Cisco C921-4P

Interfaces and Ports

• LAN: 4-port 10/100/1000 Mbps managed Gigabit Ethernet switch
• WAN: 2x Gigabit Ethernet ports (supports redundant WAN for failover and load balancing)
• Other: 1x USB port, console port, and a management port

Security Features

• Integrated Firewall: Application inspection firewall for network perimeter security
• VPN Support: High-speed IPsec (3DES/AES) encryption, FlexVPN, and L2TP support
• Intrusion Prevention: Enforced security policy with IPS capabilities
• Hardware Acceleration: Dedicated security hardware acceleration for encryption tasks

Hardware and Management

• Memory: 1 GB internal memory, 2 GB flash memory
• Power: Internal AC power supply (100-240 VAC, 50-60 Hz)
• Form Factor: Desktop or rack-mountable; dimensions 4.32 x 22.86 x 24.13 cm; weight up to 1.20 kg
• Management: Web-based tools, Cisco IOS Software, Telnet, SSH, SNMPv3, CLI, and HTTP
• QoS: Quality of Service support for traffic prioritization

Additional Capabilities

• Redundancy Protocols: VRRP, HSRP, and MHSRP for high availability
• VLAN Support: Segmentation for network management
• DHCP: Both client and server functionality