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PRODUCT SPECIFICATIONS
Tables 3–8 list software and hardware features of Cisco 870 Series routers.
Table 3. Cisco IOS Software Features on Cisco 870 Series Routers---Advanced Security Feature Set (Default)
Feature Description
Routing Protocols and General Router Features
• Routing Information Protocol (RIPv1 and RIPv2)
• Layer 2 Tunneling Protocol (L2TP)
• Cisco Express Forwarding (CEF) Port Address Translation (PAT)
• RFC 1483/2684
• Point-to-Point Protocol over ATM (PPoA) (DSL models only)
• PPP over Ethernet (PPPoE)
• 802.1d Spanning Tree Protocol (STP)
• Dynamic Host Control Protocol (DHCP) server/relay/client
• Access control lists (ACLs)
• Generic routing encapsulation (GRE)
Number of Users Supported
20
IPv6 Features
• IPv6 addressing architecture
• IPv6 name resolution
• IPv6 statistics
• IPv6 translation-transport packets between IPv6-only and IPv4-only endpoints
• ICMPv6
• IPv6 DHCP
DSL and ATM Features (DSL Models Only)
• ATM Variable Bit Rate/real-time (VBR-rt)
• ATM Unspecified Bit Rate (UBR), Constant Bit Rate (CBR), and Variable Bit Rate/non-
real-time (VBR-nrt)
• ATM Operation, Administration, and Maintenance (OAM) Support for F5 Continuity
Check; segment and end-to-end loopback; and Interim Local Management Interface
(ILMI) support
• 10 virtual circuits
Security Features
• Stateful Inspection Firewall
• Bridging firewall (Cisco 871 only)
• NAT transparency
• Firewall support for skinny clients
• Hardware-accelerated 3DES for IPSec
• Hardware-accelerated AES for IPSec
• Cisco Easy VPN Client and Server
• IPSec 3DES termination/initiation
• IPSec passthrough
• Point-to-Point Tunneling Protocol (PPTP) passthrough
• L2TP passthrough
• 802.1X
• Secure HTTP (HTTPS), FTP, and Telnet authentication proxies
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