C921J-4P Overview

C921J-4P is the Cisco 921J Gigabit Ethernet security router with external power supply for Japan only. Cisco 900J 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. The C921J-4P supported only on Cisco IOS Software Release 15.8(3)Mb and later.

Quick Spec

Table 1 shows the quick spec.

Model	C921J-4P
Description	Cisco 921J Gigabit Ethernet security router with external power supply for Japan only
WAN interfaces	2 ports Gigabit Ethernet (GE)
LAN interfaces	4-port 10/100/1000-Mbps managed switch
Integrated USB 2.0	Yes
Default and maximum DRAM	Default 1 GB
Default and maximum flash memory	2 GB; not upgradable
Dimension	1.10 x 8.50 x 6.50 in. (2.80 x 21.59 x 16.51 cm) (includes rubber feet)

Product Detail

Figure 1 shows the ports of C921J-4P.

Note

	#6-32 Ground screw		GE LAN port
	Power button		GE LAN port
	12VDC input		GE LAN port
	Reset button		GE WAN port
	System LED		Console port
	USB2.0 port		Kensington Lock
	GE LAN port		VPN LED
	GE LAN port

Compare to Similar Item

Table 2 shows the comparison.

Model	C921-4P	C921J-4P
Description	Cisco 921 Gigabit Ethernet security router with internal power supply	Cisco 921J Gigabit Ethernet security router with external power supply for Japan only
WAN interfaces	1 port GE and 1 VADSL (Annex B/J)	2 ports Gigabit Ethernet (GE)
LAN interfaces	4-port GE managed switch	4-port 10/100/1000-Mbps managed switch
Integrated USB 2.0	Yes	Yes
Default and maximum DRAM	Default 1 GB	Default 1 GB
Default and maximum flash memory	2 GB; not upgradable	2 GB; not upgradable

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C921J-4P Specification

C921J-4P Specification
Description	Cisco 921J Gigabit Ethernet security router with external power supply for Japan only
WAN interfaces	2 ports Gigabit Ethernet (GE)
LAN interfaces	4-port 10/100/1000-Mbps managed switch
Integrated USB 2.0	Yes
Cisco IOS Software
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)
Switch features	Auto Media Device In/Media Device Cross Over (MDI-MDX) 25 802.1Q VLANs MAC filtering Four-port 802.3af and Cisco compliant PoE 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 Secure HTTP (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 900J 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 available
Physical dimensions and weight	Weight: 2.04 lb (0.924 kg) maximum Product dimensions: H x W x D = 1.10 x 8.50 x 6.50 in. (2.80 x 21.59 x 16.51 cm) (includes rubber feet)
External power supply	Power specifications: External power supply AC input voltage: Universal 100 to 240 VAC Frequency: 50 to 60 Hz Maximum output power: 18W Output voltages: 12 VDC
Approvals and compliance	Safety: IEC 60950-1, 2nd Edition with Amendment 1 and Amendment 2 with Japan national deviations Emissions: 47 CFR Part 15: 2006 CISPR22: 2005 EN300386: V1.3.3: 2005 EN55022: 2006 EN61000-3-2: 2000 [+ amd 1 & 2] EN61000-3-3: 1995 [+ amd 1: 2001] ICES-003 Issue 4: 2004 KN 22: 2005 VCCI: V-3/2006.04 Immunity: CISPR24: 1997 [+ amd 1 & 2] EN300386: V1.3.3: 2005 EN50082-1: 1992 EN50082-1: 1997 EN55024: 1998 [+ amd 1 & 2] EN61000-6-1: 2001
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 45C (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)