Cisco CISCO2951-DC/K9 | 2951 3 x 10/100Base-TX RJ-45 + 1 x SFP mini-GBIC 2U Rack-mountable Integrated Services Router

Here are 12 technical specifications for the Cisco 2951 Integrated Service Router:

1. Network / Transport Protocol: IPSec, L2TPv3, PPPoE, DHCP, DNS, DDNS, DHCPv6, ICMPv6, IPv6, NAT, NTP, OSPFv2, OSPFv3, PIM-SM, PIM-SSM, RIP-1, RIP-2, RSVP, SCTP, SIP, SNMP 3, SNMP 2c, SSH, SSL, TFTP, GRE
2. Data Link Protocol: Ethernet, Fast Ethernet, Gigabit Ethernet
3. Routing Protocol: BGP, DVMRP, EIGRP, IGMPv3, IS-IS, OSPF, PIM-SM, PIM-SSM, RIP-1, RIP-2, static IPv4 routing, static IPv6 routing
4. Capacity: IPSec VPN tunnels: 1500, SSL VPN peers: 2, Concurrent sessions: 500000
5. Network Services: Application Visibility and Control (AVC), Cisco Unified Communications Manager Express (CME), Cisco Unified Survivable Remote Site Telephony (SRST), Cisco IOS Firewall, Cisco IOS Zone-Based Firewall, Cisco IOS IPS, Cisco IOS Content Filtering, NAT, QoS, DHCP server, DNS proxy, DHCP relay, Dynamic Host Configuration Protocol (DHCP) client, DHCP server, DHCP relay agent, IPv6 first-hop security, IPv6 VPN, IPv6 Rapid Deployment, IPv6 Ready Logo Phase 2, IPv6 Host, IPv6 ACL, IPv6 Multicast, IPv6 Routing, IPv6 MIB, IPv6 PIM, OSPFv3, IS-ISv6, BGP4+, IPv4-to-IPv6 Multicast, Secure Shell (SSH) Protocol, Secure Sockets Layer (SSL) Protocol, Web-based Security, Flexible Packet Matching (FPM), Management Information Base (MIB), RADIUS, TACACS+, Simple Network Management Protocol (SNMP), syslog, Network Time Protocol (NTP), NetFlow
6. Flash Memory: 256 MB (installed) / 8 GB (max)
7. RAM: 512 MB (installed) / 2 GB (max)
8. Interfaces: 3 x 10Base-T/100Base-TX/1000Base-T - RJ-45, 1 x console - RJ-45, 1 x auxiliary - RJ-45, 1 x SFP (mini-GBIC)
9. Power Device: Internal power supply
10. Voltage Required: AC 120/230 V (50/60 Hz)
11. Dimensions (WxDxH): 43.8 cm x 43.8 cm x 5.6 cm
12. Weight: 13.49 kg

Helpful Notes:
1. The Cisco 2951 is a powerful and versatile router that can handle a wide range of networking tasks.
2. Its extensive list of supported protocols and services makes it ideal for large enterprise networks.
3. With its high-capacity VPN tunnels and SSL VPN peers, the Cisco 2951 is also a great choice for secure remote access.