Cisco C1-CISCO1921/K9 | 1900 Series 921 2 x Ports 1000Base-T LAN + 1 x Port ADSL2+ WAN + 2 x Expansion Slots 24Mb/s 1U Rack-mountable Integrated Service Router

Technical Specs:
- Routing Protocol: OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-based routing (PBR), RIPng
- Data Link Protocol: Ethernet, Fast Ethernet, Gigabit Ethernet
- Network / Transport Protocol: IPSec, L2TPv3
- Remote Management Protocol: SNMP, RMON, TR-069, TR-098, TR-111
- Encryption Algorithm: SSL, TLS, DES, Triple DES, PKI, 128-bit AES, 192-bit AES, 256-bit AES
- Authentication Method: RADIUS, TACACS+, Secure Shell (SSH), CHAP, Extensible Authentication Protocol (EAP)
- Features: Firewall protection, VPN support, MPLS support, VLAN support, Syslog support, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Quality of Service (QoS), Dynamic Multipoint VPN (DMVPN), DHCP server, DNS proxy, DHCP relay, DHCP client, Network Address Translation (NAT), Port Address Translation (PAT), Access Control List (ACL) support, Dynamic Host Configuration Protocol (DHCP), Hot Standby Router Protocol (HSRP) support, Virtual Route Forwarding-Lite (VRF-Lite), Management Information Base (MIB), Link Fragmentation and Interleaving (LFI), Stateful switchover (SSO), Low-latency queuing (LLQ), Class of Service (CoS), Call Admission Control (CAC), DiffServ Code Point (DSCP) support

Helpful Notes:
- The Cisco ONE ISR 1921 Router is a reliable and secure option for small to medium-sized businesses.
- Its advanced features, such as MPLS and DMVPN support, make it a versatile choice for network administrators.
- With its firewall protection and various authentication methods, the Cisco ONE ISR 1921 Router ensures the safety and privacy of your network.