C921J-4P

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)

①

#6-32 Ground screw

⑨

GE LAN port

②

Power button

⑩

GE LAN port

③

12VDC input

⑪

GE LAN port

④

Reset button

⑫

GE WAN port

⑤

System LED

⑬

Console port

⑥

USB2.0 port

⑭

Kensington Lock

⑦

GE LAN port

⑮

VPN LED

⑧

GE LAN port

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

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 158°F (-40° to 70°C)

● Nonoperating humidity: 5% to 95% relative humidity (noncondensing)

● Nonoperating altitude: 0 to 15,000 ft (0 to 4570 m)

● Operating temperature: 0° to 45°C (de-rate 1°C 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)