| Kryptering | DES, 192-bit AES, 128-bit AES, SSL, PKI, 256-bit AES, Trippel DES |
| Transportprotokoll | IPSec, RTP, ICMP/IP, DHCP, L2TPv3, RSVP, DDNS, DNS, L2TP, FTP |
| Rutingprotokoll | GRE, Regelbasert ruting (PBR), RIP-2, HSRP, BGP, VRRP, EIGRP, WCCP, OSPF, BGP-4+, Bidirectional Forwarding Detection (BFD), RIP-1, NHRP, OSPFv3 |
The Cisco C891F-K9 Ethernet Integrated Services Router combines internet access and comprehensive security in a single high-performance business router that is easy to deploy and manage. This router is well suited for deployment as Customer Premises Equipment (CPE) in enterprise small branch offices and in service provider managed-service environments.