (VRF) Lite Next Hop Resolution Protocol (NHRP) Bidirectional Forwarding Detection (BFD) Web Cache Communication Protocol (WCCP) |
| xDSL | True Multimode VDSL2 and ADSL2+ over Annex A. B. J. and M. including traditional G.DMT and T1.413 World-class interoperability with industry-standard DSL Access Multiplexer (DSLAM) chipsets Highest field reliability with Impulse Noise Protection (INP) over Repetitive Electrical Impulse Noise (REIN) and single isolated impulse noise (SHINE). extended INP delay. G.INP. physical layer retransmission. Seamless Rate Adaptation (SRA). and Bitswap VDSL2 Persistent Storage Device (PSD) profiles up to 17a/b with support for spectral shaping VDSL2 vectoring to offer blazing fiber speeds over copper Remote management with TR069 and CWMP Investment protection with Gigabit Ethernet |
| Switch features | Auto Media Device In/Media Device Cross Over (MDI-MDX) 25 802.1Q VLANs MAC filtering Switched Port Analyzer (SPAN) Storm control Smart ports Secure MAC address Internet Group Management Protocol Version 3 (IGMPv3) snooping 802.1X |
| Security features | Secure connectivity: Secure Sockets Layer (SSL) VPN for secure remote access Hardware-accelerated DES. 3DES. AES 128. AES 192. and AES 256 Public-Key-Infrastructure (PKI) support 50 IPsec tunnels Cisco Easy VPN client and server NAT transparency Dynamic Multipoint VPN (DMVPN) Tunnel-less Group Encrypted Transport VPN (GET VPN) VRF-aware IPsec IPsec over IPv6 Adaptive control technology Session Initiation Protocol (SIP) application-layer gateway Cisco IOS Firewall: Zone-based policy firewall VRF-aware stateful inspection routing firewall Stateful inspection transparent firewall Advanced application inspection and control HTTPS. FTP. and Telnet Authentication Proxy Dynamic and static port security Firewall stateful failover VRF-aware firewall Cisco IOS Software black and white lists Integrated threat control: Intrusion Prevention System (IPS) Control plane policing Flexible packet matching Network foundation protection |
| Quality of Service (QoS) | Low-Latency Queuing (LLQ) Weighted Fair Queuing (WFQ) Class-Based WFQ (CBWFQ) Class-Based Traffic Shaping (CBTS) Class-Based Traffic Policing (CBTP) Policy-Based Routing (PBR) Class-Based QoS MIB Class of Service (CoS)-to-Differentiated Services Code Point (DSCP) mapping Class-Based Weighted Random Early Detection (CBWRED) Network-Based Application Recognition (NBAR) Link Fragmentation and Interleaving (LFI) Resource Reservation Protocol (RSVP) Real-Time Transport Protocol (RTP) header compression (cRTP) Differentiated Services (DiffServ) QoS preclassify and prefragmentation Hierarchical QoS (HQoS) |
| Management | Cisco Configuration Professional Cisco Configuration Express Cisco Configuration Engine support Cisco AutoInstall Cisco IP Service-Level Agreement (IP SLA) Cisco IOS Embedded Event Manager (EEM) CiscoWorks Cisco Security Manager Telnet. Simple Network Management Protocol Version 3 (SNMPv3). Secure Shell (SSH) Protocol. Command-Line Interface (CLI). and HTTP management RADIUS and TACACS+ Cisco Next Generation Plug-and-Play (NG PnP) Protocol |
| High availability | Virtual Router Redundancy Protocol (VRRP) (RFC 2338) HSRP MHSRP |
| Metro Ethernet | Ethernet OA&M Ethernet Local Management Interface (E-LMI) IP SLA for Ethernet |
| IPv6 | IPv6 addressing architecture IPv6 name resolution IPv6 statistics IPv6 translation: Transport packets between IPv6-only and IPv4-only endpoints (NAT-Protocol Translation) Internet Control Message Protocol Version 6 (ICMPv6) IPv6 DHCP OSPFv3 BGP4+ IPv6 Path Maximum Transmission Unit (PMTU) IPv6 neighbor discovery IPv6 stateless address autoconfiguration (SLAAC) IPv6 multicast routing |
| Application visibility and control | NBAR2 Flexible NetFlow (FNF) Performance Agent |
| Number of recommended users | 50 |
| Default and maximum DRAM | Default 1 GB |
| Default and maximum flash memory | 2 GB on all Cisco 900 Series ISR models; not upgradable |
| WAN | Refer to Table 2 for details |
| LAN switch | Refer to Table 2 for details |
| Separate console ports | RJ-45 |
| USB 2.0 | One USB 2.0 Type A port |
| Physical dimensions | H x W x D = 1.70 x 9.0 x 9.5 in. (4.32 x 22.86 x 24.13 cm) (includes rubber feet) |
| Power supply | Power specifications: AC input voltage: Universal 100 to 240 VAC Frequency: 50 to 60 Hz Internal power supply (C921-4P and C931-4P only) |
| Approvals and compliance | Safety: IEC 60950-1 UL 60950-1 CAN/CSA C22.2 No. 60950-1 EN 60950-1 AS/NZS 60950.1 Class I Equipment (C921-4P and C931-4P only) Class III Equipment (C927-4P. C927-4PM. and C926-4P only) Emissions: 47 CFR Part 15: 2006 CISPR22: Edition 6.0: 2008 CNS13438: 2006 EN 300 386 V1.6.1 EN 55032 EN61000-3-2: 2006 [+ amd 1 & 2] EN61000-3-3: 2008 ICES-003 Issue 5: 2012 KN 22: 2009 TCVN 7189: 2009 VCCI: V-3/2012.04 Immunity: CISPR24: 2010 [+ amd 1 & 2] EN300386: V1.6.1 EN55024: 2010 EN61000-6-1: 2007 KN24: 2011 TCVN 7317:2003 |
| Environmental operating range | Nonoperating temperature: -40 to 158F (-40 to 70C) Nonoperating humidity: 5% to 95% relative humidity (noncondensing) Nonoperating altitude: 0 to 15.000 ft (0 to 4570 m) Operating temperature: 0 to 50C (de-rate 1C per 1000-ft increase in altitude) Operating humidity: 5% to 95% relative humidity (noncondensing) Operating altitude: 0 to 10.000 ft (0 to 3000 m) |
Cisco C921-4P Router Overview
The Cisco 900 Series Integrated Services Routers (ISR 900) combines WAN. comprehensive security. and advanced connectivity in a compact. fanless platform. The routers are designed to provide enterprise-class security and connectivity for small to medium businesses. The ISR 921 model comes with a 4-port managed switch. providing LAN ports to connect multiple devices and up to 150 Mbps of VPN throughput for high performance. These small. yet powerful. fixed-configuration routers provide secure broadband and Metro Ethernet connectivity. The routers deliver integrated security and threat defense. protecting networks from both known and new Internet vulnerabilities and attacks.
| WAN interfaces | 2 ports Gigabit Ethernet (GE) |
| LAN interfaces | 4-port GE managed switch |
| Integrated USB 2.0 | Yes |
| Default and maximum DRAM | Default 1 GB |
| Default and maximum flash memory | 2 GB; not upgradable |
| Dimensions (H x W x D) | 1.70 x 9.0 x 9.5 in. (4.32 x 22.86 x 24.13 cm) (includes rubber feet) |
